Thread Size: Dellorto jets in mopeds come in three thread sizes 4, 5, and 6 millimeter. Each thread size has maybe a hundred different jet sizes. They all fit and look the same but have different size pin holes. 

Jet Number: Jets have a number stamped on them indicating the hole size. The number can have different meanings for different jet makers.

For generic Dellorto jets the jet number is the mm size.
A generic Dellorto 60 is 0.600 mm.

For genuine Dellorto jets the jet number is less than the mm.
A genuine Dellorto 60 is 0.627 mm.

So a genuine 60 is in-between a generic 62 and 63.
This sounds wrong but is true!

 

 

How this was determined: Here is a graph of 17 genuine Dellorto 5mm jets actual sizes. The direct measurement was done with a set of machinists wire gauges, in increments of 0.001″. You can see how the measured sizes fall nicely on two lines. The line for over-56 has less slope than the line for under-56. You can also see what drill sizes correspond to what jet sizes. This study was done in 2002 before there were generic jets. It was surprising to learn that the stamped number did not mean the millimeter size.

 

Genuine 6413 (6 mm) Jets (M6-0.75 thread)
genuine       closest generic
##  inch size mm   ##     price    applications
51 0.0215″=0.550  55  $4.00 generic 55 (= Dellorto 51)
52 0.0219″=0.556  56  $6.00 A55 smaller for high altitude
54 0.0228″=0.580  58  $4.00 generic 58 (= Dellorto 54)
55 0.0231″=0.587  59  $8.00 Tomos A55 243160 original
56 0.0236″=0.600  60  $4.00 generic 60 (= Dellorto 56)
58 0.0242″=0.615  61  $5.00 generic 61 (= Dellorto 58)
59 0.0244″=0.620  62  none   generic 62 (= Dellorto 59)
60 0.0247″=0.627  63  $5.00 generic 63 (= Dellorto 60)

Genuine 1486 (5 mm) Jets (M5-0.75 thread)
genuine       closest generic
##  inch size mm   ##    price    applications
42 0.0178″=0.451  45   $5.00
43 0.0182″=0.462  46   none   pre-78 Ciao & Bravo
00 0.0181″=0.460  46   $5.00 generic 46 = Dellorto 43
44 0.0186″=0.472  47   $5.00
45 0.0190″=0.483  48   none   78-on Ciao & Bravo
46 0.0194″=0.493  49   $5.00
47 0.0198″=0.503  50   $7.00
48 0.0202″=0.513  51   $5.00 most 20mph mopeds
49 0.0207″=0.525  52   $7.00 78-83 Vespa Grande
50 0.0210″=0.533  53   $5.00 76-80 Garelli (some)
51 0.0215″=0.546  55   $7.00 85-91 Tomos A3
52 0.0219″=0.556  56   $5.00 almost all 30mph mopeds
53 0.0223″=0.566  57   $7.00 92-06 Tomos A35
54 0.0227″=0.577  58   $5.00 86-90 Derbi (flat reed)
54 0.0228″=0.580  58   $3.50 generic jet, no INC logo
55 0.0231″=0.587  59   none  
56 0.0235″=0.597  60   $5.00
57 0.0239″=0.607  61   $7.00
58 0.0242″=0.615  62   $5.00
60 0.0247″=0.627  63   $5.00
62 0.0252″=0.640  64   $3.50 generic jet, no INC logo
62 0.0255″=0.648  65   none  
64 0.0260″=0.660  66   $3.50 generic jet, no INC logo
64 0.0262″=0.665  66   none  
66 0.0268″=0.680  68   $3.50 generic jet, no INC logo
66 0.0268″=0.681  68   none  
68 0.0275″=0.700  70   $3.50 generic jet, no INC logo
68 0.0274″=0.696  70   none  
70 0.0280″=0.711  71   none  

Genuine 11600 (4 mm) Jets (M4-0.70 thread)
genuine       closest generic
##  inch size mm   ##   price    applications
25 0.0107″=0.272  27  $8.00  Tomos A55 pilot jet
29 0.0124″=0.314  31  $8.00
30 0.0128″=0.325  33  $8.00  good for A55 pilot jet
32 0.0140″=0.355  35  $8.00  same as #80 drill
35 0.0149″=0.378  38  N/A
40 0.0170″=0.431  43  $8.00
42 0.0178″=0.451  45  N/A
44 0.0187″=0.475  47  N/A
45 0.0190″=0.483  48  $8.00
48 0.0202″=0.513  51  $8.00  Sachs 504/1A and 505/1A
50 0.0210″=0.533  53  N/A
55 0.0230″=0.580  58  $8.00
60 0.0250″=0.635  63  $8.00

 

Clone Carbs: Some Dellorto SHA clone carburetors have a different jet thread, M5-0.8. But the Runtong (China) SHA clone has the same thread M6-0.75.

 

The Dellorto SHA 10.xx 12.xx 13.xx carburetor family is like the SHA 14.xx 15.xx family, but more compact. They have a smaller air filter flange, 50mm instead of 58. This style of carburetor was original on all Vespa/Piaggio mopeds 1970’s, 1980’s, 1990’s, and 2000’s. In the USA it was on 1972-86 Vespa mopeds, 1983-86 Garelli VIP-N, and mid 1990’s Kinetic TFR mopeds. 

Improved choke: These carburetors have an improved choke release trigger, that cures the sticking trigger lever problem that the 14.xx 15.xx SHA has. Vespa types have a sliding push rod, that moves up a ramp in the throttle slide when the throttle is raised fully. The solid rod pushes the choke lever/plate over a little stop tab. The torsion spring is then free to snap it back off. The top is relatively easy to put on, with only the throttle slide and spring to install, no choke device that gets damaged easy.

 

---

Vespa (Piaggio) Carburetors

On 1972-79 Vespa mopeds (US models) there were 3 carb bodies, 7, 10, and 12mm, 5 jet sizes, 39, 41, 43, 45, 49, and 2 air filter boxes, 3-hole and 6-hole. The Boxer had a side-pull carb top assy, like Peugeot. It gives more frame clearance. After 1979 the Boxer became the Si. There were 4 choke levers, Grande, Bravo, Ciao, Boxer. The later Boxer 2 had the linkage type choke with pull wire.

 

On 1980-83+ Vespa mopeds (US models) there are 3 carb bodies, 7, 10, and 12mm, 4 jets, 39, 42, 45, 49. The Ciao P and Bravo P had top pull, and Si had a side-pull carb top assy. There are 3 choke levers, Bravo-Ciao, and Si, linkage type, and Grande. There are 2 air filter boxes, 3-hole and 6-hole. Some are newer designs.

 

’78-83 Dellorto SHA 12.7 has a lever choke (4 types),
18 mm clamp, 16 sleeve, jet 39
’00-  Original on 00    part#   jet# .
’78-80 Ciao 20, 00     114338  39
’78-80 Bravo 20, 25   141902  39
’78-83 Grande 20  00 307174  39
’80-83 Ciao PX 20 00 177647  39
’79-83 Si 20  00 xxxx 191230  39

’72-83 Dellorto SHA 12.10 has a lever choke (4 types)
18 mm clamp, 16 sleeve, jet 41, 42, 43, 45 or 49.
’00-   Original on 00    part#   jet# .
’72-77 Ciao 25   , 00   113344  43
’77-77 Bravo 25, 00    131258  43 short choke lever
’78-80 Ciao 25, 30      182378  45
’78-80 Bravo 30 , 00   157180  45 short choke lever
’80-83 Ciao PX 25, 00 188327  42
’80-83 Ciao PX 30, 00 157501  49
’79-83 Si 25  00  xxxx 191863  41
’79-83 Si 30  00  xxxx 168549  43

’60-90 Dellorto SHA 12.12 has a lever choke,
18 mm clamp, 16 sleeve, jet 49.
’00-  Original on 00    part#   jet# .
’78-83 Grande 25, 30 353881  49

 

---

Replacement Carburetors

Dellorto SHA 12.10 has a pull-wire choke,
18 mm clamp, 16 sleeve, jet 42  $70.0 .
transfer the choke lever from the old carb

 

Dellorto SHA 12.12 has a pull-wire choke,
18 mm clamp, 16 sleeve, jet 51  $73.0 .
transfer the choke lever from the old carb

 

 

---

Carburetor Parts

Prices in green are for new, dark green are for used items.

#  Piaggio# price    description            remarks
00 000000 $48.0 SHA 12/12 bare body  Grande 25 & 30mph
00 000000 $40.0 SHA 12/10 bare body  Ciao, Bravo, Si 25 & 30mph
00 000000 $38.0 SHA 12/7   bare body  Ciao, Bravo, Grande, Si 20mph
01 098128 $5.00 adjuster A13 with nut M6-0.75
02 120074 $3.00 lock nut M5-0.75           special thread
03 113903 $6.00 cable pipe 2ar replica
04 120073 $3.00 lock nut M6-0.75
05 113906 $2.00 top screw M4-0.75 x 14 flat
06 113902 $12.0 carb top top-pull type, there’s no carb top gasket
07 113901 $10.0 spring throttle Ø11 x 26
08 135734 $15.0 throttle slide 21x26x3  has a ramp to release choke 
09 124753 $3.00 rubber washer 2x7x1.5 slips into a pocket from the side
10 124598 N/A     slide rod Ø2 x 35          like Peugeot (28mm) but bigger
11 124597 N/A     rocker arm Ø5 hole
12 092403 N/A     step bolt Ø5 x 2 step, M4-0.75 x 10 shank
13 016320 $0.50 thin washer M5
14 014404 $0.50 lock washer M4
15 012012 N/A     nut M4-0.75              not a regular M4-0.70
16 124752 N/A     screw M4-0.75×10 sunk  can be a flat head
17 098130 $3.00 spring Ø5 x 7 x 12 
18 098128 $6.00 cable adjuster M5-0.75
19 124596 N/A     carb top side-pull type #1 to 19 is “carb top” assy
21 133921 $6.00 choke lever Ciao            21 to 49 is “bottom” assy
22 353882 $15.0 choke lever Grande
23 140342 $17.0 choke lever Bravo     very long
24 113917 $6.00 inlet bolt M5-0.75 x 18  can not be normal M5-0.80
25 082920 $2.00 seal washer 5 x 8           can not be normal 5 x 10
26 113914 $7.00 banjo fuel inlet
27 113916 $6.00 fuel filter  Ø11 x 8
28 113915 $8.00 seal washer 11 x 16
29 114482 $17.0 intake sleeve 16 x 18 smaller than 20mm, regular SHA
29 222222 $2.00 rubber washer 12x18x2 not for 70’s Vespa moped
30 113926 $5.00 bolt M6-1.0 x 20             special small head
31 113927 $0.80 thin nut M6-1.0
32 113923 $4.00 spring for choke plate  torsion spring
33 113922 $4.00 pivot bolt choke            shoulder bolt
34 098135 $2.00 spring for idle screw
35 113919 $4.00 idle screw M4-0.70
36 164149 N/A     choke pull rod            Bravo P, Si
37 188772 N/A     choke pull rod            Ciao P
38 186413 N/A     coupling pipe (clip)  Si, Ciao P, Bravo P
39 212930 N/A     bracket                        Bravo P
40 188164 N/A     bracket                        Ciao P
41 164147 N/A     choke plate long flat    Si
42 188162 N/A     choke plate short bent Ciao P, Bravo P
43 120519 N/A     jet 39  20mph ’78-on Ciao, Bravo, Grande, Si, Ciao P
43 135233 N/A     jet 41  25mph ’80-83 Si, 30kph ’84-86 Bravo P
43 191125 $5.00 jet 42  25mph ’80-86 Ciao P
43 113912 none   jet 43 ’80-86 Si, ’68-77 Ciao, ’72-77 Bravo (all 30)
43 010101 $5.00 jet 44
43 130525 none   jet 45 ’78-83 Ciao (25, 30), Bravo (30)
43 010101 $5.00 jet 46
43 158780 $7.00 jet 49  30, 25mph ’78-85 Grande,
43 158780 $0.00 jet 49  30mph ’84-86 Ciao P, Bravo P, Si
43 010101 $5.00 jet 50
44 090506 $10.0 float needle L=17.0 photo
45 113910 $15.0 float all plastic says 2.5 grams 7420.1
46 113909 $2.00 gasket float bowl
47 085291 $2.00 hinge pin Ø2.0 x 16.5
48 113908 $12.0 float bowl metal
49 098134 $4.00 bowl screw M4-0.75 x 18
50 131009 $5.00 air filter screen
51 113055 $9.00 clamp air filter w/screw
53 113347 $25.0 air filter 3-hole open     68-80 Ciao,Bravo(20,25,27)
54 306922 $24.0 air filter 6-hole covered 78-86 Grande (20, 25, 30)
55 183423 $32.0 air filter 6-hole open     81-86 Ciao PX (30mph)
56 186886 N/A     air filter 3-hole open     80-86 Si, Ciao PX (20, 25)
57 000000 N/A     air filter 3-hole covered 95-99+ Kinetic TFR
00 052540 $13.0  gasket set 52540.77

 
A. Dellorto SHA 10-12-13 gasket set 52540.77
B. Vespa air filters: L 3-hole, R 6-hole. Row 1 covered: L Kinetic, R Grande. Row 2 open: L Ciao, R Ciao P
C. Vespa air filters: 1. Ciao 3-hole, width 98mm. 2. Ciao PX 6-hole, width 96mm. 3. Kinetic 3-hole, width 90mm. Ciao ones are too wide to fit Kinetic.

 

 

 

 

 

 

---

1954-56 

 

Identification: The P48 has horizontal lines on the side covers. The P3 has no lines. The P48 has a large oil plug in the middle. The P3 has a small check plug just below the name plate.

1954-56 FBM P48 Pettiroso
47.7cc (38 x 42mm) 2-speed cable-shift with pedals
40km/h, ?? carburetor (9? mm)
case mounts: 2 rear and one top
piston 38.0 x 12-22.0-?? M16
rings 38.0 x 2.5 GN

1955-56 FBM P3
47.7cc (38 x 42mm) 3-speed cable-shift kick start
40km/h, Dellorto T4 9 S1 carburetor (9mm)
case mounts: 2 rear and 1 front,
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

 

 

 

 

 

 

 

 

---

 1957-59

 

First engines by Franco Morini in 1956-57 were mostly the same as 1954-56 Moto FBM. They have very rounded head fins. The differences are: 1) the 3M head has longer fins, 2) 3M has a motor mount, 2) the 3M case has no front mount. 

First hourglass logo was on the these 1958 engine covers. 

2-speed

1957-59? Morini 2M-48 (almost same as FBM P48)
47.7cc (38 x 42mm) 2-speed manual-clutch cable-shift with pedals
40km/h, Dellorto T4 9 S1 carburetor (9mm)
case mounts: 2 rear and 1 top
piston 38.0 x 12-22.0-??? M16
rings 38.0 x 2.5 GN

3-speed

1957-59? Morini 3M-48 (almost same as FBM P3)
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift kick-start
40km/h, Dellorto T4 9 S1 carburetor (9mm)
case mounts: 2 rear, and 1 head mount
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1958 Morini 48 Catalog (scaled) from www.motomanuali.i
Full scale version: 1958 2M-48 3M-48 Parts Catalog

 
2M and 3M cases and covers are different

1960-62? Morini 75
??cc (?? x 42mm) 3-speed foot shift
Dellorto ME16BS carburetor

 

 

 

 

 

 

 

 

 

---

 1960-61

 

2-speed

1960-62? Morini 2M/R
47.7cc (38 x 42mm) 2-speed manual-clutch cable-shift with pedals
1.3 hp, 40km/h, 5.8 cr, Dellorto T4 9 S1 carb (9 mm) 54 jet,
sprockets 14 x 27T

1960-62? Morini 2B/R
47.7cc (38 x 42mm) 2-speed manual-clutch cable-shift with pedals
case mounts: 2 rear and 1 top

1960-62? Morini F48 
47.7cc (38 x 42mm) 2-speed manual-clutch with pedals
40km/h, Dellorto T4 9 S1 carburetor (9mm), jet 52

1960 Morini F48 two-speed

3-speed

1960-62? Morini 3M/R
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift kick-start
1.3 hp, 40km/h, 5.8 cr, Dellorto T4 9 S1 carb (9 mm) 54 jet,
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN, sprockets 13 x 30T

1960-62? Morini 3B/R
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift kick-start?
40km/h, Dellorto T4 9 S1 carburetor (9mm)
case mounts: 2 rear, and 1 head mount

1960-62? Morini 3M Export
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift kick-start
1.8 hp, 50km/h, 6.3 cr, Dellorto T4 12 S1 carb (12 mm) 54 jet,
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN, sprockets 13 x 28T

1960 Motori 48 Series Parts Catalog (incomplete)

 

 

 

 

 

 

 

 

 

Morini 3M Series 1960’s

 

 

 

 

---

 1962-63

 

New 50cc bore and stroke: From 1962 to 1978 Franco Morini increased the cylinder bore from 38.0 to 39.0 mm, and decreased the stroke from 42.0 to 41.5 mm. This increased the displacement from 47.7 to 49.6 cc. First was the 3CV in 1962. Then the 3M and 4M series changed in 1969. Then the S5 series changed in 1978. By the 1980’s all 50cc Morini engines had a 39.0 bore.

2-speed

1962-64? Morini 2M/O Omologato (Homologated)
47.7cc (38 x 42mm) 2-speed manual-clutch cable-shift with pedals

3-speed

1962-64? Morini 3M
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift with pedals
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1962-64? Morini 3M/S Sport
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift with pedals
?? hp, ?? km/h, Dellorto UA16S, Dansi ASL11 magneto ∅110, ext spark
new head with larger fins

1962-64? Morini 3M/K
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift kick start
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb (12mm)
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1962-64? Morini 3M/V
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift kick-start
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb (12mm)
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1962-64? Morini 3CV
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift with pedals
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb (12mm)
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1962 Motori 48 Parts Catalog (scaled) from www.motomanuali.it
Full scale version: 1962 Motori 48 Parts Catalog on motomanuali.it.

1963? Morini 3CV 3M/S 3M/SS Instruction Booklet (incomplete)

 

 

 

---

 1964-65

 

2M is retired: In 1964 the 2-speed 2M engine was discontinued in favor of the 3-speed 3M.

1-speed

1964-66? Morini F4 
47.7cc (38 x 42mm) 1-speed automatic with pedals
1.3 hp, 40 km/h, 5.8 comp ratio, Dellorto T4 12 S1 carburetor
see Morini F4 Owners Manual at motomanuali.it .
new head with longer fins

 

1965-68? Morini F5 
49.6cc (39.0 x 41.5) 1-speed auto. pedal-start, no pedals
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb, Dansi MDL111 magneto

 

 

 

 

 

 

 

 

3-speed

New horizontal lines: 1964-68 3M and 4M engines had rounded engine cases with horizontal lines across the middle of the side covers. Before 1964 only 2M engines had lines. This is useful in identification.

1964-66? Morini 3M Omologato
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift with pedals
1.4 hp, 40 km/h, Dellorto SHA 14/9 carb (9mm)
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1964-66? Morini 3M Export
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift with pedals
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb (12mm)
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1964-65? Morini 3M/S
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift with pedals
?? hp, ?? km/h, Dellorto ME16-BS (16mm)

1964-65? Morini 3M/K
47.7cc (38 x 42mm) 3-speed manual-clutch cable-shift kick start
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb (12mm)
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1964-65? Morini 3MV Ventilated (fan cooled)
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift with pedals
2.2? hp, 50 km/h, SHA 14/12 carb Dansi MSL111V2 or ASL123V
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1964-65? Morini 3CV  Ventilated (fan cooled)
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift kick-start
?? hp, ?? km/h, Dellorto ME16BS (16mm)
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

   
1964 Morini 3M Parts Catalog (incomplete)

 

 

 

 

 

 

 

1965 Morini 3MV Parts Catalog (early part#’s)

 

 

 

4-speed

1964-66? Morini 4MP
47.7cc (38.0 x 42.0) 4-speed manual-clutch foot-shift kick-start
Omologati 1.3 hp @4400, 40 km/h
Export xx  2.0 hp @6500, 60 km/h
Dansi magneto, Dellorto SHA 14/12 carb
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

 

1964? Morini 4M Series Instruction Booklet
Full scale version see motofox.it .

 

 

 

 

 

---

 1966-68

 

1-speed

1966-69? Morini SA
47.7cc (38.0 x 42.0) 1-speed automatic with pedals
?? hp, ?? km/h, Dellorto SHA 14/12 carb,
Dansi MSL111 magneto
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027

 
1967? Morini SA Parts Catalog (late part#’s)

 

1966-70? Morini S5  1-speed automatic
47.7cc (38.0 x 42.0), 6.5 comp. ratio, pedal start
2.2hp 50kph or 1.4hp 40kph, SHA 14/12 or 14/9 carb
Dansi MDL111 magneto
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027

 

3-speed

1966-72? Morini 3M
47.7cc (38.0 x 42.0) 3-speed manual-clutch cable-shift with pedals
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb, Dansi MSL111 magneto
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1966-72? Morini 3M/K
47.7cc (38.0 x 42.0) 3-speed manual-clutch cable-shift kick-start
2.2? hp, 50 km/h, Dellorto SHA 14/12 carb, Dansi MSL111 magneto
piston 38.0 x 12-22.0-16.5 M3A14 23-0101 G0027
rings 38.0 x 2.5 GN

1966-72? Morini 3M/S
47.7cc (38.0 x 42.0) 3-speed manual-clutch cable-shift with pedals

1966 Morini 3M Series Parts Catalog (early part #’s, incomplete)

1967? Morini 3M, 3M/K Parts Catalog (late part #’s)

 

 

 

 

 

 

 

 

 

1966-68? Morini 3MV  Ventilated (fan cooled)
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift with pedals
?? hp, ?? km/h, Dellorto ME16BS ?
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1966-68? Morini 3MV/K  Ventilated (fan cooled)
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift kick start
?? hp, ?? km/h, Dellorto ME16BS ?
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1966-68? Morini 3CV  Ventilated (fan cooled)
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift kick-start
?? hp, ?? km/h, Dellorto ME16BS ?
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1966-68? Morini 3CV/s  Ventilated (fan cooled)
49.6cc (39.0 x 41.5) 3-speed manual-clutch cable-shift kick-start
?? hp, ?? km/h, Dellorto UA19S carb
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1966 Morini 3MV Series Parts Catalog (incomplete)

 

 

 

 

 

 

 

 

4-speed

1966-68 Morini 4MP
49.9cc (39.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
Omologati 1.3 hp @4400, 40 km/h, SHA 14/12 carb, jet 56
Export xx  2.0 hp @6500, 60 km/h, SHA 14/12 carb,  jet 58
Dansi MSL111 magneto
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1966-68 Morini 4MP/S Turbo
49.9cc (39.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
?? hp @8500, ?? cr. Dellorto UA19S carb, jet 92
Dansi ASL111 magneto
piston 39.0 x 12-22.0-16.5? 4MPA14 23-0107 G0026A
rings 39.0 x 2L and 39.0 x 1.5 GN

1966-68 Morini 4MP/V
49.9cc (39.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
Omologati 1.3 hp @4400, 40 km/h, SHA 14/12 carb, jet 56
Export xx  2.0 hp @6500, 60 km/h, SHA 14/12 carb,  jet 58
Dansi ASL123V magneto with fan
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1966-68 Morini 4MP/SV
49.9cc (39.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
?? hp @7500, ?? cr. Dellorto ME16BS carb, jet 64
Dansi ASL123V magneto with fan
piston 39.0 x 12-22.0-16.5? 4MPA14 23-0107 G0026A
rings 39.0 x 2L and 39.0 x 1.5 GN 

1966 Morini 4MP Series Parts Catalog (early part #’s)
Full scale catalog from cjoint.com via mondo50cc.forumfree.it.

 
1968? Morini 4MP/S Parts Catalog (late part #’s)
Full scale catalog from mondo50cc.forumfree.it.

 

1968-71? Morini 4MP
49.9cc (39.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
Omologati 1.3 hp @4400, 40 km/h, SHA 14/12 carb, jet 56
Export xx  2.0 hp @6500, 60 km/h, SHA 14/12 carb,  jet 58
Dansi MSL111 magneto
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1968-71? Morini 4MP/S Turbo
49.9cc (39.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
6 hp @8500, 9.0 cr. Dellorto UA19S carb, jet 92
Dansi ASL111 magneto
piston 39.0 x 12-22.0-16.5? 4MPA14 23-0107 G0026A
rings 39.0 x 2L and 39.0 x 1.5 GN

1968-71? Morini 4MP/V
49.9cc (39.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
Omologati 1.3 hp @4400, 40 km/h, SHA 14/12 carb, jet 56
Export xx  2.0 hp @6500, 60 km/h, SHA 14/12 carb,  jet 58
Dansi ASL123V magneto with fan
piston 39.0 x 12-22.0-16.5 3CVA14 00-0000 G0027
rings 39.0 x 2.5 GN

1968-71? Morini 4MP/SV
49.9cc (38.0 x 41.8) 4-speed manual-clutch foot-shift kick-start
4 hp @7500, 8.5 cr. Dellorto ME16BS carb, jet 64
Dansi ASL123V magneto with fan
piston 39.0 x 12-22.0-16.5? 4MPA14 23-0107 G0026A
rings 39.0 x 2L and 39.0 x 1.5 GN

 

 

 

 

Contents:
1. Explanations
2. Rings for Sale

 

---

1. Explanations

Two-Stroke Piston Ring Types C, T, L

type C = Common “square”  shape (cross-section)
Listed as: D x h x w

 

type T = Trapezoidal “slant top” shape (cross-section)
Listed as: D x h1/h2 x w

 

type L = L-shape  aka  “Dykes”  shape (cross-section)
Listed as: D x h1/h2 x w1/w2

 

Two-Stroke Ring Gap Types N, I

gap N = GN Grano Normale gap style is for ring pin on side of ring groove
gap  I  = GI  Grano Interno = gap style is for ring pin in center of ring groove
gap (blank) is for L-ring gap style, ring is like a GI but groove is like a GN

 

 

 

 

 

 

 

---

2. Rings for Sale

 

price is for each ring, unless noted.  All rings are for 50cc engines, unless noted.

size x height x width 00 type gap price    under 38 mm

36.50 x 1.50 /.0 x 0.1/0.1 C  N  $10.0
222812 Tomos MC36 36cc

 

size x height x width 00 type gap price    38 to 38.9 mm

38.00 x 1.50 /.0 x 0.1/0.1 C   I  $10.0
0215.100.100 Sachs 1979-on 504,505 1C,1D upper
Zanetti (front engine)

38.00 x 1.5/1.3 x 1.60 /7  T  N  $17.0
223707 Tomos A55 (2001-06) superseded in ’07 to 236802

38.00 x 1.50 /.0 x 0.1/0.1 C  N  $9.00
236802 Tomos A35 (1991-06), Tomos A55 (2007-on)
000.672.5110 Derbi 1976-1986 lower only, Odyssey, Solo

38.00 x 2.0/1.0 x 1.5/0.4  L  N  $10.0
000.802.5110 Derbi 1976-1986 upper (fits Puch loose inner)

38.00 x 2.0/1.0 x 1.6/0.6  L  N  none
328.110.9601 Puch 1979-1980 deluxe models upper

38.00 x 2.00 /.0 x 0.1/0.1 C  N  $13.0
331.110.1601 Puch rounded edge for aluminum cylinder

38.00 x 2.00 /.0 x 0.1/0.1 C  N  $9.00
320.110.0601 Puch except some ’79-80 upper
0215.009.000 Sachs 504, 505 1A,1B both, 1C,1D lower
044754 Tomos A3 1975-1990, AMF BHE900 rear engine
26.1001 Morini S5K, S5K2, 2M, 3M, F48

38.00 x 2.00 /.0 x 0.1/0.1 C  I none
1970-71 Jawa 50 3-speed on Indian Boy Racer

38.00 x 2.50 x 1.50.7/0.7  C  N  $11.0
71.0802.0 4600 Minarelli V1 1hp 20mph, Sears Allstate, early Puch

38.00 x 2.50 /.0 x 0.1/0.1 C flat  none
Solex 45cc 1946-1954  use 38.00 x 2.50 C N

38.20 x 1.50 /.0 x 0.1/0.1  C  N  $10.0
182518 Piaggio 79-later & some 78s lower ring

38.20 x 2.00 /.0 x 0.1/0.1  C  N  $16.0
166945 Piaggio 78-80 USA-type, must file down a 077775
26.1002 1os Morini S5K, S5K2, 2M, 3M, F48

38.20 x 2.0/1.0 x 1.8/.75  L  N  $14.0
182519 Piaggio 79-later & some 78s upper ring

38.20 x 2.50 x 1.50.7/0.7  C  N   none 
71.0852.7 4610 Minarelli 1os V1 1hp 20mph, Sears Allstate, early Puch

38.205x1.9/1.0 x 1.5/0.4  L  N  $8.00
000.802.5110 1os Derbi 1976-1986 upper ring

38.205x2.0/1.0 x 1.9/0.5  L  N  $9.00
0
38.205x1.50 /.0 x 0.1/0.1 C  N  $15.0
000.672.2511 1os Derbi lower

38.25 x 1.50 /.0 x 0.1/0.1 C  N  $21.0
0 made from a filed 38.4 x 1.5

38.25 x 2.00 /.0 x 0.1/0.1 C  N  $16

38.40 x 1.50 /.0 x 0.1/0.1 C  N  $14.0
132515 std or 1os Piaggio lower ring, 79-later & some 78s

38.40 x 1.5/1.3 x 1.60 /7  T  N  none
3010010 Kinetic TFR (Vespa Si remake) 95-later

38.40 x 2.00 /.0 x 0.1/0.1 C  N  $10.0
077775 Piaggio 77-earlier & some 78s, early Kinetic

38.40 x 2.0/1.0 x 1.8/.75  L  N  none 
G.68473 std or 1os Piaggio upper ring, 79-later & some 78s

38.40 x 2.50 x 1.50.7/0.7  C  N  $9.00
71.0852.7 4620 Minarelli 2os V1 1hp 20mph, Sears Allstate, early Puch

38.50 x 1.50 /.0 x 0.1/0.1 C  N  $12.0
227758 1os Tomos A35

38.50 x 2.00 /.0 x 0.1/0.1 C  N  $10.0
044751 1os Tomos A3

38.60 x 1.50 /.0 x 0.1/0.1 C  N  $9.00
137693 1os or 2os Piaggio  

38.60 x 2.00 /.0 x 0.1/0.1 C  N  $14.0
98196 1os Sachs 504, 505, 2os Piaggio 79- lower

38.60 x 2.0/1.0 x 1.8/.75  L  N  $13.0
137690 1os or 2os Piaggio upper ring, 79-later & some 78s

38.70 x 1.50 /.0 x 0.1/0.1 C  N  $16.0
71.0803.0 4635 Minarelli V1 (US 1979-on and some ’78)

38.80 x 2.0/1.0 x 1.65/.6  L  N  $11.0
4.7470.5140 Demm Smily upper
68.0116.0 Minarelli P4 (export al-cyl, Compact System, Radiale) upper

38.80 x 2.0/1.0 x 1.8/.75  L  N  $11.0
137691 2os Piaggio upper ring

38.80 x 1.50 x 1.50.7/0.7  C  N  $10.0
71.0805.0 4640 Minarelli V1 (US to-1978)
68.0115.0 Minarelli P4 (export iron-cyl, Sport Quadro) both
68.0115.0 Minarelli P4 (export al-cyl, Compact System, Radiale) lower
137694 2os Piaggio upper ring

38.80 x 1.50 /.0 x 0.1/0.1 C   I   $11.0
22350-65 Aermacchi Harley Davidson M50 1965-66 stroke 42

38.80 x 2.00 /.0 x 0.1/0.1 C  N  $10.0
4.7470.5100 Demm Smily lower

 

size x height x width 00 type gap price    39 to 39.9 mm

39.00 x 1.00 1./x 1.7/0.7  C  N  $19.0
26.1056 Morini S5N, S5GS kids off road, both

39.00 x 1.2/1.0 x 1.70 /7  T   I    none
13011.GE2.305a Honda NS50 upper

39.00 x 1.20 x 1.85 /0..7  C   I   $10.
13011.GE2.305b Honda NS50 lower

39.00 x 1.50 1./x 1.7/0.7  C  N  $10.0
71.0855.7 4650 1os Minarelli  V1, P4, P4 (alum cyl) lower
26.1044 Morini S5T, S5E, S5ET kids off road, lower

39.00 x 1.50 1./x 1.7/0.7  C   I   $10.0
22351-65 1os Aermacchi Harley Davidson M50 1965-66

39.00 x 2.00 1./x 1.7/0.7  C   I   $12.0
22148 Motobecane (after 06-76) Morini S5R lower

39.00 x 2.00 1./x 1.7/0.7  C  N  $10.0
14821 Motobecane (before 07-76), DiBlasi mini-cycle

39.00 x 2.0/1.0 x 1.8/0.7  L  N  $19.0
26.1003 Morini S5R, S5T alum. cylinder (upper ring)

39.03 x 2.00 1./x 1.7/0.7  C   I   $12.
2812200 Jawa 207 1970-83 standard

39.20 x 1.50 1./x 1.7/0.7  C  N  $15.0
71.0855.7 4660 2os Minarelli V1, P4, P4 (al-cyl) lower

39.20 x 1.50 1./x 1.7/0.7  C   I   none
22352-65 2os Aermacchi Harley Davidson M50 1965-66

39.25 x 1.2/1.0 x 1.70 /7  T   I   $19.
13012.GE2.305a 1os Honda NS50 upper

39.25 x 1.20 x 1.85 /0..7  C   I   $10.
13012.GE2.305b 1os Honda NS50 lower

39.28 x 2.00 x 1.65 /0..7  C   I   $14.0
2812201 1os Jawa 207 1970-83

39.40 x 1.50 1./x 1.7/0.7  C  N   none 
71.0855.7 4670 3os Minarelli V1, P4, P4 (al-cyl) lower

39.40 x 1.50 1./x 1.7/0.7  C   I   none
22353-65 3os Aermacchi Harley Davidson M50 1965-66

39.40 x 2.50 1./x 1.7/0.7  C  N   $11.0
Rizzato Califfo 1978 (Rizzato 119 engine)

39.50 x 1.2/1.0 x 1.70 /7  T   I    none
13013.GE2.305a 2os Honda NS50 upper

39.50 x 1.20 x 1.85 /0..7  C   I   $10.
13013.GE2.305b 2os Honda NS50 lower

39.50 x 1.70 x 1.60 /0..7  C flat $10.0
60817 Solex rings (3) no locating pins

39.53 x 2.00 x 1.65 /0..7  C   I   $19.0
2812202 2os Jawa 207 1970-83

39.60 x 1.50 1./x 1.7/0.7  C  N  $17.0
71.0855.7 4680 4os Minarelli  V1, P4, P4 (al-cyl) lower

39.80 x 1.50 1./x 1.7/0.7  C  N  $17.0
71.0855.7 4690 5os Minarelli V1, P4, P4 (al-cyl) lower

39.80 x 2.50 1./x 1.7/0.7  C  N none
1os Rizzato Califfo 1978 (Rizzato 119 engine)

 

size x height x width 00 type gap price    40 to 40.9 mm

40.00 x 1.2/1.0 x 1.60 /7  T  N  $14.0
633086 China 49cc two-strokes upper, most

40.00 x 1.2/1.0 x 1.70 /7  T   I   $14
2W1.11610.0000a Yamaha YSR50 upper, PGO Star 50 upper, others

40.00 x 1.20 x 1.85 /0..7  C   I   $13
2W1.11610.0000b Yamaha YSR50 lower, PGO Star 50 lower, others

40.00 x 1.5/1.3 x 1.80 /7  T  N  $14.0
13011.147.005a Dailim Trac, upper for Honda NC50,PA50,Yamaha QT50

40.00 x 1.50 1./x 1.7/0.7  C  N  $10.0
480510 Batavus M48, M56, Trac (not Daelim), Flandria Bermuda
13011.147.005b Honda lower for NC50,PA50, Yamaha QT50 lower
G7347 Benelli G2, 1965-75 Ward Riverside, Benelli mini-cycles
26.1044 Morini S5R, S5T alum. cylinder (lower ring)

40.00 x 1.50 1./x 1.7/0.7  C   I   $10.0
551913 Morini MO Gyromat,Convert (early ’70s MO1,MO2)
0F0.250.0111 Derbi 1986-1989 flat reed, Kreidler Flory

40.00 x 2.00 1./x 1.7/0.7  C  N  $10.0
307.021.00 Garelli all 1970’s, 00’s Avanti/Mont (most)
Casal K177, 2000’s Hero Majestic Pacer

40.00 x 2.0/1.0 x 1.8/0.7  L  N   $10.0
310.001.00 Garelli Monza GT upper

40.00 x 2.50 1./x 1.7/0.7  C   I   $14.0
38315 Peugeot 102, 103 (almost all US models)

40.20 x 1.50 1./x 1.7/0.7  C  N  $22.0
G7347/2 1os Benelli, 1os M Ward, filed down 40.25

40.20 x 2.00 1./x 1.7/0.7  C  N  $15.0
308.027.00 1os Garelli

40.25 x 1.00 1./x 1.7/0.7  C  N  $12.0
633087 1os China 49cc two-stroke scooter

40.25 x 1.50 1./x 1.7/0.7  C  N  $14
480511 1os Batavus M48

40.25 x 1.5/1.3 x 1.80 /7  T  N   none
13021.147.005a 1os Honda NC50, PA50 upper

40.25 x 1.50 1./x 1.7/0.7  C  N  $15.
13021.147.005b 1os Honda NC50, PA50 lower
480511 1os Laura M48

40.30 x 1.50 1./x 1.7/0.7  C  N  $19.0
4641b Minarelli V1HL and V1L lower, filed down 40.5

40.30 x 2.0/1.0 x 1.8/0.7  L  N  none
4641a Minarelli V1L upper

40.40 x 1.50 1./x 1.7/0.7  C  N  none  
G7347/4 2os Benelli  G2, 2os M Ward and mini-cycles

40.40 x 1.50 1./x 1.7/0.7  C   I   $9.00
26.1045 Morini MO1, MO2, MO4, M1

40.40 x 2.00 1./x 1.7/0.7  C  N  $12.0
308.028.00 2os Garelli

40.50 x 1.5/1.3 x 1.80 /7  T  N  none
13031.147.005a 2os Honda NC50, PA50 upper

40.50 x 1.50 1./x 1.7/0.7  C  N  $11
13031.147.005b 2os Honda NC50, PA50 lower
480512 2os Batavus M48

40.50 x 2.50 1./x 1.7/0.7  C   I   $12.0
33648 1os Peugeot 102, 103 (some, but none in CA)

40.60 x 1.50 1./x 1.7/0.7  C  N  $10.0
G7347/6 3os Benelli, 3os M Ward
71.0860.7 4651b 1os Minarelli V1L lower

40.60 x 1.50 1./x 1.7/0.7  C   I  $12.0
26.1046/6 1os Morini MO1, MO2, MO4, M1

40.60 x 2.00 1./x 1.7/0.7  C  N  $10.0
308.029.00 3os Garelli

40.60 x 2.0/1.0 x 1.65/.6  L  N  $15.
71.0860.7 4651a 1os Minarelli V1L upper

40.75 x 1.5/1.3 x 1.80 /7  T  N   none
13041.147.005a 3os Honda NC50, PA50 upper

40.75 x 1.50 1./x 1.7/0.7  C  N   none
13041.147.005b 3os Honda NC50, PA50 lower

40.80 x 1.50 1./x 1.7/0.7  C   I   $12.0
26.1046/8 2os Morini MO1, MO2, MO4, M1

40.80 x 1.50 1./x 1.7/0.7  C  N  $9.0
71.0860.7 4661b 2os Minarelli V1L lower

40.80 x 2.0/1.0 x 1.65/.6  L  N   none
71.0860.7 4661a 2os Minarelli V1L upper

40.80 x 2.00 1./x 1.7/0.7  C  N   $10.0
308.030.00 4os Garelli 

 

size x height x width 00 type gap price    41 mm and over

41.00 x 1.2/1.0 x 1.90 /7  T   I   $14
13010.GJ5.015a Honda TG50, NN50 Gyro upper

41.00 x 1.2/1.0 x 1.90 /7  C   I   none
13010.GJ5.015b Honda TG50, NN50 Gyro lower

41.00 x 1.5/1.3 x 1.80 /7  T   I   $14.0
12140-16B10 Suzuki FY50, FZ50, FA50 upper

41.00 x 1.50 1./x 1.7/0.7  C  N   $10.0
Minarelli V1 Industriale 53cc stroke 42

41.40 x 1.50 1./x 1.7/0.7  C   I   $12.0
Unknown only one

42.00 x 1.50 1./x 1.7/0.7  C  N   none
Minarelli V1 Carrabela 58cc stroke 42

42.00 x 2.00 1./x 1.7/0.7  C  N   $10.0
Puch DS60

42.00 x 1.50 1./x 1.7/0.7  C flat $40/set
E660-00-50 Indian 4-stroke ring set comp(2) oil(1)

42.25 x 1.50 1./x 1.7/0.7  C flat $40/set
E660-10-50 1os Indian 4-stroke set comp(2) oil(1)

42.50 x 1.50 1./x 1.7/0.7  C flat  none
E660-20-50 2os Indian 4-stroke set comp(2) oil(1)

42.75 x 1.50 1./x 1.7/0.7  C  N  $12.0
big bore kit appr 60cc only two

43.00 x 1.50 1./x 1.7/0.7  C  N  $12.0
4635HP big bore kit appr 60cc only 3

43.00 x 2.0/1.0 x 1.65/.6  L   N  $16.0
big bore kit appr 60cc only one

43.50 x 1.50 1./x 1.7/0.7  C  N  $10.0
big bore kit appr 60cc

44.00 x 1.50 1./x 1.7/0.7  C  N  $10.0
G-591 Benelli Dynamo 65 59cc stroke 39
MF-554 big bore kit Peugeot 103 59cc
2
44.00 x 1.50 1./x 1.7/0.7  C   I    $11
22350-67 Aermacchi Harley Davidson M65 1967-72 64cc stroke 42

44.20 x 1.50 1./x 1.7/0.7  C   I    none
22351-67 1os Aermacchi Harley Davidson M65 1967-72 64.5

44.40 x 1.50 1./x 1.7/0.7  C   I    none
22352-67 2os Aermacchi Harley Davidson M65 1967-72 65cc

45.00 x 1.50 1./x 1.7/0.7  C  N  none
71.8187 Minarelli P4-70, P6-70 70cc

45.20 x 1.50 1./x 1.7/0.7  C  N  none
71.8187 1os Minarelli P4-70, P6-70 70cc

45.40 x 1.50 1./x 1.7/0.7  C  N  none
71.8187 2os Minarelli P4-70, P6-70 70cc  

 

 

---

Ring Information

 

Pinned or Not Pinned: Most moped piston rings are two-stroke style, where there are pins in the ring grooves of the piston that keep the rings from rotating around. Two stroke cylinders have holes or ports that the ring ends can snag on. So two stroke rings are pinned to the piston. Four stroke cylinders do not have any holes, so four stroke rings are not pinned. Knowing about those pins is important when installing.    

Getting the right rings: If your model is not in the applications, then you must measure the bore and the ring thickness. A calipers is the best tool to measure the bore (ring diameter) and ring thickness. Sometimes your rings might not be original, for many reasons. The piston might be aftermarket with thinner rings. The cylinder might be bored out to an oversize bore. Some mopeds came with more than one piston size or ring style.

Break a ring, how not to: Two stroke pistons have little pins (stumps, bumps) in the piston ring grooves that prevent the rings from rotating. Knowing where each ring locating pin is, and aligning the ring gap over the pin during cylinder installation, is the key to not breaking the ring. 

Measuring wear: A new piston ring is a the best tool to measure how worn a cylinder is. Conversely, a new cylinder is the best tool to measure how worn a ring is. To measure the wear of a ring, you need a perfectly round cylinder of a precisely known bore. A worn cylinder that has not been honed will still have it’s original new bore at the very top, above where the rings rub at. A new ring in a new cylinder should have a very small end gap of .004 to .008″. A worn but still OK cylinder with a new ring will have a gap of .0010 to .018″. A worn cylinder and ring both will have an end gap of over .020″(.5mm). A badly worn cylinder and/or ring will have a huge gap, over .030″(.75mm). You measure ring gap with a feeler gauge.

Classifying rings: Rings get mixed up and are difficult to tell the size, unless a perfectly round cylinder of an appropriate size is available to place the ring in. If you try to squeeze a piston ring into a circle with just fingers, it inevitably becomes a very rounded polygon, or at best an ellipse. So the measurement becomes inaccurate. At right is how Myrons Mopeds’s Jawa piston rings were classified, using a piece of aluminum tubing with a tight fitting piston inside it to hold the tube round, and the test ring square. From top to bottom, 39.03 x 2.0, 39.28 x 2.0, 39.53 x 2.0, 39.78 x 2.0mm. Each ring increases in diameter by 0.25mm, so the circumference increases by Pi times that, or about 0.8mm. Here the inside of an old fishing pole tube is 39.78mm, perfect for the 3rd oversize 39.78 ring, on the bottom, with a gap of almost zero. Each gap is 0.8mm more because each ring is 0.25mm less diameter. It is important that the piston and ring fit the cylinder properly.   

Filing down: To make a ring slightly smaller, one of the two ring ends can be filed down, while preserving the shape. To reduce the size (diameter) by 0.20 mm, the end must be filed down by pi times that, 0.63 mm. When a filed down ring is installed in a cylinder smaller than it was designed for, two things change. The tension is greater, and the shape is slightly non-circular. So filed rings need a longer break-in period, to wear down the higher places. With 38 to 41 mm rings, the size can be reduced by 0.2mm with about 30 minutes of break-in, and by 0.5mm with about 2 hours of break-in. After break-in the rings have a mirror polish all around.

Why is the width not specified? Because the inner side of the ring does not touch anything. The ring has spring tension pushing it outwards, keeping the bottom (inner) surface from touching the bottom of the ring groove. So the ring width can be any amount, from about half the groove depth, to the groove depth. The exact ring width is not important. Exact ring height and diameter are important. 

 

 

1. Sachs Engines

Welcome. “Fichtel & Sachs” was founded in 1895 by Ernst Sachs and Karl Fichtel, in Schweinfurt Germany. Ernst Sachs was a racing cyclist and technical wiz, while Karl Fichtel was a business manager. They made hubs and spindles for bicycles and lorries. Ernst Sachs designed and patented a new bicycle hub, the “coaster brake” in 1894, which sold successfully, and also invented the “free-wheel” in 1903. Fichtel died in 1911, and Sachs, in 1932. The first Sachs engine did not come out until 1930.

Sachs introduced their first Saxonette moped in 1937, a 60cc two-stroke 1.2 hp “motor wheel” where the rear wheel and motor were a unit. 320,000 were made in 1937, and 500,000 in 1938. Read more at https://en.wikipedia.org/wiki/Sachs_Motorcycles

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sachs engines have the following numbering scheme:  SSX/YZ(W)

• SS is the engine size 30, 50, 80, 100, 150, 175 (50 for US models)
• X is the bottom end designation 1, 2, 3, 4, 5, 6 (4, 5 or 8 for US models).
• Y is the number of speeds 1, 2, 3, 4, 5, 6 or A ( 1 or A for US models)
• Z is the cylinder designation, and represents the speed restrictions applied, and may be A, B, C or D
• W is an additional designation sometimes included on later models and import models to identify other peculiarities. A “K” for example indicates the kickstart version.

Examples:

• 301/A   is 30 cc size, type “1” bottom end (rear bicycle wheel), “A” automatic transmission
• 501/4A is 50 cc size, type “1” bottom end (1960’s   kick-start), “4” speed manual trans.
• 502/2A is 50 cc size, type “2” bottom end (1960’s with pedals) “2” speed manual trans.
• 504/1A is 50 cc size, type “4” bottom end (1970’s   no pedals), “1” speed, “A” speed version
• 505/1D is 50 cc size, type “5” bottom end (1970’s with pedals), “1” speed, “D” speed version
• 508/A   is 50 cc size, type “8” bottom end, (80’s 2sp no pedals) “A” automatic transmission
• 1005/5A 100 cc size, type “5” bottom end (1980’s   kick-start), “5” speed, “A” speed version
• 1255/6A 125 cc size, type “5” bottom end (1980’s   kick-start), “6” speed, “A” speed version

 

 

Benelli models with 4M, 4MS, 4M65 engines 1965-77

49 or 59cc vertical cylinder 4-speed foot-shift, manual clutch.

 

 

 

 

 

4M engine: The 4M has a mild cylinder, with shorter and narrower ports, a 12mm ID intake, and a smaller 12mm Dellorto SHA 14/12 side-draft carburetor.

The 4M engine was on the 1968-69 Benelli Dynamo Compact. M means marce, Italian for “march”, or in the motorcycle industry “foot-shift”.

4MS engine: The 4MS has a “sport” cylinder, with taller and wider ports, a 16mm ID intake, and a larger 16mm Dellorto UA16S down-draft carburetor. Horsepower 4.5 at 7800 rpm. This is the version shown in the parts illustration.

The 4MS engine was on the ’65-68 Benelli Fireball, ’67-68 Fireball Trail, ’65-68 Riverside 450SS, and ’69 Dynamo Trail and Super Mini.

1965-68 Ward Riverside 450SS with Benelli 4MS engine

4M and 4MS partial parts list:

00#  price 0 1970# 00000 description        specs
002  $0.20 ‌MU332 head washer ∅6
003  $0.30 ‌MU280 head & ex. nut M6
008  none  ‌B1348/2 spark plug = NGK BR6ES
009  none   ‌G7007 cylinder stud M6 x ?
011  $12.0 ‌G7010 head gasket ∅41
013  none   ‌G7011/2 base gasket
035  $7.50  MU2265  drive seal 28-38-7
084  $00.0 MU7865 right crank seal
087  $45.0 G7346 piston bare dome top hi-comp use #91
089  $10.0 ‌G7347 0 piston ring Std 40.0 x 1.5 GN
089  $22.0 G7347/2 piston ring 1os 40.2 x 1.5 GN
089  none   G7347/4 piston ring 2os 40.4 x 1.5 GN
089  $10.0 G7347/6 piston ring 3os 40.6 x 1.5 GN
090  $8.00 G7115 piston pin ∅12 x ?
091  $65.0 ‌G7346/C   piston assy Std 40.0 x 17-12-18 GOL
091  N/A     G7346/C2 piston assy 1os 40.2 x 17-12-18
091  N/A     G7346/C4 piston assy 2os 40.4 x 17-12-18
091  N/A     G7346/C6 piston assy 3os 40.6 x 17-12-18
100  N/A     G7342 left crank seal 15-25-5

101  $70.0 G29 carburetor for 4M, Dellorto SHA 14/12 #58 jet
101  $00.0 G29 see Benelli FA section for parts list

 

 

 

 

4M65 engine: Since 1970 the 4M and 4MS 49cc engine size was increased to an advertised 65cc on the 4M65. But the actually size was 59.3cc. Bore and stroke were 44 x 39 mm. That was dishonesty in labeling, motivated by “bigger is better” thinking.

The Benelli 4M65 engine is on 1971-73 Mini Enduro, 1970-72 Cougar, 1970-71 Dynamo Compact, Dynamo Trail (Scrambler), Woodsbike, 1972-73 Compact II, Dynamo II, Woods II, 1974-75 Dynamo Trail, 1976-77 Dynamo. It has large square head, larger piston, Dellorto ME15BS carburetor. 

 

 

 

 

Benelli models with 3V, 3VK, 3VK-1978 engines

49cc vertical cylinder 3-speed grip-shift, manual clutch.

 

 

 

 

 

 

 

 

 

 

3V and 3VK partial parts list:

00#  price 0 1980# 0000 1970# 00000 description        specs
004  $0.30 ‌92.60.22.06 MU280 head & ex. nut M6
005  $0.20 ‌95.00.02.06 MU332 head washer ∅6
006  $4.00 ‌96.50.61.05 G7483 cylinder stud M6 x 105 (107 total)
007  N/A     ‌70.02.24.00 G7825 head
008  $7.00 ‌48.02.20.70 G7010 head gasket ∅41
007  N/A     ‌00.00.00.00 G7006/A cylinder (different from FA)
011  N/A     ‌00.00.00.00 G310 intake pipe ∅18 at clamp (different from FA)
062  N/A     00.00.00.00 G7011 base gasket
095  $47.0.0 70.06.04.00 G7346 piston bare dome top hi-comp use #183
096  $10.0 48.06.12.70 G7018 piston pin ∅12 x ?
097  $1.50 90.27.20.12 L339 piston pin clip ∅12
098  $10.0 ‌48.06.08.70 G7347 0 piston ring Std 40.0 x 1.5 GN
098  $22.0 48.06.08.72 G7347/2 piston ring 1os 40.2 x 1.5 GN
098  none   48.06.08.74 G7347/4 piston ring 2os 40.4 x 1.5 GN
098  $10.0 48.06.08.76 G7347/6 piston ring 3os 40.6 x 1.5 GN
106  N/A     70.71.24.00 G7094/4 magneto assy Dansi MSL105
106  N/A     00.00.00.00 G7094/2 magneto assy CEV 6097
106  N/A     70.71.16.20 G00000  magneto assy Dansi 100844  on 3VK NT (Export FA)
133   00.00.00.00 M56/2  points for MSL105 01.3240 photo
135  $15.0 00.00.00.00 M26/2  condenser for MSL105 M17D photo
150  $70.0 70.11.26.00 G29  carburetor Dellorto SHA 14/12L genuine, modern (not all metal)  
150  $00.0 00.00.00.00 G29  with correct #58 jet, 18 clamp sleeve, air cover, screen and clip
157  $5.00 35.93.57.00 DE1486/58main jet 58
133  $00.0 00.00.00.00 G7094/2Dpoints for CEV 6097
183  $65.0 70.06.02.20 G7346/C   piston assy Std 40.0 x 17-12-18 GOL
183  N/A     70.06.02.22 G7346/C2 piston assy 1os 40.2 x 17-12-18
183  N/A     70.06.02.24 G7346/C4 piston assy 2os 40.4 x 17-12-18
183  N/A     70.06.02.26 G7346/C6 piston assy 3os 40.6 x 17-12-18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Benelli models with GM, GK engines 1965-73

49cc horizontal cylinder 1-speed, automatic clutch

 

 

 

 

 

 

 

GM engine (Gentlemen Monomarcia 49cc) is on the 1965-69 Benelli Gentlemen (Italy model), father of the Benelli G2. It is also on the 1969 Benelli Maverick (US model), a front-gas-tank version of the Gentlemen. Notice the 1967 spelling of Gentlemen, not Gentleman. The Gentlemen spelling appears in several late 60’s official publications. 1970 official brochures said Gentleman. See Benelli’s with G2, G2K engines. Here we will use Gentlemen for 1960’s and Gentleman for 1970’s. 

The GM engine has a Dansi MDP44 magneto and front-facing Dellorto SHA 14/9 carburetor. It does not have internal pedals. Instead both motor and pedal chains are on the left side, very unusual.

The Gentleman with pedals had a Domino left control with a start lever, instead of a left twist grip start control like the 1965-69 Wards Riverside had. It is visible in the photo. So it’s in bicycle mode all the time, until you pull the start lever.

GK (Gentlemen Kickstart 49cc) engines are on US-model mini-cycles. The kick models do not have pedals or a pedal chain.  The GK and GK-65 engines have a two-piece transmission cover, different than a GM one-piece. They do not have pedals or a pedal chain.

USA mini-cycles with GK and GK65 engines have Dansi ADP244S magnetos and front-facing carburetors, Dellorto SHA 14/12.

 

GM partial parts list:

00#  price 0 1980# 0000 1970# 00000 description        specs
001 $10.0 ‌ 70.09.30.10 G244/20 start cable for lever control 1L 52 x 57″
001 $00.0 ‌ 70.09.30.10 G244/20 146, 147, 148, 149, 150 not included
002  $00.0 00.00.00.00 G29/A carburetor SHA 14/12 
050  N/A     00.00.00.00 N14 magneto assembly Dansi MDP44 82/110 x 94
059  $4.00 ‌96.50.61.05 G7483 cylinder stud M6 x 105
060  $0.20 ‌95.00.02.06 MU332 head washer ∅6
061  $0.30 ‌92.60.22.06 MU280 head & ex. nut M6
067  $0.00 00.00.00.00 G7019 piston bushing
076  $45.0 70.06.04.00 G7346 piston bare dome top hi-comp use #165
077  $0.00 48.06.12.70 G7018 piston pin ∅12 x ?
079  $10.0 ‌48.06.08.70 G7347 0 piston ring Std 40.0 x 1.5 GN
079  $22.0 48.06.08.72 G7347/2 piston ring 1os 40.2 x 1.5 GN
079  none   48.06.08.74 G7347/4 piston ring 2os 40.4 x 1.5 GN
079  $10.0 48.06.08.76 G7347/6 piston ring 3os 40.6 x 1.5 GN
080  $9.00 ‌48.02.48.70 N23 base gasket
084  $12.0 ‌48.02.20.70 G7010 head gasket ∅41
086  $4.50 ‌00.00.00.00 N183 spark plug = NGK BR5ES
088  $2.00 00.00.00.00 UI7496 exhaust stud M6 x 26
090  $65.0 ‌70.06.02.20 G7346/C   piston assy Std 40.0 x 17-12-18 GOL
090  N/A     70.06.02.22 G7346/C2 piston assy 1os 40.2 x 17-12-18
090  N/A     70.06.02.24 G7346/C4 piston assy 2os 40.4 x 17-12-18
090  N/A     70.06.02.26 G7346/C6 piston assy 3os 40.6 x 17-12-18
092  $6.00 00.00.00.00 G7096 spark plug cap plastic
093  N/A     00.00.00.00 SD462/3 stator plate ∅94 for 01.3239 points
094  N/A     48.70.95.70 G221/11 lubricating felt
095  N/A     35.70.79.00 G221/3 points and cond. screw
096  48.70.86.70 G26/2 = G221/6 condenser M17T 07.0074 0.28 μf, ∅18 x 21 photo
097  N/A     00.00.00.00 N14B internal spark coil
098  00.00.00.00 SD462/2 points 01.3239 photo
099  $0.40 70.71.89.20 G221/8 thin lock washer ∅4 x 7 x 0.5
100  $1.20 35.71.57.50 G221/7 coil screw M4 x 25 slot
101  N/A     00.00.00.00 N14/C lights coil
102  N/A     00.00.00.00 N14/A flywheel Dansi MDP44 82 id x 110 od
146 $0.50  48.80.18.70 UI7191  start cable cap subst.  for 1L F5C photo
147 $4.00  48.80.25.70 G10       start cable spring subst. 6.5-7.0 id x 60-75
148 $3.00  48.80.24.70 M277     start cable pinch bolt for 1L P20 photo
149 $3.00  70.62.69.20 G000     start lever adjuster   for 1L A3a photo
150 $4.00  00.00.00.00 G000     Domino start lever anchor pin D14a

 

 

Benelli models with GK65 engines 1969-73

59cc horizontal cylinder 1-speed, automatic clutch

 

 

 

 

 

 

 

 

GK65 engine: (Gentlemen Kickstart 59cc) engines are on 1970-73 US-model mini-cycles. The model names say “65” but the actual size was 59cc, not 65cc. The bore and stroke are 44 and 39 mm, so (44/2)*(44/2)*3.14*39/1000 = 59.27 cc. The GK and GK-65 engines have a two-piece transmission cover, different than a GM one-piece. They do not have pedals or a pedal chain.

These have Dansi ADP244S magnetos and front-facing carburetors, Dellorto SHA 14/12. 

 

 

GK65 partial parts list

00#   price   1970#    description      specs
071  none   G244/26  start cable
o1A  none   G244/27  start cable
072  none   G10  start spring
073  $3.00 N277  start pinch bolt P20 photo
050  $0.30 MU280  head & ex nut M6
072  none   N134  magneto complete  Dansi ADP244S  photo
B82  none   G421  piston bare ∅44 use #165
083  $8.00 G424 piston pin ∅12 x ?
084  $1.00 MU339 piston clip ∅12
085  $10.0 G591    piston ring Std 44.0 x 1.5 GN
085  none   ‌G591/2 piston ring 1os 44.2 x 1.5 GN
085  none   ‌G591/4 piston ring 2os 44.4 x 1.5 GN
085  none   ‌G591/6 piston ring 3os 44.6 x 1.5 GN
105  none  ‌B1348/2 spark plug = NGK BR6ES
108  none   ‌G422 head gasket ∅45
110  $4.00 G7483 cylinder stud M6 x 105
111  $0.20 MU332 washer M6
112  none   ‌N316 base gasket
117  $2.00 UI7496 exhaust stud M6 x 26
121  $00.0 G29/A   carburetor SHA 14/12
152  none   N134/A  flywheel ∅82 ∅110 aluminum Dansi ADP244S
153  none   G314/A  lighting source coil
154  none   G221/2  ignition source coil (with external ground wire that powers brake light)
155  $1.20 G221/7  coil screw M4 x 25 slot
156  $0.40 G221/8  thin lock washer  ∅4 x 7 x 0.5
157  none   SD401  screw set
158  $21.0 CS0004  points #01.3239  photo  (gap 0.015″)
159  $15.0 G221/6  condenser #07.0074  0.28 μf, ∅18 x 21 photo
160  $1.50 G221/3  points screw M4 x 8 small slot
161  none   SD426/3  stator plate bare ∅94  2+3 hole
165  none   ‌G421/C   piston assy Std 44.0 x 17-12-18
165  none   ‌G421/2C piston assy 1os 44.2 x 17-12-18
165  none   ‌G421/4C piston assy 2os 44.4 x 17-12-18
165  none   ‌G421/6C piston assy 3os 44.6 x 17-12-18

 

 

 

Benelli models with FA engines 1960?-75

49cc vertical cylinder 1-speed automatic clutch.

 

FA engine (Frizone Automatico) engine had an upright slanted forward cylinder, not horizontal like the GM or G2 motor. It was rounded everywhere, not mostly square like the 1970’s motors. The pedals were part of the motor unit, not separate like on the G2.

The 1965-69 Wards Riverside 150D and 250D mopeds, the 1974-75 Benelli 3FA moped. and 1976 Benelli Export FA had FA engines. The left grip was a twist grip that operated the starting clutch. Normally the bike is in pedal mode. Twist the left grip back to engage the motor for starting. Once started it is under automatic clutch control, engaged above 10mph and in neutral below about 5mph. The hand levers are hand brakes, left rear and right front. The controls are early Domino. Throttle is a wrap-around type.

 

 

The Benelli FA and M4 cylinders are the same as the Benelli M4S cylinder on the 50cc Fireball, except the porting. The Fireball cylinder has a 17mm (for the Dellorto UA16 carb) intake port at the flange, while the FA (and M4?) have a 10mm intake port hole (for a Dellorto 14/12 carb). The exhaust port is taller and wider on the Fireball. The transfer ports and intake port are also wider and maybe taller.

The 1960’s Benelli FA, M4 and M4S piston is the same as the 1970’s Benelli G and G2 piston. They are all 40.0mm bore, 39 stroke, and use the same rings 40 x 1.5 FG. The exhaust has a screw-on mount, with M34-1.5 male thread on the exhaust, female on the cylinder.

 

---

1965-67 Wards Riverside (Benelli FA engine)

Mopeds with manual starting clutches usually have an extra hand lever below the left handlebar, for starting. Instead of a start lever, Benelli has a start grip. You pedal the bike, then twist the left grip, to engage the engine. Then let go once the engine has started.

Date: The date of manufacture is not stated on the ID plate or anywhere else on the frame. On 250D models with original speedometers, there may be a date stamped in ink, on the bottom of the speedometer shell. Remove the speedometer to see it.

Here is a link to the 1965 Wards Riverside Service Manual

 

Wards Product Codes 

FFA-61-14001A  1965-66 Riverside 250-D 1.5hp red/wht long seat 2.25-18
FFA-61-14018A  1965-66 Riverside 150-P 1.5hp red/wht solo  seat 2.25-18
FFA-61-14001B  1966-67 Riverside 250-D 1.5hp red/wht long seat 2.25-18
FFA-61-14018B  1966-67 Riverside 150-D 1.5hp red/wht solo  seat 2.25-18

 

 

 

 

 

 

 

 

 

 

 

 

---

This is an entire 1965-67 Montgomery Ward Riverside moped parts manual, condensed, colorized with prices, availability and specifications added. It is combined with a 1976 Benelli Export FA engine parts illustration and parts list. In ten years not much changed except the starting clutch and maybe something else.

On parts that have different sizes, the 1976 part numbers say the size in millimeters, here colored in orange.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FA engine complete parts list:

66# 76#  price  0 ’76 part#    ’66 part#    description   specs
001 000  $0.00  00.00.00.00  MU1476  coil bolt M6 x ??
002 073  $0.20  95.00.02.06  MU332  washer M6
003 074  $0.30  92.60.22.06  MU280  nut M6-1.00
004 000  none.  00.00.00.00  I9161  ignition coil ’66 round can type
000 C72  $78.0 71.71.65.10  G000   ignition coil ’76 H79 E type Dansi photo
000 C72  $43.0 71.71.65.10  G000   same but good-used, both sold “as is”
005 000  $3.00  00.00.00.00  I9161/1  ground wire
006 119  $4.00  96.50.61.05  G7483  cylinder stud M6 x 105
007 047  none   35.71.70.00  B1348/2  spark plug NGK B6ES now BR6ES
008 C86  $6.00  45.71.74.00  G6076  spark plug cap modern plastic 
009 C73  $2.00 823.91.00.70 G25  spark plug wire 12″
010 043  none.  70.11.50.10  G7350  intake pipe ∅18 od
011 046  $0.00  70.11.55.00  G7015  intake gasket
012 045  $0.25  95.02.11.06  MU432  lock washer M6

013 000  $3.00  00.00.00.00  G7496  intake stud M6 x 30
000 044  $0.70  98.62.23.20  00000  intake bolt M6 x 20 allen 
014 005  none.  48.09.39.70  G7947  starter lever-shaft ∅11
015 007  none.  48.08.76.70  G7948 start lever inner
016 008  $2.00  90.27.10.11  G7949  start shaft retaining ring external ∅11 x 1
017 006  $0.00  90.70.61.07  G4  start shaft seal ring 10 id ?
018 019  none.  48.08.19.70  G7944/1  adjustment screw
019 017  none.  48.08.20.70  G7944/2  clutch shoe
020 018  none.  48.08.35.70  G7944/3  clutch shoe spring
021 009  none.  48.08.55.70  G7946  clutch push rod ∅6 x 31
022 000  none.  00.00.00.00  G7945  thrust cap
023 015  $1.50  90.27.10.15  MU3813  retaining ring external ∅15
024 020  $1.50  90.27.10.10  MU8153  shoe retaining ring external ∅10
025 000  none.  00.00.00.00  G7944/5  washer M10
026 012  none.  48.08.26.70  G7944/6  starter clutch plate
027 016  $0.00  48.08.16.70  G5  washer 16 id?
000 011  $6.00  48.02.32.70  G418  retaining ring ∅95 x 2.0
028 021  none.  69.08.46.00  G7944/7  clutch drum with gear 
029 048  none.  70.02.24.00  G7825  cylinder head
030 049  $12.0  48.02.20.70  G7010  head gasket
031 050  none.  70.02.03.10  G7438  cylinder
032 051  $0.00  70.02.08.00  G7011/1  base gasket
033 033  $5.00  90.27.20.42  MU7062  retaining ring internal ∅42 x 1.7
034 034  $10.0  90.20.10.20  MU7056  right drive shaft bearing 6302 15-42-13
035 035  none.  70.21.36.10  G7987  secondary gear shaft
036 029  $0.00  91.60.03.37  MU3817  clutch woodruff key
037 037  none.  70.21.45.10  G7774  secondary shaft gear
038 038  $10.0  90.20.11.20  MU3061  left drive shaft bearing 6302Z 15-42-13 
039 039  $7.50  90.40.28.38  MU2265  drive seal 28-38-7
040 040  none.  70.33.05.10  G7340  drive sprocket
041 041  $0.00  70.21.93.00  G73440  sprocket nut
042 025  $0.00  48.21.93.70  L837  gear shaft nut
043 026  none.  70.21.58.10  G9  large primary gear
044 034  $10.0  92.20.10.20  MU7038  right gear shaft bearing 6003 17-35-10
045 035  none.  70.21.36.10  G7988 gear shaft
046 037  none.  70.21.45.10  G7039  small primary gear
047 038  $7.00  92.20.11.20  L746  left gear shaft bearing 6201  12-32-10
048 032  none.  70.01.42.10  G7777  left case plug
049 060  $1.20  98.62.03.45  M79  clutch cover screw M6 x 45 allen black
050 059  $0.80  98.62.03.25  MU1414/1  mag. cover screw M6 x 25 allen black
051 061  none.  70.00.16.10  G1  clutch cover
052 064  none.  70.00.49.10  G7092/1  dip stick
053 063  $0.00  70.08.38.10  G8  bushing with lip
054 070  $0.00  35.00.20.00  UI7080  dowel tube ∅6 ∅8? x 20?
055 059  $0.80  98.62.03.25  MU1224 case screw M6 x 25 allen black
056 067  none.  48.00.46.71  L492  breather
057 068  $0.00  90.71.40.80  L493  seal washer
058 069  none.  70.00.10.00  G7861  right case half
059 077  none.  90.40.19.27  MU7778  right crank seal 19-27-6   
060 078  $0.00  90.20.14.16  G7365  L & R crank bearing 6004 C3   20- 42-12
061 082  none.  70.06.44.10  G7943  right crank half
062 052  $10.0  48.06.08.70  G7347  piston ring 40.0 x 1.5 GN
062 000  $22.0  48.06.08.72  G7347/2   piston ring 1os 40.2 x 1.5 GN
062 000  none    48.06.08.74  G7347/4   piston ring 2os 40.4 x 1.5 GN
062 000  $10.0  48.06.08.76  G7347/6   piston ring 3os 40.6 x 1.5 GN
063 053  $47.0  70.06.04.00  G7346  piston bare (substitute)
064 056  $1.50  90.27.20.12  L339  piston clip ∅12
065 000  none.  00.00.00.00  G7116  connecting rod bare, for bushing
000 057  none.  48.06.16.70  G0000  connecting rod bare, for bearing
066 000  $0.00  00.00.00.00  G7019  piston pin bushing ∅12 ∅14?
066 054  $0.00  95.25.20.12  00000  piston pin bearing ∅12 ∅15?
067 055  $10.0  48.06.12.70  G7018  piston pin ∅12
068 000  none.  00.00.00.00  MU7112  rod bearing rollers
069 000  none.  00.00.00.00  G7111  rod bearing cage
000 058  none.  92.25.20.12  00000  rod bearing assembled
070 083  none.  70.06.50.00  G7115  crank pin
071 084  none.  70.06.43.00  G7119  left crank half
072 081  $2.00 ‌ 91.60.02.38  G7274  flywheel woodruff key M81 2.0 x 3.7
073 085  none.  90.40.15.25  G7342  left crank seal 15-25-5
074 088  $0.00  91.55.10.70  UI281  grommet
075 087  none.  70.00.07.10  G7862/2  left case half
076 000  $0.70  00.00.00.00  MU7084  lock washer M4 toothed
077 089  $1.30  98.20.04.10  MU1147  stator plate screw M4 x 10 slot
 Dansi magnetos: all ∅82 id rotors, ∅94 od stators xx  IIN means Internal spark, Int. ground, No brake light
66# 76#  price  0 ’76 part#    ’66 part#  xxxxxx  wires xxx EEB means External spark, Ext. ground, Brake light
078 000  none.  00.00.00.00  G221   magneto ign lts gnd ASL205NS ∅110 ⇐ EEB ’65-67 Wards Riverside
078 000  none.  00.00.00.00  G7094 magneto ign lts xxx MSL105 xx ∅110 ⇐ IIN ’65-73? Export FA
000 090  none.  70.71.24.00  G000   magneto ign lts xxx 100844   xx ∅103 ⇐ EIN ’73-80? Export FA
079 091  $1.80  95.10.12.75  UI7091  flywheel washer ∅9 ∅17 inner teeth
080 092  $0.00  92.75.00.73  I9020  flywheel nut M8-1.0 x ?
081 093  none.  70.00.02.10  G7767  magneto cover
082 000  none.  00.00.00.00  M93  MW name plate
083 000  none.  00.00.00.00  B1219  name plate rivet
084 098  none.  70.12.08.00  G7840  exhaust header pipe
085 096  $0.00  70.12.03.00  G7009  exhaust seal ring ∅30? od
086 097  none.  70.12.02.00  G7763  exhaust nut M34-1.50
087 099  none    70.12.69.00  G7841/1  muffler clamp
088 100  none.  70.12.30.00  G7841  muffler 32 id rear
089 000  $2.00  00.00.00.00  MU614C  muffler bolt w/nut M8 x 15
090 000  $33.0  00.00.00.00  G7918/2  baffle 31.8 x 300 (Tomos substitute)
091 000  none.  00.00.00.00  G7918/2  baffle screw
092 106  $2.00  91.77.00.92  G7085  pedal pin ∅9.0
093 000  $18.0  00.00.00.00  G7087/C  pedal set replacement photo
094 000  $35.0  00.00.00.00  G7923/C  pedal crank set 502 replacement
094 105  none   70.26.15.10  G0000  right pedal crank 502R rep. (needs high offset)
094 117  $20.0  70.26.15.11  G0000  left pedal crank 502L replacement
095 000  none.  96.50.60.80  G105    case stud M6 x 80 use bolt
000 071  $1.20  98.62.03.70  G0000  case bolt M6 x 70 allen
096 000  none.  96.50.60.65  G7013  case stud M6 x 65 use bolt
000 072  $1.20  98.62.03.55  G0000  case bolt M6 x 55 allen
097 070  none.  35.00.20.00  G7356  spacer ∅6 x 20?
098 000  none.  00.00.00.00  MU7075  bushing circlip ∅20? external
000 108  $1.50  90.27.11.16  00000  pedal shaft circlip ∅16 external
099 000  none.  00.00.00.00  G7110 kick-starter right bushing with clip groove
100 107  none.  90.40.16.25  MU3796  pedal shaft seal 16-25-5
101 110  none.  70.26.67.00  G7055  pedal shaft inner spacer ∅17
102 109  $0.00  70.26.74.00  G7354  pedal shaft washer
103 112  none.  70.26.66.10  G368  pedal shaft gear
104 113  none.  70.26.65.10  G7358  engage dog
105 114  none.  70.26.52.00  G7072  engage dog spring
106 115  none.  70.26.53.11  G7348  pedal shaft
107 036  $0.00  70.01.76.00  G7138  case stud M6 x ??
108 000  none.  00.00.00.00  G7370  pedal shaft bushing
109 079  $0.00  90.71.40.62  L417  drain plug seal washer 
110 080  $0.00  98.05.43.10  MU234  drain plug
111 000  none.  00.00.00.00  G221/2  ignition source coil (with external ground wire for brake light)
111 000  none.  00.00.00.00  G0000   internal spark coil for MSL105
000 157  none.  70.71.51.20 G0000  ignition source coil for 100844
112 156    48.70.86.70  G221/6  condenser #07.0074  0.28 μf, ∅18 x 21 photo
113 164  $1.50  35.70.79.00  G221/3  points screw M4 x 8 small slot
114 000  none.  00.00.00.00  G221/1  stator plate bare ∅94  2+3 hole
000 155  none.  70.70.22.20  G0000  stator plate bare ∅94  2+3 hole for 100844
115 000  none.  00.00.00.00  G221/4  points #01.3236 photo  (gap 0.015″)
000 159  none.  70.70.88.20 $16.0  points #M14 for 100844
116 000  none.  00.00.00.00  G221/10  flywheel ∅82 ∅110  Dansi ASL205NS photo 
000 162  none.  70.71.16.20  GG0000  flywheel ∅82 ∅103  Dansi   100844  photo
117 000  none.  00.00.00.00  G221/9  lighting coil 6V 28W = 21W head + 5W tail + 2W speedo
000 158  none.  70.71.50.20 G0000  lighting coil for 100844
118 163  $0.40  70.71.89.20  G221/8  thin lock washer  ∅4 x 7 x 0.5
119 000  $1.20  35.71.57.50  G221/7  coil screw M4 x 25 slot
000 161  $0.00  35.71.55.00  00000  coil screw M4 x ?? slot
120 164  none.  48.71.57.70  G221/5  screw set
121 160  none.  48.70.95.70  G221/11  lubricating wick (felt)
122 100  $65.0  70.06.02.20  G7346/C  piston complete modern 40.0 x 17-12-18 GOL made in Italy
122 100  none.  70.06.02.22  G7346/C2  piston complete  1st  o.s 40.2 x 17-12-18
122 100  none.  70.06.02.24  G7346/C4  piston complete 2nd o.s 40.4 x 17-12-18
122 100  none.  70.06.02.26  G7346/C6  piston complete 3rd o.s 40.6 x 17-12-18
123 000  none.  00.00.00.00  G7116/C  connecting rod assy for bushing
000 154  none.  70.06.40.10  G00000  connecting rod assy for bearing
124 042  $70.0  70.11.26.00  G29  carburetor Dellorto SHA 14/12 genuine, modern (not all metal)  
124 000  $75.0  00.00.00.00  G29  with correct #58 jet clamp sleeve, air cover, screen and clip
125 146  $5.00  49.93.87.00  DE1104/C  throttle cable adjuster w/nut A13
126 145  $2.00  43.93.28.00  DE3318  top screw M4-0.75 x 14
127 135  $16.0  43.93.50.00  DE6110/C  carb top assy good-used
128 142  $10.0  43.93.75.00  DE6108  throttle slide #1 good-used
129 136  $3.00  43.93.22.00  DE6111  top gasket
130 140  $2.00  43.93.63.00  DE3606  idle screw spring
131 141  $4.00  43.93.86.00  DE6140  idle speed screw
132 126  $2.00  46.93.86.00  DE6305  carb clamp screw M6
133 127  $2.50  43.93.76.00  DE6304  clamp screw nut M6
134 000  $0.00  00.00.00.00  DE3724  intake pipe restrictor/reducer ∅12-to-10 ?
135 134  $5.00  46.93.89.00  DE6448  clamp sleeve ∅20-to-18
136 123  $2.00  46.93.47.00  DE6123  float gasket round but goes in D-shaped groove
137 122  $5.00  43.93.44.00  DE6107  float bowl metal used
138 121  $4.00  43.93.45.00  DE3598  float bowl screw M4-0.75 x 18
139 133  $5.00  35.93.57.00  DE1486/58  main jet 58
140 125  $2.00  43.93.31.00  DE4560  float hinge pin Ø2.0 x 16.5 
141 124  $18.0  43.93.30.00  DE6122  float white hollow plastic 3.5 grams
142 132  $10.0  43.93.48.00  DE2838  float needle valve with  viton rubber tip
143 131  $5.00  00.00.00.00  DE6109  fuel filter disk
144 130  $8.00  00.00.00.00  DE6106  fuel inlet banjo, metal angled out, good-used
144 130  $7.00  00.00.00.00  DE9249  fuel inlet banjo, black plastic angled
145 129  $1.50  00.00.00.00  DE3385  seal washer 5 x 9
146 128  $5.00  00.00.00.00  DE4190  fuel inlet screw M5-0.75 x 15
147 148  $10.0  70.93.10.20  DE6183  air cover #53051a 
147 148  $17.0  00.00.00.00  DE0000  air cover set #53051 3-piece 53051 a,b,c
148 147  $9.00  43.93.25.00  DE6117  air filter metal #53051c
149 144  $3.00  00.00.00.00  DE6159  air filter gasket
150 139  $3.00  00.00.00.00  DE5417  choke pivot screw
151 138  $3.00  00.00.00.00  DE6105  choke spring
152 137  $7.00  00.00.00.00  DE6114  choke plate-lever medium
153 149  $6.00  70.93.42.20  DE6235  air cover clip #53051b
154 076  $0.80  92.60.22.08  MU187  nut M8
155 075  none.  96.50.80.98  H8256  case stud M8 x 98
156 086  none.  70.00.09.00  G7830  case gasket
157 065  none.  70.00.06.00  G7835  clutch gasket
158 024  none.  70.07.03.10  G3  clutch drum bushing
159 000  none.  00.00.00.00  G244/3  start cable for twist control 2T 52 x ?? use 1T
000 001  none.  00.00.00.00  G0000   start cable for lever control 2L 52 x ?? use 1L
159 000  $12.0  00.00.00.00  G0000   start cable for twist control 1T 52 x 57″
000 001  $10.0  70.09.30.10  G244/20 start cable for lever control 1L 52 x 57″
000 C41  $3.00  70.62.69.20  G7/4 00 adjuster for 1T,1L start cable A3a see below 41
000 C35a $4.50  00.00.00.00  Gooo    cable anchor pin D14a substitute image see 35a
000 002  $3.00  48.80.24.70  M277    pinch bolt for 1T,1L start cable P20 photo
000 004  $0.50  48.80.18.70  UI7191 stop cap   for 1T,1L start cable F5C photo 
160 003  $4.00  48.80.25.70  G10 oo  start cable spring subst. 6.5-7.0 id x 60-75
161 000  none.  00.00.00.00  G7944/C  clutch complete ’66
000 165  none.  70.08.00.10  000000   clutch complete ’76
162 000  none.  00.00.00.00  G79  crankshaft with piston pin bushing
100 152  none.  70.06.40.10  000  crankshaft with piston pin bearing
163 150  none.  70.99.90.20  G242/1  gasket set
164 151  none.  69.99.95.01  G243/1  seal set 5-piece
164 151  none.  69.99.95.01  G243/1  19-27-6, 15-25-5, 28-38-7, 16-25-5, 16-25-5
165 000  $0.00  00.00.00.00 G29/1  throttle cable 2-ended (for wrap-around throttle)
000 120  $0.00  35.11.75.40  00000  throttle cable 1-ended (for slide-type throttle)
166 F32  $1.00 823.94.50.80 G7187/3  fuel hose 12″ clear 3/16″id 5/16″od

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The rear sprocket has a 36.5mm centering hole (not 39.5), and a 62mm bolt hole spacing diagonally.