Engine Hardware

July 13, 2016

updated 2019-12

Contents:
1. Top End Hardware    2. Woodruff Keys 
3. Engine Nuts wares    4. Shim Washers
5. Circlips (Snap Rings) 6. Variator Weights

 

 

1   T O P   E N D   H A R D W A R E


P I S T O N   P I N S
∅10  (9.98) x 32.0  $0.00  Tomos A3 #201627
∅12(11.98) x 30.0  $0.00  Derbi #00.00.000, Solex
∅12(11.98) x 30.5  $0.00  Sachs 504,505 1A,1B
∅12(11.98) x 31.3  $0.00  Minarelli V1   #4480
∅12(11.98) x 31.5  $0.00  Puch E50,ZA50 #331.110.0111
∅12(11.98) x 31.5  $0.00  Morini #26-8001, Demm
∅12(11.98) x 31.8  $0.00  Sachs 504,505 1C,1D
∅12(11.98) x 32.0  $0.00  Tomos A35,A55 #227501
∅12(11.98) x 32.4  $0.00  Garelli H1,H2,G2,V2
∅12(11.98) x 32.4  $0.00  Laura M48,M56 #480501
∅12(11.98) x 32.9  $0.00  Peugeot 102,103 #27194
∅12(11.98) x 34.5  $0.00  Minarelli V1L #4481
∅13(12.98) x 30.0  $0.00  Motobecane #F15094

 


Piston pin clips: 2-tail, 1-tail, no tail, circlip

P I S T O N   P I N   C L I P S
clip ∅10 x 0.9 no tail   $3.00  Honda 13115-147-000

clip ∅10 x 1.2,  1 tail   $1.00  generic 132038
clip ∅10 x 1.2,  2 tail   $1.00  Tomos 032038

clip ∅12 x 1.2,  2 tail   $1.00  Tomos 032039
clip ∅12 x 1.2,  1 tail   $1.00  Minarelli 4490, Morini 10.4001
clip ∅12 x 1.2 no tail   $1.90  generic for Honda 13115.156.000
circlip ∅12 x 1.2 tail    $1.00  Peugeot 22309, Piaggio S.6612
clip ∅13 x 1.2,  1 tail   $1.50  Motobecane 00658, generic 132039
clip ∅14 x 1.2,  1 tail   $1.50  generic 633848

Choices: 1 or 2 tails is easier to install or remove. No tail is better for high RPM, where the tail rubs and can break off. No tail clips require a notch in the piston for removal. Circlip type (aka snap ring or retaining ring) is more secure and takes less skill, but requires special pliers and weighs more.

Important: So the clip doesn’t come out and destroy the engine, it must make a “snap” or “click” sound when it snaps into the groove. Mild pulling on the clip tail with a needle-nose pliers should not dislodge it from the clip groove. If it doesn’t click, then it has lost it’s spring tension, or maybe the piston pin is over part of the clip groove. Wire clips can be bent back, to restore tension.

 


Nuts: M5x25, M6x5, M6x6, M6x8, M6x8, M6x18

H E A D  o r  E X H A U S T   N U T S
steel nut  M5 -0.8 x 5   $0.40  regular
steel nut  M5 -0.8 x 25 $1.50  tall, Morini 13.3023
steel nut  M6 -1.0 x 5   $0.40  regular
steel nut  M6 -1.0 x 6   $0.60  thick
brass nut M6 -1.0 x 8   $2.50  thick, Puch #902.2919
brass nut M6 -1.0 x 8   $1.80  thick, sharp corners

steel nut  M6 -1.0 x 18 $1.00  tall, coupling nut
steel nut  M7 -1.0 x5.5 $0.60  regular
steel nut  M7 -1.0 x 7   $0.60  thick, Grimeca hub sprocket

steel nut  M7 -1.0 x 10 $1.50  thick, Motobecane #00011

Choices: Tall nuts (aka coupling nuts) are for hard to reach places. Thick nuts are for the head. They have more strength, and can hold more torque. Brass nuts are for the exhaust flange. They expand more when hot and stay tight.

 


Cylinder studs, oriented top end at right

C Y L I N D E R   S T U D S
M6  x 105  $4.00  Puch E50, ZA50 1970-86, #360.110.0341
M6  x 107  $4.20  Laura M56 engine, Trac 1982-86 #E1-14
M6  x 110  $3.80  generic for Puch, M56, others #407801

M6  x 114  none    Jawa 207 engine 1970-83+ #28-1112
M6  x 115  $7.50  Laura M48 engine,  Batavus  #829680
M6  x 116  $7.50  Honda 92700-06115
M6  x 130  $4.00  unknown app
M6  x 136  $4.00  Minarelli V1 series engines, MMI #5530
M6/7  105  $3.50  generic for stripped Puch case #6/7×105
M6/7  115  $4.50  generic for Tomos A55 2002-13, #233716
M7  x 103  $5.00  Garelli horizontal-cyl eng, #205001.3.486
M7  x 112  $3.50  Peugeot 103, 102 eng. 1975-83 #827022
M7  x 113  $5.00  Garelli vert.-cylinder eng. #000351.3.486
M7  x 115  $2.80  Tomos A3, A35 engines 1974-06, #205386
M7  x 117  $4.50  Derbi Variant engines 1974-86, #31.30.050
M7  x 120  $3.50  Vespa (Piaggio) #S.595
M7  x 129  $4.00  Motobecane 50V, 50, 40 engines #14716

C Y L I N D E R   B O L T S
M6 x 100  none    Honda PA50 cylinder hex bolt 95801-0610000
M6 x 120 
$5.00  unknown app cylinder hex bolt


Studs, oriented top at right

E X H A U S T  or  I N T A K E   S T U D S
M5  x 23  $3.50  Jawa exhaust #28-1410
M5  x 27  $3.00  Jawa intake #28-1408
M5  x 29  $2.00  unknown app
M5  x 33  $2.00  unknown app
M5  x 55  $2.00  unknown app
M5  x 62  $3.00  Motobecane air filter

M6  x 25  $2.00  many apps
M6  x 28  $2.00  Minarelli

M6  x 30  $2.00  Tomos A55 exhaust, others
M6  x 32  $2.00  unknown app
M5  x 62  $3.00  Motobecane air filter
M6/8  23  $5.50  step-stud for stripped thread repair
M8  x 33  $2.00  1.00 and 1.25 thread
M10 x44  $2.00  both ends 1.25 thread

 


223440 & 233718

C E N T E R I N G   T U B E S   a n d   P I N S
type outer inner length price      applications

pin   ∅6.00 ∅6.0 x 19  $2.50  Tomos #037.290 A3 clutch & case
tube ∅9.74 ∅6.2 x 16  $4.50  Tomos #223440 A35/A55 clutch & mag

 

Tomos A55 cylinder

E L A S T I C   C E N T E R I N G   S L E E V E S
outer inner length price      applications
∅7.7   ∅6.7 x 15 
 N/A     Puch #328.910.1081 Magnum cylinder 
∅8.2   ∅7.2 x 16  $2.00  Tomos #233718 A55 cylinder base

Note: These elastic sleeves get smaller when installed, like piston rings.
The installed diameter is 8.2 but the free diameter is like 8.7 mm.
You can see the large gap in the photo, that closes when installed.

 


top: normal edge
lower: chamfered

Woodruff key dimensions

2   W O O D R U F F    K E Y S

Woodruff key
and key groove

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Loose your woodruff key? You’re not alone. These tiny things have a huge importance.

When a magneto flywheel key is missing, and the nut is not fully tight, the flywheel can slip and cause the sparks to happen at the wrong time.

 

 

M-86 3 x 5, M-82 2.5 x 3.6, M-81 2 x 3.7 M-80 2 x 2.8

3 x 5 keys: M96 early Vespa beveled on bottom
M96a Vespa beveled on top, M86 not beveled

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width hgt. len. dia.  edge type    price   MMI#    applications
2.0 x 2.8 x 6.9 ∅07 derefmahc  $2.00 M-80 Garelli 1-spd 273.511.0046, CEV 6933 flywheel
2.0 x 3.7 x 9.4 ∅10 derefmahc  $2.00 M-81 Sachs 504 (KTM), CEV 6949 flywheel
2.0 x 3.7 x 9.4 ∅10 derefmahc  $2.00 M-81 Sachs 504, sm Bosch 0212 010 001 flywheel
2.0 x 3.7 x 9.4 ∅10 derefmahc  $2.00 M-81 Kreidler, sm Bosch 0212 010 002 flywheel
2.0 x 3.7 x 9.4 ∅10 derefmahc  $2.00 M-81 Italjet + Morini, Bosch 0212 010 003 flywheel
2.0 x 3.7 x 9.4 ∅10 derefmahc  $2.00 M-81 Batavus/Trac M56, sm Bosch 0212 010 004 flywheel
2.5 x 3.0 x 9.0 ∅10 derefmahc  $2.00 M-83 Garelli 2-spd 271.018.00, CEV 6939 flywheel
2.5 x 3.1 x 9.2 ∅10 chamfered   N/A    M-00 Morini #12-7025 MO1,MO2,M1   use M-83
2.5 x 3.6 x 9.6 ∅10 derefmahc  $2.00 M-82 Derbi ’76-86 Motoplat & ’86-89 CEV flywheels
3.0 x 3.0×10.2 ∅13 chamfered   N/A    M-95  shorter and longer
3.0 x 3.7 x 9.6 ∅10 derefmahc   N/A    M-00 Minarelli #4720, CEV 6932 flywheel   use M-85
3.0 x 3.6 x 9.5 ∅10 derefmahc  $2.00 M-85 Puch #900.4503, big Bosch flywheel
3.0 x 3.6 x 9.5 ∅10 derefmahc  $2.00 M-85 Sachs 505 big Bosch flywheel
3.0 x 5.0×12.3 ∅13 chamfered  $5.00 M-96   pre-’78  Vespa #267 flywheel & rear clutch
3.0 x 5.0×12.3 ∅13 top beveled $2.00 M-96a post-78 Vespa #267 flywheel & rear clutch
3.0 x 5.0×12.3 ∅13 derefmahc  $1.50 M-86 Puch 1-sp clutch
3.0 x 5.0 x12.3 ∅13 derefmahc  $2.00 M-86 Batavus M48 big Bosch flywheel
3.0 x 5.0 x12.3 ∅13 derefmahc  $2.00 M-86 Batavus/Trac M56 clutch
3.0 x 5.0 x12.3 ∅13 derefmahc  $2.00 M-86 Kinetic flywheel & rear pulley
3.0 x 6.5×15.5 ∅16 derefmahc   N/A    M-88 Batavus/Trac M56 rear pulley
3.0 x 3.5? 13.2?∅16 derefmahc   N/A    M-00 Honda Hobbit flywheel, can grind an M-86
4.0 x 5.0×12.5 ∅13 derefmahc   N/A    M-89
4.0 x 5.5×18.0 ∅19 derefmahc   N/A    M-100
4.0 x 6.5×15.4 ∅16 derefmahc   N/A    M-90 Garelli 217.036.00 2-spd primary shaft
4.0 x 6.5×15.5 ∅16 chamfered   N/A    M-97
round (roller)  ∅3 x 4 xxxxxxxx  $5.00 M-00 Tomos 200048 all years, all flywheels
straight 5.0 x 5.0 x 12.0 xxxxx  $2.00 M-00 Tomos 044835 countershaft key (race track shaped)

 

 


3   E N G I N E    N U T S

Welcome. These are the engine nuts that go on rotating shafts, rather than stationary nuts, like the head nuts. For head nuts see Engine Top End. Some are very specific and others are more universal.   

 

___________________8 mm N U T S__________________
M8x1             plain nut   M8-1.00 x 8 RH hex13   $2  Sachs 504, Batavus/Trac M56 flywheel nut
3618446       flange nut M8-1.00 x 9 RH hex12   n.a.  Garelli 000.361.8446 1974-76 1-sp flywheel nut
M8x1.25        plain nut   M8-1.25 x 8 RH hex13   $2  Vespa Ciao (non-variator) clutch nut
continued                                                                    Vespa rear pulley nut, var & non-variator
Vespa            thin nut    M8-1.25 x 7 RH hex24   n.a.  Vespa Bravo/Grande/Si variator nut
Morini            thick nut   M8-1.25×16 RH hex15 $10  Morini MO1,MO2,M1, Dansi flywheel nut
00 20 161     plain nut   M8-1.25 x 8 LH hex13   n.a.  Odyssey (Solo) flywheel nut
___________________9 mm N U T S__________________
4430             plain nut  M9-1.00 x 6 RH hex14    $4  Minarelli (early) stub plane clutch
5040             castle nut M9-1.00 x 6 RH hex14   n.a.  Minarelli clutch (before 1978) stub plane clutch
6270             flange nut M9-1.00×12 RH hex14  $17  Minarelli clutch (1978 to Sep 79) early cone clutch
2050118446  flange nut M9-1.00 x 9 RH hex12   n.a.  Garelli 205.011.8446 1977-on 1-sp flywheel nut
substitute          tall nut M9-1.00 x 9 RH hex12    $7  Garelli horizontal 1-speed
___________________1 0 mm N U T S__________________
????              thin nut    M10-1.00 x 6 RH hex14   $8  Derbi 1976-86 variator/clutch nut
????              thin nut    M10-1.00 x 6 RH hex17   $4  Sachs 504 & 505 and Batavus M48 clutch nut
4840             thin nut    M10-1.00 x 7 RH hex17   $3  Minarelli sprocket nut
49812           flange nut M10-1.00 x 7 RH hex21   $7  Peugeot clutch nut
9012943       flange nut M10-1.00 x 8 RH hex14   $5  Puch flywheel nut
M10x1           plain nut  M10-1.00×10 RH hex17   $2  Sachs 505 flywheel nut
continued                                                                     Batavus M48 flywheel nut
continued                                                                     Solo (Colombia) flywheel nut
continued                                                                     Solo (Odyssey) and Solo (Colombia) clutch nut
continued                                                                     Puch 1-spd clutch nut
continued                                                                     Batavus/Trac M56 rear pulley nut
143195         special      M10-1.00×12 LH hex32 $10  Motobecane flywheel 1980-later
17429           special      M10-1.00 LH square 10 $12  Motobecane flywheel 1974-1979
003158446   thick nut   M10-1.00×14 RH hex14   $7  Garelli 2-spd 00315.8.446, flywheel nut
0F02600401  plain nut   M10-1.00 x 8 LH hex14 $12  Derbi rear pulley 1986-91
continued                                                                      Derbi flywheel 1986-91 “Start” engine
46768           thick nut  M10-1.00×15 RH hex16   $7  Peugeot flywheel nut
????              thick nut  M10-1.00×18 RH hex17   n.a.  Derbi flywheel 1976-1985
0F02610401 special     M10-1.00×30 LH hex17   n.a.  Derbi clutch 1986-91 “Start” flat case reed
????              plain nut  M10-1.25 x 8 RH hex14   $2  Honda PA50 clutch and flywheel nut
H210-00-50  plain nut  M10-1.25 x 8 RH hex14   $3  Indian flywheel nut
6275             plain nut  M10-1.25 x 6 LH hex15   $1   Minarelli clutch (after Sep 1979) cone clutch
4750             thick nut  M10-1.25×14 RH hex15   $7   Minarelli flywheel nut
___________________1 1 mm N U T S__________________
17454           flange nut M11-1.00 x 8 RH hex14   $6  Motobecane clutch nut (non-var)
17455           special      M11-1.00×21 RH hex14 $12  Motobecane clutch nut (variator)
___________________1 2 mm N U T S__________________
????               thin nut   M12-1.00 x 7 RH hex19   $3  Garelli clutch nut
????               thin nut   M12-1.00 x 7 RH hex19   $3  Sachs sprocket nut
????               thin nut   M12-1.25 x 6 RH hex17   n.a.  Morini MO-1 sprocket nut
????               thin nut   M12-1.25×10 RH hex19   $3  Batavus/Trac M56 sprocket nut
___________________1 4 mm N U T S__________________
????               thin nut   M14-1.50 x 5 RH hex19   $8  Derbi rear pulley 1976-1986
___________________1 6 mm N U T S__________________
9022922        thin nut   M16-1.50 x 8 RH hex24   $7  Puch 2-spd clutch nut

 


4.  W A S H E R S   a n d   S H I M S

10 x 16 x 2

Shim (precision) washers, in blue, are always required. They are all the same size for every machine.
Adjustment s
him washers, in black, are “as required”. There are different sizes for each machine.

05.1 x 11.5 x 0.5.00  0.0.0.000 G369 $1.50 Benelli start clutch

10.1 x 16.0 x 2.00  0.0.0.0.223469 $3.00 Tomos A35-A55 2-speed trans cover, rear
10.1 x 14.0 x 0.20  0.0.0.0.209075 $5.00 Tomos A3-A35-A55 2-spd trans cover, rear
10.1 x 14.0 x 0.50  0.0.0.0.209076 $5.00 Tomos A3-A35-A55 2-spd trans cover, rear
10.1 x 18.0 x 1.00  0.0.0.0.175751 $2.00 Piaggio variator hub with helical gears
10.1 x 20.0 x 0.60  321.1.13.637.1 $7.00 Puch ZA50 2-speed trans cover, rear
10.1 x 20.0 x 0.80  350.2.13.642.1 $8.00 Puch ZA50 2-speed trans cover, rear
10.1 x 20.0 x 1.00  321.2.13.637.1 $7.00 Puch ZA50 2-speed trans cover, rear
10.1 x 21.8 x 0.80  0.0.0.0.0. 4830 $5.00 Minarelli V1 1-speed sprocket, under nut
10.1 x 22.0 x 0.60  0.0.0.00.  5030 $5.00 Minarelli V1 1-speed clutch, under nut
10.1 x 24.0 x 0.80  0.0.0.0 491088 $5.00 Laura M56 drive shaft
10.3 x 22.4 × 1.20  0.0.0.0 120214 $3.50 Vespa-Piaggio rear var-clutch

14 x 20 x 2

12.1 x 16.0 x 0.1 0000000 0000000 N/A    Kreidler clutch drum
12.1 x 16.0 x 0.2 0000000 0000000 N/A    Kreidler clutch drum
12.1 x 16.0 x 0.3 0000000 0000000 N/A    Kreidler clutch drum
12.1 x 17.0 x 0.4 
0.0.00.0.0  5730  N/A    Minarelli V1 1-speed idler shaft
12.1 x 23.5 x 1.0 0000000 103556 $2.50 Vespa front pulley-clutch
12.1 x 24.0 x 0.5 0000000 480899 $7.00 Laura M48 clutch washer (25 & 30mph)
12.1 x 24.0 x 0.8 000000  480899a $5.00 Laura M48 clutch washer (as required)
12.05×23.95×0.5  000000 490814 $7.00 Laura M56 clutch washer
12.05×23.95×0.8  000000 490813 $5.00 Laura M56 clutch washer (as required)

15×21.7x.5

13.9 x 24.0 x 1.0 0.0.0.0.175747 $2.00 Vespa variator rear hub, after 1980
13.7 x 28.0 x 1.0 0.0.0.0.103386 $7.50 Vespa variator rear hub, before 1980

14.1 x 20.0 x 2.00  0.0.0.0.223468 $4.00 Tomos A35-A55 2-speed clutch, inner

15.2 x 20.0 x 0.08  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.13  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.20  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.30  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.50  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 0.80  0.0.0.0.000000 $4.00 unknown app
15.2 x 20.0 x 1.00  0.0.0.0.000000 $4.00 unknown app
15.2 x 21.7 x 0.50  0.0.0.0.014562 $4.00 Motobecane clutch, variator and 1-speed
15.2 x 21.7 x 0.10  0.0.0.0.014931 $$.$$ Motobecane clutch, variator and 1-speed
15.2 x 21.7 x 0.25  0.0.0.0.014932 $$.$$ Motobecane clutch, variator and 1-speed
15.2 x 21.7 x 0.45  0.0.0.0.014933 $$.$$ Motobecane clutch, variator and 1-speed

15 x 22 x 0.8

15.2 x 22.0 x 0.60  321.1.13.627.1 $8.00 Puch ZA50 2-speed trans cover, front
15.2 x 22.0 x 0.80  321.2.13.627.1 $7.00 Puch ZA50 2-speed trans cover, front
15.2 x 22.0 x 1.00  321.3.13.627.1 $8.00 Puch ZA50 2-speed trans cover, front
15.2 x 22.0 x 1.10  0.0.0.901.3963 $9.50 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 1.30  0.0.0.901.3929 $8.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 1.50  0.0.0.901.3924 $5.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 1.70  0.0.0.901.3930 $5.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 1.80  0.0.0.901.3028 $3.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 1.85  0.0.0.901.3972 $3.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 1.90  0.0.0.901.3942 $2.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 1.95  0.0.0.901.3973 $2.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 2.00  0.0.0.901.3970 $5.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 2.10  0.0.0.901.3049 $5.00 Puch E50 1-speed clutch, outer
15.2 x 22.0 x 2.20  0.0.0.901.3971 $5.00 Puch E50 1-speed clutch, outer
15.2 x 28.0 x 1.20  0.0.00 .131514 $2.00 Vespa rear hub, var and non-var
15.4 x 20.8 x 0.50  0.0.00 .113681 $5.00 Vespa crankshaft washer, 1 per side

 

16 x 24 x 0.50

16.2 x 26.0 x 0.60  0.0.0.000 5790 $5.00 Minarelli V1 pedal shaft
16.2 x 23.5 x 0.60  0.0.0.0.103557 $2.50
Vespa front pulley-clutch
16.2 x 24.0 x 1
.00  0.0.0.0.206391 $3.00 Tomos A3-A35-A55 2-spd pedal shaft
16.2 x 24.0 x 0.20  0.0.0.0.209087 $$.$$ Tomos A3-A35-A55 2-spd pedal shaft
16.2 x 24.0 x 0.50  0.0.0.0.200175 $$.$$ Tomos A3-A35-A55 2-spd pedal shaft

16.2 x 27.8 x 1.00  321.1.13.624.1 $9.50 Puch ZA50 2-speed main shaft, inner

16.2 x 30.0 x 0.40  0.0.00.0.45818 $$.$$ Peugeot 102-103 clutch
16.2 x 30.0 x 0.60  0.0.0.00.45819 $$.$$ Peugeot 102-103 clutch
16.2 x 30.0 x 0.80  0.0.0.00.45820 $$.$$ Peugeot 102-103 clutch
16.2 x 30.0 x 1.00  0.0.0.00.45821 $$.$$ Peugeot 102-103 clutch

16.2 x 32.0 x 2.00  ..200001.7.187  N/A   Garelli H1/H2 pedal shaft

16 x 30 x 1.00

17.2 x 24.0 x 0.10  0.0.0.0.212957 $5.00 Tomos pre-1986 A3 crank, left or right
17.2 x 24.0 x 0.15  0.0.0.0.212958 $8.00 Tomos pre-1986 A3 crank, left or right
17.2 x 24.0 x 0.20  0.0.0.0.212959 $9.00 Tomos pre-1986 A3 crank, left or right
17.2 x 24.0 x 0.50
17.2 x 24.0 x 1.10  0.0.0.901.3943 $9.50 Puch E50 1-speed clutch, inner
17.2 x 24.0 x 1.30  0.0.0.901.3927 $7.00 Puch E50 1-speed clutch, inner
17.2 x 24.0 x 1.50  0.0.0.901.3923 $7.00 Puch E50 1-speed clutch, inner
17.2 x 24.0 x 1.70  0.0.0.901.3928 $5.00 Puch E50 1-speed clutch, inner

18.2 x 24.0 x 0.05  0.0.0.900.3992 $9.50 Puch ZA50 2-speed crank, left
18.2 x 24.0 x 0.10  0.0.0.900.3922 $8.00 Puch ZA50 2-speed crank, left
18.2 x 24.0 x 0.20  0.0.0.900.3923 $9.50 Puch ZA50 2-speed crank, left
18.2 x 24.0 x 0.30  0.0.0.900.3907 $4.00 Puch ZA50 2-speed crank, left

18.5 x 24.0 x 0.12
18.5 x 24.0 x 0.20
19.0 x 22.7 × 0.80  0.0.0.0 120215  N/A   Vespa-Piaggio rear var-clutch

19.2 x 25.8 x 0.10  0.0. old209073 $7.00 Tomos A3 2-speed clutch
19.2 x 25.8 x 0.20  0.0. old209119 $7.00 Tomos A3 2-speed clutch
19.2 x 26.0 x 0.30  0.0.0.0 209073 $5.00 Tomos A35 2-speed clutch
19.2 x 26.0 x 0.50  0.0.0.0 209119 $4.00 Tomos A35 2-speed clutch

22 x 29 x 0.5

20.0 x 29.0 x 0.5  0.00.0.00 69280 $5.00 Leleu front wheel hub dust ring
20.3 x 33.0 x 1.2  0.00.0.0 131513 $2.50 Vespa rear hub, var and non-var

21.0 x 27.0 x 0.10  0.0.00.0.25892 $8.00 Puch ZA50 2-speed crank, right
21.0 x 27.0 x 0.20  0.0.00.25892.2 $7.00 Puch ZA50 2-speed crank, right

22.0 x 29.0 x 0.5  0.00.0.00 69680 $8.00 Leleu rear wheel hub dust ring

23.3 x 34.0 x 0.5  0.00.0.0 131512 $2.00 Vespa rear hub, var and non-var

27.0 x 39.9 x 0.30  0.0.0.0. 37742 $8.00 Peugeot 102-103 case, right
28.0 x 46.9 x 0.40  0.0.0.0. 37034 $7.00 Peugeot 102-103 case, left

 


S P E C I A L   S H A P E S

Peugeot washer

Puch thrust plate

thrust plate 4.2  321.5.13.6471 $$8 Puch ZA50 2-speed main shaft
thrust plate 4.4  321.1.13.6471 $$8 Puch ZA50 2-speed main shaft
thrust plate 4.6  321.2.13.6471 $$8 Puch ZA50 2-speed main shaft
thrust plate 4.8  321.3.13.6471 $$8 Puch ZA50 2-speed main shaft
thrust plate 5.0  321.4.13.6471 $$8 Puch ZA50 2-speed main shaft
thrust plate 5.2  321.6.13.6471 $$8 Puch ZA50 2-speed main shaft

thrust washer 1.5  0.0.0.45795 $$8 Peugeot 102-103 clutch, variator & 1-spd
thrust washer 1.8  0.0.0.47610 $$8 Peugeot 102-103 clutch, variator & 1-spd

 

 

 


5.  C I R C L I P S

Circlips are circular clips. Officially they are known as retaining rings. The “size” is not the actual size, but rather the size of the shaft or hole that it is for. For external rings, the shaft size “For OD” is more than the groove OD, which is more than the actual ring ID. For internal rings, the hole size “For ID” is less than the groove ID, which is less than the actual ring OD.

There is a “click” sound when the spring-loaded clip-ring snaps into the clip-ring groove. The ring should be free to rotate, but with some friction from the spring tension. If the ring is too big it will rotate with no friction. If the ring is too small it will have to be over-stretched to get on, and will rotate with much friction. That’s how to tell if a clip-ring fits properly, by feeling, hearing and seeing.


External Retaining Ring

External Retaining Rings “circlips” or “snap rings”

10 x 1.0  $2.00 Puch #900.4610, 1-speed clutch
10 x 1.0  $$.$$ Derbi #00.471.10, seat hinge pin

12 x 1.0  $2.00 Batavus #841505, M56 right crank shaft end

13 x 1.0  $2.00  Sachs #0245.121.000, 504, 505 main shaft

14 x 1.0  $1.00 Minarelli #6000, V1 after Sep 79 with cone clutch

15 x 1.0  $1.50 Puch #900.4619, 1-speed clutch outer  
15 x 1.0  $$.$$ Minarelli #4860, V1 right drive shaft
15 x 1.0  $$.$$ Derbi #00.471.15, 75-86 Variant drive shaft
15 x 1.0  $$.$$ Benelli #90.27.10.15, 75-80 Benelli G2

16 x 1.0  $2.00 Puch #900.4616, drive sprocket
16 x 1.0  $$.$$ Motobecane #14158, pedal shaft outer, before pulley
16 x 1.0  $$.$$ Tomos #032073, pedal shaft

16 x 1.5   N/A   Sachs #0245.020.001, 505 pedal shaft

17 x 1.0  $2.00 Puch #900.4617, 1-spd and 2-spd clutch inner

20 x 1.0  $2.00 Tomos #032077, 2-speed counter shaft

26 x 1.2  $2.50 Vespa #006426, front clutch non-variator outer side

 


Motobecane 14561

Motobecane 16566

Inverted External Retaining Rings

13 x 1.0  $2 Motobecane

15 x 1.0  $2 Motobecane #14561, left crankshaft var. and non-var.

16 x 1.0  $2 Motobecane #16566, pedal shaft inner, after pulley

 

 


E-clips for jet needles

Side-Mount External Retaining Rings “E-clips”

1.4-2 x 0.3  $1 for 1.2 groove, this is Myrons smallest item!

2-2.5 x 0.4  $2 for 1.5 groove, Dellorto PHVA needle, 2.0 mm

2.5-3 x 0.5  $1 for 1.9 groove,

3 – 4 x 0.6  $1 for 2.3 groove,

4 – 5 x 0.6  $1 for 3.2 groove, Bosch M19A points pivot post

Side Mount External Retaining Rings

5 – 7 x 0.7  $1 for 4.0 groove,

6 – 8 x 0.7  $1 for 5.0 groove,

7 – 9 x 0.7  $2 for 6.0 groove, Puch #900.4606, 1-spd starter shaft
7 – 9 x 0.7  $2 for 6.0 groove, Derbi #00.473.08, clutch shoes

While the other clips are named by the shaft size, these E-clips are often named by the groove size. Since they install from the side they don’t have to spread over the shaft. So the shaft size does not matter. Puch calls the “7-9 x 0.7” e-clip “BZ-circlip 6”. The groove is 6.0mm but the shaft is 7.6mm.

 


Low-Clearance Side-Mount
External Retaining Ring

Low-Clearance Side-Mount External Retaining Rings “C-clips”

14 x 1.0  $2 Puch #900.4766, 1-speed starter shaft

 

 

 

 

 


Internal Retaining Ring

Internal Retaining Rings “inner circlips”

12 x 1.0  $2.00 Peugeot #22309, piston clip

15 x 1.0

25 x 1.2  $2.50 Vespa #000674, front clutch non-variator inner side

32 x 1.2  $5.00 Derbi #00.472.32, clutch hub-drum

35 x 1.2  none   Benelli #90.27.20.35, left crankshaft

Garelli 275.955.00

40 x 1.7  $5.00 Puch #900.4740, 2-speed drive shaft
40 x 1.7  $5.00 
Garelli #000315.1.193, vert. 2-sp left crankshaft

42 x 1.7  $5.00 Batavus #841512, Laura M48 left crankshaft
42 x 1.7  $5.00
Garelli #274.030.00, vert. 2-sp right drive shaft

49 x 1.2  $5.00 Garelli #275.955.00, horizontal 1-speed clutch
49 x 1.2  $5.00 the installed outer diameter is 49, the free OD is 50

 

 


Motobecane 14563

Inverted Internal Retaining Rings

22 x 1.0  $2 Motobecane #14563, var. and non-var. clutch-pulley

24 x 1.2  $3.00 Vespa #16702, rear var. clutch-pulley 

40 x ?.? $5 Puch #901.4656, 1-speed drive shaft

 

 


Puch 900.4635

External C Rings

05 x 0.80   $1.50 Puch #900.4635  1-speed start clutch center pin (4.4 x 0.8 x 6.0mm)

 

 

 

 

 

 


6.  V A R I A T O R  P A R T S

Table of Variator Rollers

Diam. Length Qty  Application
  15.0     18.0     3   Honda PA50I and PA50 II
 
  14.0     14.0     6   Honda Camino (Non US)
 
  14.4     14.0     5   Vespa Ciao, Bravo, Grande, Si
 
  14.6     19.6     3   Derbi 1974-1986
 
  14.0     13.0     ?   Morini M101
 
  14.0     13.0     6   Malossi variator for Motobecane
 
  15.0     12.0     3   Aftermarket guide Motobecane (instead of balls)
 
  16.0     13.0     ?  Malossi, Polini, TJT, DR (and many chinese scooters)

 

 

 

 

Now, do you feel like an engine nut?

 

Shaun has been organizing moped parts since 1986, when he made this seal and bearing chart on his Commodore 64. This actual paper was in daily use for 26 years.

Shaun has been organizing moped parts since 1986, when he made this seal and bearing chart on his Commodore 64. This actual paper was in daily use for 26 years, at Royal Cyclery and Myrons Mopeds!