2. B I N G S A C H S C A R B S
10 or 12mm clamp size 20mm
Sachs engines for US models:
internal pedals external pedals
Sachs 505/1B Sachs 504/1B 1-spd auto 25km/h (18mph)
Sachs 505/1A Sachs 504/1A 1-spd auto 40km/h (26mph)
Sachs 505/1D Sachs 504/1D 1-spd auto 45km/h (29mph)
Sachs 505/1D Sachs 508/2D 2-spd auto 45km/h (29mph)
Carburetor Jet Slide N.jet Needle Float Price Applications
85/10/101 50 2B 2.17 33mm no slot N/A ’76-79 504,505/1B
85/10/101A 50 2B 2.17 33mm slotted N/A ’79-85 504,505/1B
85/12/101 52 2B 2.17 36mm no slot N/A ’76-79 504,505/1A
85/12/101A 52 2B 2.17 36mm slotted N/A ’79-85 504,505/1A
85/12/104A 58 2 none none slotted N/A ’78-’83 504,505/1D
85/12/118 55 2 none none slotted N/A ’80-’85 504,505/1D
Note that the later 104A and 118 carbs have no jet needle.
# Sachs part # price description
1 0961.151.050 $8.00 4mm jet #50 for 85/10/101 & 101A
1 0961.151.052 $8.00 4mm jet #52 for 85/12/101 & 101A
1 0961.151.055 none 4mm jet #55 for 85/12/104A
1 0961.151.058 $8.00 4mm jet #58 for 85/12/118
2 0261.142.002 $12.0 needle jet 2.17 (not for 104A or 118)
2a 0247.143.000 $8.00 ring Ø3.2 Ø2.1 x 2.5 (not for 104A or 118)
3 0261.145.000 $18.0 fuel filter, good-used only
4 0261.146.000 $15.0 slide #2B Ø14.5 (not for 104A or 118)
4 0261.148.000 N/A slide #2 Ø14.5 only for 104A & 118
5 0261.006.003 $22.0 needle 33mm for 85/10/101 or 101A
5 0261.006.004 $18.0 needle 36mm for 85/12/101 or 101A
6 0261.018.000 $3.00 clip for needle (not for 104A or 118)
7 0244.109.000 $3.00 washer/plate (not for 104A or 118)
8 0239.140.000 $10.0 spring Ø11 x 36mm
9 0250.162.000 $3.00 gasket carb top
10 0261.144.000 $15.0 carb top w/screws
11 0000.111.000 $1.50 screw carb top M4 Bing Puch 10
12 0000.111.000 $12.0 elbow carb M7 long thicker than Puch
12a 000.111.000 $15.0 elbow carb M7 short thicker than Puch
13 0000.111.000 $1.00 locknut M7 x 0.75
14 0000.111.000 $2.50 locknut M6 x 0.75
15 0000.111.000 $5.00 adjuster M6 x 0.75
15 0000.111.000 -N/A– (not trapped within the 2-ended cable)
12 0261.143.000 $15.0 12 + 13 + 14 + 15 long elbow assy
12a 000.111.000 $18.0 12a+13 + 14 + 15 short elbow assy
19 3640.022.002 $3.00 clamp bolt M5 x 20 thin shank
20 0962.065.000 $3.00 idle screw M5x0.8 Bing Puch 16
21 0962.090.000 $3.00 spring for idle screw Bing Puch 17
22 0000.111.000 $39.0 float needle metal for no-slot float
22a2661.027.000 $15.0 float needle rubber for slotted float
23 0000.111.000 $30.0 float only, good-used, no slot for metal tip needle
23 0281.125.000 $60.0 22 + 23 + 24 no-slot float+needle
23a 000.111.000 45-30 float only, slotted for rubber tip needle
23a0281.125.001 65-45 22a + 23a + 24 slotted float+needle
24 0000.111.000 $7.00 hinge pin float bigger than Puch
25 0261.141.000 $10.0 float bowl
26 0240.213.001 $0.70 M4 x 12 slot head
27 0250.161.000 $16.0 gasket float bowl original cork fresh
27 0250.161.000 $7.00 gasket float bowl generic
28 0261.125.000 $10.0 hose fitting/banjo Bing Puch 24
29 0242.110.000 $7.00 cap nut M8 x 0.75 for early versions
30 0962.013.000 $1.00 seal ring M8 (2) Bing Puch 26
31 0000.111.000 $3.00 primer
32 0000.111.000 $7.00 spring for primer
33 0000.111.000 $1.50 cotter pin for spring
0281.109.000 $10.0 31 + 32 + 33
Upper is #12 cable pipe long
Lower is #12a cable pipe short
Left, non-slotted floats and metal tipped needle.
Right, slotted float and rubber tipped needle.
Some Sachs intake pipes have a cut-out for an o-ring.
It is the same as the air box o-ring #41, Ø17 x 1.5
40 0000.111.000 N/A air box complete Ø16 for Ø12 carbs
40a0000.111.000 N/A air box complete Ø13 for Ø10 carbs
41 0250.160.101 $1.50 rubber o-ring 17 x 1.5
42 0225.007.000 $9-$14 air box front half
43 0239.138.000 $5.00 choke slide spring
44 0225.009.000 $20.0 choke plate/slide
45 0224.160.000 $3.00 mount plate metal
46 0240.211.002 $0.50 M5 x 10 slot screws takes two
46 0282.114.000 $29.0 41+42+43+44+45 front half assy
47 0225.008.005 N/A air box rear Ø16 grey for Ø12 carbs
47a0225.008.000 $23.0 air box rear Ø13.5 black for Ø10 carbs
48 0225.010.100 $15.0 air filter/spacer, new
49 0239.139.000 $8.0 wire clip air box
The air filter 48 has a rubber spacer around it. This rubber becomes soft, making the clip looser. Then a bump or jolt causes the air box back half 47 to detach and soon fall off. That is why most are missing 47, 48, 49.
Sachs Choke Cable Trickery: Above, a Sachs Bing carburetor and air filter assembly. First the grey steel plate goes inside the white plastic box front half. Then the two M5x12 screws bolt it to the carburetor. Then the choke cable is fed through the box half, The choke cable spring is slid over the end of the choke cable. Then the white plastic choke plate, at far lower left, is attached to the small barrel end of the choke cable. This is done with the choke cable detached from the lever at the handlebar. When it’s all hooked up, squeezing the choke trigger moves the choke plate forward, blocking off the air. Releasing the choke trigger causes the spring to pull the choke plate back away, allowing full air in for normal running.
85/10/101(or A) 85/12/101(or A) 85/12/104 A
for 504-505 1B for 504-505 1A for 504-505 1D
85/10/101 (or A) 85/12/101 (or A) 85/12/104 A
“A” means slotted float and rubber tip needle.
No “A” means no-slot float and metal tip needle.
101 types channel the idle mixture under the slide. A deeper slide channel makes a richer idle mixture. Fill in the idle channel with epoxy to make the idle mixture leaner. Grind it deeper to idle richer. 104 types have an idle tunnel with a separate fuel hole. A bigger idle hole makes a richer idle mixture.
But it is not removable and not easily serviced. Remember that once the throttle slide is raised up (opened), the idle channel and (to a lesser degree) the jet needle have no more effect. At full throttle only the main jet matters, pretty much.
Left 4 have idle channels and jet needle holes.
Right has no idle channel and no needle hole.
The twin holes joined together are for the cable.
85/12/101 A 85/12/104 A
Left, the 101A needle jet unscrews.
Rt, 104A is molded-in under the jet.
Note the new and used float colors.
Slot Position angle is expressed as the time on a clock. All four slides above have the intake side at 12 o’clock and the engine side at 6 o’clock. Then from the bottom view, “Sachs A and B” is at 3 o’clock, “early Bing” is at 12 o’clock, “Solo” is at 12 o’clock, “Kreidler” is at 10 o’clock, and “Sachs C and D” is at 3 o’clock. Slides that have the same diameter and slot position can interchange, in most cases.