Bing 85 Sachs

bing crown2.  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                   
  0961.151.050 $8.00 4mm jet #50 for 85/10/101 & 101A
  0961.151.052   none 4mm jet #52 for 85/12/101 & 101A
  0961.151.055   none 4mm jet #55 for 85/12/104A
  0961.151.058 $8.00 4mm jet #58 for 85/12/118

2   0261.142.002 $18.0 needle jet 2.17 (not for 104A or 118)
2a 0247.143.000 $7.00 needle jet ring (not for 104A or 118)
3   0261.145.000 $22.0 fuel filter Sachs type
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 $1.50 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 $2.00 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  0000.111.00$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, no slot for metal tip needle
23  0281.125.000 $60.0 22 + 23 + 24  no-slot float+needle
23a 000.111.000  $45.0 float only, slotted for rubber tip needle
23a0281.125.001 $65.0 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 $9.00 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

o-ring #41 is on some

31  0000.111.000 $3.00 primer 
32  0000.111.000 $7.00 spring for primer
33  0000.111.000 $3.00 cotter pin for spring
      0281.109.000 $10.0 31 + 32 + 33 

Sachs Bing carb and air filter assembly

Some Sachs intake pipes have a cut-out for an o-ring. That o-ring is the same as the air box o-ring #41, Ø17 x 1.5

 

Sachs air box front

 

 

 

 

 

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 $15-$20 air box front half      
43  0239.138.000 $5.00 choke slide spring     
44  0225.009.000 $20-$25 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 $45.0 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 $27.0 air box rear  Ø13.5 black for Ø10 carbs
48  0225.010.100 $18.0 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.

Bing Sachs

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

Bing Sachs

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.

Bing Sachs early and late

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.