Bing is a German carburetor manufacturer now named BING Power Systems GmbH located in Nuremberg. The company was founded in 1866 and has a tradition of 75 years of carburetor development and production. Over the years BING took over companies like Erich und Grätz, Fischer-Amal, Pallas, Encarwi , FHN. In 2001 the company S.U. ( Skinner Union ) Birmingham was taken over by BING Power Systems GmbH.

Bing carburetors can be found on various moped brands including Batavus, JCPenney Pinto, Hercules, Kreidler, Kromag, NSU, Puch, Sachs, Solo, Tomos, Zundapp and others.

Got a leaky Bing? Have no fear, just click here.

Bing Part Numbers

On Bing carburetors, the middle number is size of the carb. For example, a 1/12/294 is a 12mm carb. A 1/14/152 is a 14mm carb. A 1/15/46A is a 15mm carb. A list of part numbers for Puch Bing carburetors with specific model information and/or a list of stock mopeds they are found on:


Stock on Puch Maxi 1.5 HP, main jet 60


Stock on Puch Maxi and Puch Maxi Luxe 1 HP, main jet 52


Stock on Puch Sport MKII and Puch Newport 1 HP, main jet 48


Stock on Puch Maxi Luxe 2 HP, main jet 58


Stock on Puch Maxi Luxe 1.5 HP, main jet 48


Stock on Puch Maxi Sport MKII, Maxi Luxe II HT 2 HP, and Newport II 1.5 HP, main jet 56


Stock on Puch Magnum XK 2 HP, main jet 64


Stock on Puch Magnum XK 1.5 HP, main jet 50


Stock on Puch Magnum XK and MK II 1 HP, main jet 50


Stock on Puch Sport MKII and Newport 1.5 HP, main jet 50


Stock on Puch Magnum MKII 2 HP, main jet 60


Stock on Puch Magnum MKII 1.5 HP, main jet 48


Stock on Puch Maxi 2 HP, main jet 64


Stock on Puch Maxi 2 HP, main jet 64


Stock on Sears Free Spirit 2 HP, series B and some murray models, main jet 68


Aftermarket Carb for Puch, main jet 82


Stock on Sears Sabre, main jet 84 all metal float needles are OEM. Main jet 90 are common

For more information see the Bing "Tuning Manuals" (carb factory configuration database) page at

Sachs Bing Part Numbers

Sachs mopeds use a square Bing carburetor which differs slightly (other than the shape, obviously) from the round (Puch) Bing. Please note that SQUARE BING JETS ARE NOT THE SAME SIZE AS ROUND BING JETS. Square Bing jets are considered to be rare and hard-to-find. Most people get around this obstacle with one of the following options:

  • Substitute a round Bing for the square Bing (may require some modification to work)
  • Drill the jets by hand

See this thread for more info and comparisons between the Puch and Sachs Bing carbs.

Part Numbers
85/10/101 A

Stock on restricted 25mph Sachs models, generally accompanied by a small exhaust header pipe. Main jet #50

85/12/101 A

Stock on nearly all Sachs 504 and 505 motors; Westlake, Balboa, Hercules, etc. Main jet #52

85/12/104 A

Stock on certain 505 D cylinders; Generally Balboa's; rare. Known for its lack of throttle needle, and improved performance. Main jet #58

85/13/101 A

Infamous for existing, but virtually unheard of on U.S. market bikes. Extremely rare.

Solo Bing Carburetor


1/10/112 Type SRB

This is the only carburetor used on the US imported Solo's. It has both a spin off bowl and slide cover. similar to some "race style" motorcycle carburetors. It's small 10mm bore limits it's usefulness for performance applications. This same carburetor was sold from the factory bored out to 11mm. A 12mm bore is safe as well. Anything over 12mm will result in the fuel bowl vent circuit to become exposed. This can be fixed with epoxy. Theoretically it could be bored to a 14mm, although the slide it self is only 14.5mm and leakage of air around the slide would be likely.

Part Numbers

Stock Main Jet #44-021/58

This is the same jet as the one used on the common Puch bing carburetor. An entire range of larger jets are available.

Stock Needle #46-031

This is the only needle produced for this carb.

Stock Needle Jet ## 45-141/2.12

A range of sizes are still available.

Bing (Puch) Carburetor Diagram


Based on diagram from

Bing (Sachs) Carburetor Diagram

Sachs carb.PNG

Based on diagram from Sachs Manual

Setting Bing Float Height

To properly set the float level remove the float bowl and invert the carburetor. The float is properly ad- justed when the top edge of the float is parallel with the gasket surface of the float bowl on the car- buretor body. This setting is very important and should always be checked when mixture problems are encountered.

Incorrect float height setting
Correct float height setting

Setting Bing Needle Height

How bing needle works improved.JPG

Additional Links


Parts Information

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