Bing 54 main jets, Bing idler jets, Bing jet needle, Bing needle jets

Below are descriptions and images of the BING main jet, idler jet, needle jet, jet needle, jet clip and advisories on some updates and modifications that if used properly can result in safer operation of your ultralight, experimental amateurbuilt or light sport aircraft.

The main jets on the Bing carb are replaceable. It is recommended that they be replaced if they are found to be plugged. 

This can happen when the carb is left with fuel in it for long periods of time. The fuel turns to sludge which plugs the jet. 

In this situation it is NOT recommended that the jet be cleaned and reused. 

Main jets start at #120 increasing in increments of 5 to #220

- Exceptions are #142/148/152/158/162 

The idler jets on the Bing carb are replaceable. It is recommended that they be replaced if they are found to be plugged. this can happen when the carb is left with fuel in it for long periods of time.
The fuel turns to sludge which plugs the jet. In this situation it is NOT recommended that the jet be cleaned and reused.
Idler jets start at #30 and increase in increments of 5 to #70

Note on the 582 and 503 DUAL carb Rotax engines we have found that a decrease in the idler jet size provides a smoother engine idle.

We have found that on the 582 Rotax switching to a larger needle jet helps prevent hot spots in the engine between 5200 and 5800 rpm.

 It also helps prevent engine surging in the same range on the 532 Rotax.

The jet needle and clip should be inspected on a regular basis for wear. Wear occurs in the area where the clip rides. Failure of the clip and or needle will cause the needle to:
A) lower itself causing a LEANER fuel mixture or
B) the needle will fall down into the bottom of the carb causing loss of power.
C) cause erratic engine performance as the needle bounces up and down.
Needle clip part # 963 500 (3)
Bing Carb advisory - needle and clip failure! 
Click on IMAGES for larger view of parts.

Sieve Sleeve (Screen),  Top O Ring, Cable Grommet, Hinge Pin, Float Needle, Bowl Gasket,  Jet Needle Ring