Joining the carburetor to the intake manifold, on the 532 Rotax engine is a Mikuni rubber intake manifold adapter. Two problem areas have been reported with this rubber intake manifold.
The first area is that directly under the clamp used to tighten the rubber manifold to the carb body. It is difficult to locate, since the pilot must remove the carb, and clamp and closing inspect the area.
What has been found is separation or tearing of the rubber. This generally causes erratic running, hard starting, and possible engine failure caused by the leaning of the mixture.
Brand new genuine Bing 54 Carburetor equipped with the proper jetting for your engine (70deg F at sea level unless requested otherwise). Available with a standard lever choke, or a remote choke fitting (photo shows remote choke fitting). This is the standard carb on most Scat hovercraft.Please note that there is some lead time on this carb. Aug 19, 2011 This e-Learning video covers servicing and overhauling a Bing 54 carburetor on a Rotax 2 stroke aircraft engine. Watch a complete carburetor tear down, inspection and rebuild. Subscribe at http. BING TYPE 54 CARBURETOR REBUILD KIT #7 Air Screw O Ring, #10 Sieve Sleeve (Screen), #17 Top O Ring, #21 Cable Grommet#25 Hinge Pin, #26 Float Needle, #29 Bowl Gasket. Bing carburetors for motorcycles, mopeds, boats, chainsaws, jackhammers and more this web site is specific for motorcycles only if you have an aircraft or another engine with a bing carburetor call us at 800-309-2464 we can assist you.
The other area of separation is located around the bolt holes used to connect the rubber flange to the intake manifold. Although his area is easier to inspect, it still must be looked at very closely to find the separation.
This separation has been reported to be caused by the use of regular unleaded fuel with an ethanol additive which has acted on the rubber, an additional factor is the lack of support for the carb body and breather. In most applications these are all supported by this rubber intake manifold.
To help eliminate this problem it is suggested that some way of supporting the carb/breather be found, and that the pilot use premium unleaded fuel.
Most other Rotax engines use a rubber intake tube to join the carb body to the intake manifold, deterioration of this rubber tube due to exposure to UV, and gas has also been reported, and is an area that pilots should check during regular preflight.
Bing 64 Carburetor Manual
Rotax aircleaner advisory
Bing 54 Carburetor Parts
Another reported problem especially in pusher configurations is the air cleaner falling off and coming in contact with the prop. A simple solution is to install a bracket, or clamp, to prevent the airfilter from coming in contact with the prop if it were to come off.
Bing Carb Manual
Air Cleaners: The type of air cleaner used on the Rotax engine greatly effects its performance. In fact the engine will not run properly with some air filters. Many pilots have reported being unable to develop full power after installing the ROTAX AIR BOX silencer kit. This kit when used on the Rotax engine requires the rejetting of the engine.
My personal recommendation is not to use either the silencer kit or after muffler, on any ultralight where performance is marginal, since the use of either reduces performance. Several ultralight manufacturers have shipped their kits out using a sponge air filter. This filter is not recommended for most ultralight applications as it is prone to absorb water, especially during early morning, or after rain.
Most current manufacturers are recommending the use of the K& N filter. This filter when maintained correctly has proven to be one of the best on the market.
Click here for K & N Airfilter Service information