To add a handle for better grip of the fresh air vents I drilled a 4mm hole and used two spark plug caps. These are the caps we remove from the Rotax NGK DCPR8E spark plugs. They have an internal 4 x .07 thread. Drill […]
Engine
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Carburetor Vent Line Reposition
The Bing 64 carburetors on the 912ULS use atmospheric pressure sensing to control a diaphragm that moves a needle within a jet to adjust for rich or lean. The vent tube that comes off the carburetor bowl needs to sense the same atmospheric pressure that […]