Leaky Carburetor

After a period of use your Zenith Carburetor may develop seepage.  The cause is usually the compressed paper gaskets under the jets in the bowl and under the metering valve, which the float operates.  If this occurs, remove the carburetor and separate the halves.  A 5/16” nut drive will fit the cap jet.  Remove the bottom plug.  Using a common screwdriver, tighten the main jet (next to the cap jet).  Then tighten the compensator jet in the bowl.  Next remove the float pin and float.  Take a 5/8” 6-point socket and tighten the metering valve, 10 foot pounds, using a ½” drive torque wrench, or 150 inch pounds with a 3/8” drive torque wrench.  Re-assemble and use.  If seepage should recur, there may be a small foreign particle holding the needle off its seat in the metering valve.  Remove the metering valve and blow out with air.  If seepage returns, recheck all jets for tightness.  Then check fuel tank, filter and lines for dirt or foreign particles.

This article was printed in the May 2008 issue of the “A” Quail Call.

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