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Tom Endy · 12-12-2019, 01:54 PM

Keep in mind that an updraft Zenith carburetor will leak fuel at some time and if you have a filter mounted to it, it may become saturated with fuel. If the engine should backfire on start up because the spark advance lever was left in the down position the filter material may light off.

Tom Endy

12-12-2019, 01:54 PM	#10
Tom Endy Senior Member Join Date: May 2010 Location: Southern California Posts: 3,131	Re: Air Filter Keep in mind that an updraft Zenith carburetor will leak fuel at some time and if you have a filter mounted to it, it may become saturated with fuel. If the engine should backfire on start up because the spark advance lever was left in the down position the filter material may light off. Tom Endy Last edited by Tom Endy; 12-13-2019 at 12:04 PM.