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Old 08-01-2020, 10:16 AM   #5
Purdy Swoft
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Join Date: May 2010
Location: Alabama
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Default Re: Exhaust pipe question/opinion

On the other hand , lean operation will also cause overheating . Factory specs for GAV adjustment is one quarter turn open on the GAV knob after a brief warm up on a cold engine . If the larger model B carburetor is used the GAV should run completely closed after warm up . Both timing and GAV adjustment have an effect on running temps .
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