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Mike Peters · 03-29-2020, 07:04 AM

Typically, to start a Model A, you open the GAV a turn or so counterclockwise from completely closed. After warm up, turn it down clockwise to a quarter turn or so to run. I don't know why your previous owner told you not to touch the GAV. It's there for a purpose for fine tuning.

03-29-2020, 07:04 AM	#11
Mike Peters Senior Member Join Date: Aug 2012 Location: South East Wisconsin Posts: 1,279	Re: Spark Plug Condition Typically, to start a Model A, you open the GAV a turn or so counterclockwise from completely closed. After warm up, turn it down clockwise to a quarter turn or so to run. I don't know why your previous owner told you not to touch the GAV. It's there for a purpose for fine tuning.