Re: Q jet primary jetting?
Mike,
The piston can be left in the carb with the rods removed, but that still leaves you with the potential to tear the top gasket when working on the carb. I would recommend either plugging the piston bore with a "freeze plug" type plug or with a shallow 3/8" setscrew. That way you don't have to worry about damaging the top gasket when you are removing or installing it around the power piston which no longer serves any function with the rods removed.
Dean
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