Thanks for the how-to .
I am familiar with rebuilding carbs but the older styles do not have a diaphram .
the carb on my honda 200cc has both an idle screw and a mixture screw. turning the mixture screw out richens the mix .
what is the equilvalent screw for the gz250 carb ?
I wonder if adjusting mixture is the 1 st modification that should be made.
I have in the past used a larger main jet with mixture adjustments to compensate for unrestrited air flow and less restricted exhaust on a honda with noticeable performance improvement.
Re: exhaust : less restrictive exhaust also has less back pressure which may result in shortened valve life or burned piston crowns. ( did that in the past )
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sds4
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