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Hi – relatively new to rebuilding engines and ATV engines in particular – so please go easy on me…

I’ve got a 1986 Trail Boss 250 I recently bought that supposedly would only run when using starter fluid and then ran very rough. So I’ve been taking it apart piece by piece and today I took off the cylinder head and the piston looks like its in rough shape but i’m having a hard time determining if the cylinder walls themselves are a problem.

Since its so old and I have it all apart maybe its worth

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