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Thanks a million. the link you recomended was perfect the valves where tight I adjusted them to spec and my bike fire right up. thanks again

Thanks, yest the plugs are centraly mounted in the top behind the little plastce chrome covers ther is only one exaust port as the 2 carbs attach to a y witch goes into one intake port, I think the...

it had good spark good compresion and gas it tries to run but just won't quite get ther. How do I go about checking the valves is there a diagram or manual somewhere to show me how to do this?.
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thanks for the fast response. it's the 253FMM-C with twin carbs any other info would be apreciated thanks again

Didn't get to pics but the engine is a 250 twin 4 stroke ohv, don't know if this will help any thanks again

I'll snap some pics and post them later today

thanks

it is push rod thanks for you response

mark

checked the compression all is good, had another guy I know say he had timing issues with his, I'll snap som pics today thanx

can anyone tell me how to set the timming on my shineray 250 atv, three marks on the crank but don't know where they need to line up, i have heard that this particular quad has issues with timing...

I tried the wd-40, havn't checked the compression yet. I was told to check the timong anyone know how to go about this?

I just bought a used 250 shineray atv, Has spark getting feul but will not start, turns over and tries real hard but no go. I cleaned the carbs and changed the plugs but nothing. The guy I bought it...