Question about 2003 Yamaha YZ 125

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3 wheeler engine trouble

We just recently obtained a 1980 yamaha trimoto 125 3 wheeler. The engine won't turn over freely, acting like it's siezed up. I have managed to get it to turn over with 2-3 pulls on the starter cable then it locked up again. Thanks for your any help you can give me.

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Hey, my friend john has the same exact model, we run it all the time, i was over his house just this weekend. if you want to make it run better ill tell u how, its really easy. u wanna pull the carberator out and just scrub it with a tooth brush and some wd-40 then spray a little starter fluid in the air filter, give it a new spark plug, and charge the battery. next time u start it, push the electric starter and pull the cord. it should start up like new.

( if that doesnt work, tweak the engine moderator, its the little bronze knob near the little fuel pump switch on the side of the engine, it changes how fast the engine revs. just turn the revs up a little.)
good luck. hope i was helpfull.

Posted on Jun 02, 2009

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Does your starter cable retract all the way?a lot of times it is the cable that is hard to pull.i just finished on a 1983 honda big red and my customer said he had engine troubles,but it was the whole entire pull start housing that was bad.

Posted on Apr 27, 2009

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A “very helpful” rating for this answer? Thanks! < < And it doesn't cost anything extra!

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