2003 Yamaha YZ 125 Logo
Vincent Violett Posted on Jul 26, 2009
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Yamaha YZ125 Clutch not disengaging

I have a 2002 Yamaha YZ 125 and the clutch is engaged and wont disengage, it is stuck in third gear so I can't even start it. I was wondering if there was some easy way around it? I have taken off the clutch side of the gears and of course it is freed up, when I put the pressure plate back on it gets engaged again, I just bought it off someone that KINDA knows stuff about these bikes and I have been a mechanic for vehicles for about 3-4 years so I know the basics with these bikes... Please let me know if anyone can help...Thanks, Vinny

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tombones

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  • Master 3,567 Answers
  • Posted on Jul 26, 2009
tombones
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Joined: Mar 11, 2009
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I would be more concerned with the stuck gear than the clutch, but we will start with the clutch.

Yamaha YZ125 Clutch not disengaging - 02ccdb2.gif The push cam may be bent or deformed and the push shaft may be bent. Assuming the ball bearing is in place, the cam and rod are all that can really go wrong. The rod slides out of the left center case. You will need to loosen the springs to get the left side cover back in place. Roll the rod on a flat surface to see if it is bent. I fear a bent shift fork is causing the gearbox to be stuck in third. Fix the clutch and then post a comment to get back to me.

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Your clutch is not fully disengaging.Adjust the cable at the lever until you have plenty of free play.Then adjust the cable at the motor until you have full engagement then readjust lever to 3/8 in play.Fine tune at the motor.It may take a few trys but you can get it.
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