Question about 1986 Yamaha RD 350

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Quad will not start electricly, and pull start binds?

I have a 1990 Yamaha Warrior 350, Me and a friend rebuilt the top end, with a high comp piston. Shortly after that, something in the starter system went? The starter spins, but will not turn over the motor? I can bump start the quad, but it sounds like the starter is engaging while the motor is running, and the same when I tried to pull start it, which was hard to do, cause the starter spun with the pull? I had the starter tested, it's good to go. I pulled the cover and inspected the first idler gear? It looks fine, but I don't have a puller to check the bigger behind the mag? Do you know what might have caused this problem, and what I should, or can do to fix it? I was told there is a one way bearing behind the mag that might be the culprit?

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  • bikercc May 02, 2009

    hey guys, im rebuilding a warrior, i dont have a starter solenoid yet or anything, but i have the engine and frame and everything else, and when i pull the pull start it turns the starter, and its really hard to turn over cus the starter is grabbing, is this supposed to be like this or what??

  • Anonymous Mar 29, 2014

    pulled off joe hunt mag to do a comp top end job on motor . do i bring to TDC and install mag head back on mag shaft still on. timing gear

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Hello, i agree with johnnyraptor, i have a 2000 warrior, i t has done the same thing,except my bolts didnt break, my one way starter bearing sound like it was sorta dragging, then it would break free, sometimes it would start,then it would just spin, had to pull flywheele, race and bearing is bolted to backside of flywheel, thats the big hex head screws that you see, when looking at flywheele, when you pull stator cover, sounds like you need oneway bearing, make sure not to put on backwards, have seen it done.cheapcycleparts.com has them for about 50.00 to 75.00 dollars, warriors about 60.00 ,mine came from yamaha, 150.00. wish i had found this other place before i bought mine...

Posted on Feb 25, 2010

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Yes that would be the culprit!!!!! Mine went out on my 660 raptor.what really happens is the bearing blows up or your bolts get sheared off. in my case it was the bolts(all 5 of them). first take off the cover for your lower idle gears.then you will see the starter gear,move it with your finger.it should only turn one way.if it trns both ways.then you need to take off the left crankcase cover.and check it out.(i'll put money on it that you broke the bolts.)

Posted on Apr 25, 2009

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