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clutch transmission

  1. 2008 YFZ 450 HELP please

    Yamaha YFZ450/450R (2004-Present)
    I just bought this quad. When I take off the motor and everything sounds fine and starts easy but when I get to the high RPMs it feels like it is spinning the tires and not taking off like it should. It won't wheelie just feels like it falls out when you get pasted half throttle in every gear...