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  1. YZ-F & YZ
    Have a new '12 450. Bike pulls hard, runs great BUT the bike will not ride at a constant speed. I understand the bike is designed for racing and its accelerates great but when trying to cruise at a constant speed the bikes lurches to the point it wants to buck me off. I think something is...
  2. YZ-F & YZ
    The bike is a 2004 Yz450f. It starts at about 5 kicks and then it runs for about a minute while it runs I give it a little gas. It then cuts out and will start with about 5 kicks and then repeats the same scenario. There is no other known faults to my knowledge other than a crack in the air box...
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