2001 Yamaha Wolverine 350 front wheel wobble

[DirtDemon]

While the affected wheels are off the ground, wiggle the wheel back and forth and look at all of the balljoints on the spindle. You should be able to tell where the movement is coming from if you look closely. It is most likely a wheel bearing issue as was already suggested, but if you have worn balljoints, you will need to fix that asap, if they come loose while you are riding fast bad things can happen.