A friend let me ride his Grizzly 660 for the 1st time. When I caught some air I noticed a really loud rattling sound coming from somewhere below. I only needed to have the front end off the ground for the rattling to start. As soon as the front end came back down, the rattling stopped. I've never heard a loud rattle in midair before. Any idea what this could be? My friend said that it's rattled like that ever since he owned it (2 years)

Thanks

Dave

 

are the wheels wobbling? he might need new front wheel bearings