I am hearing a "whining" noise coming from the clutch cover on my wife's '06 Polaris Hawkeye 300 (2x4). I have recently changed the belt on it because I thought maybe the belt was rubbing, but that's not the case. There are no marks on the inside of the clutch cover to show that the old belt was rubbing anywhere. I cleaned all the dirt out of the cover, but didn't clean out the clutches. The noise is almost a grinding noise that can be heard when I push on the throttle and then let off. When I let off the throttle, the noise fades away and then can't be heard when it is at idle. I THINK (if I remember correctly) that it would even make the noise when it was in gear OR even if it was in neutral. It has been awhile since I have looked at it, but I don't think it made the noise when I had the clutch cover off. Anyone have any ideas because its driving me crazy. Thanks for any help.