yamaha721sxv
New member
hey guys just was wondering what would make my primary clutch sound likes its knocking? anyone ever hear this?
YAMMIEGOD3:16
Active member
POSSIBLE BROKE,IN SPRING OR WEIGHT FOR STARTERS. 3:16 (yammie tony)
While sled is running or turning it by hand?
Low on Oil, oil light coming on?? 
just kidding of course!
just kidding of course!
If your spring is good, check the side to side play on your weights and spin the rollers to check for flat spots.. Best thing to do is pull clutch off and inspect and clean thoroughly......
yamaha721sxv
New member
ya it knocks when running! ok ill take it off and take a look and clean! thanks
I had a noise that I was convinced was coming out of my primary. After removing and inspecting the clutch...... several times, I found that the rivets popped out of my heat exchanger protectors, and the track was bouncing them off the tunnel.