Hi guys.. Since some weeks, I started noticing that my 400 ex make some kind of acute sound coming from the motor or the clutch case... It was doing it sometimes, now it is doing it more and more only when the clutch is engaged, when I pull the clutch, it stops. I seems to do it only when reving the motor and when the clutch is engaged.. it does it as long as I keep the throttle on and the clutch engaged. It does it especially when in 3rd gear and UP

I have no idea what it could be... Any suggestion? Could it be the clutch itself? or anything else?

Louis

 

Mine sometimes makes a low-pitched winey mechanical noise from the slutch side when it isnt warmed up and sometimes when it is. This is only at idle. Is this a trait with the ex?