15-05-16, 09:49 PM
That sounds like it could be the bearings in the device in the sprocket cover that pushes on the rod that operates the clutch. It's in an exposed area yet Yamaha totally ignore it from a servicing point of view.
http://foc-u.co.uk/index.php?topic=10124.0
http://foc-u.co.uk/index.php?topic=10124.0