Jut repaired the torque limiter on my fs650 all you need to do is unscrew it use a wood or aluminium vice (bolt has alot of lock tight on it) clean it up where the clutch type material contacts i used wet and dry paper then when reasembling put a hardened shim washer in it under washer that i under bolt head i put. 3 x 1.8 shims in mine but around 1 x .4 in the normal put it back together using lock tight. Mine was free spining with 5nm should be 15 to 25nm. Good Luck