TK4
Well-known member
The school bikes typically last about half a season - that's with them being constantly slipped mercilessly and most of the time without proper free play. The oil that comes out is grossly contaminated by the clutch friction material which likely hastens the demise.I'm still not even quite sure what the described problem is by the op. If the clutch is toast at 13k, and the lever free play was adjusted at the dealership 4 times, I have no idea what it could be besides user error. The nut on the engine is probably referring to the coarse clutch cable adjuster and the user described issue is that there was too much play.
How can the clutch get burned unless you were pulling in the clutch and slipping it all day long. If anything, it should make it impossible for you to burn the clutch out without having the bike also a) never come to a complete stop or b) never start up/go into gear(clutch sensor) or c) shoot out from underneath you when you turn on the engine.
Did you keep tightening the cable when it 'came lose'? Did you always allow for several degrees of free play as specified in the manual? I just don't see how a clutch cable needs to be constantly adjusted and results in a burnt clutch absent user error.
or maybe its two different issues at the same time. What motor oil did you use on the oil changes?
Both of these factors might apply in OPs case.