I suppose i'll contact Yamaha and see what sort of a response i get from them.
The thing that worries me at the mo', is that i've already tried to fix the problem, by buying and fitting the new 12mm nut, knowing that the O/S is damaged.
Yamaha could well say that i should have left it alone, once i removed the old nut and saw the damaged shaft, then contacted them about the freebie repair!
Anyway, i'll give them a shout and see what happens.
Thanks guys.
G ; )
Life's a long song....
If your happy its tight and fitting flush then you could always get a couple of tack welds on the nut to the shaft to make sure. At the end of the day you wanna be riding don't ya, if you don't get no joy with yamaha then at least you can be back on the road. Just inspect it every now and then.
I'm a big believer in not spending much on bikes and repairs as I'd rather spend my money on petrol and riding.
The shaft looks quite shiney in the pic so I'd guess the nut mangled the threads as it was coming off. Was the nut quite stiff as it was coming off? I'd did mine recently and I was bricking it taking the nut off. It's definitely the weak point of the fazer.
Wonder if you could re-thread the bugger and make it a bit cleaner to stick the nut on to with a load of locktite,,,
to use an old Quote "Been there, done that, wore the T-shirt".
Nothing worked until I put a circlip outside the Nut then a washer and the allen bolt.
The shaft is case hardened and drilling and tapping the end was not to difficult once you took it slow and gently getting through the case hardening.
Update on my situation: Fitted new chain and sprockets, been for a few long, fast rides and the 12mm nut is still ok.
I've ordered a pair of new Bridgestone tyres and a set of carb - head inlet rubbers, then it's off to the dyno man to have everything set up properly.
I'll post the results of the dyno test when i get them.
G ; )
Life's a long song....
bump
I don't do rain or threat there of. dry rider only with no shame.
A lot of people seem to be asking `should I do this` and ` how do I` etc, Is there a step by step thread on here anywhere that people can follow if they want to change the sprocket nut?
Just fitted 12mm nut on my shaft adding the suggested loctite. tightened to the 70nm which seemed a bit too quick and easy to reach so gave it an extra yank. I was expecting the nut face to end up flush with the shaft end but instead it sits proud of the shaft end. Does this sound right?
Women have chocolate men have bikes.....
including ones who like chocolate....
Depends how much it stands proud. The 12mm nut is usually just proud of the shaft by between half to one millimetre. i.e. about the depth of the chamfer on the nut.
Incidentally when Yamaha introduced us to the 12mm nut they also increased the torque to 90 Nm.
cheers, I'll take cover off again tomorrow and torque it up. May be take a pic too, knowing how pics are liked lol
Women have chocolate men have bikes.....
including ones who like chocolate....
Thanks!
