The front sprocket nut and washer saga

[Enceladus]

Doesn't matter really as the nut has held. Mine was visibly loose and only the locking washer was holding the sprocket on. I'd still recommend acquiring the new nut when changing the sprockets next time. Doesn't look like the nut is flush with the axle end as the new nut is, so could be that's still the old nut type. Only measuring the thickness would tell for sure. 9 mm -> old nut and 12 mm -> new nut.

thanks
i'll keep an eye on it and change it next time i do the sprockets just to be safe.

[Foxwood]

thanks
i'll keep an eye on it and change it next time i do the sprockets just to be safe.

No problem.
A good indicator that something might be going wrong is unordinary noise coming from the chains/sprockets that doesn't cease with lubing or tightening of the chains. At least that's how I caught onto my problem at first.    Oh and found a few pics of the 2 different nuts to visualize them.


Edit: Left one is old and right one is new.

[Enceladus]

thanks
i'll keep an eye on it and change it next time i do the sprockets just to be safe.

No problem.
A good indicator that something might be going wrong is unordinary noise coming from the chains/sprockets that doesn't cease with lubing or tightening of the chains. At least that's how I caught onto my problem at first.    Oh and found a few pics of the 2 different nuts to visualize them.


Edit: Left one is old and right one is new.

many thanks

[Enceladus]

spotted this
not sure if it will help anyone.......
http://www.ebay.co.uk/itm/230918451728

[ChristoT]

spotted this
not sure if it will help anyone.......
http://www.ebay.co.uk/itm/230918451728

Why bother paying? If it's not been done Yamaha are still changing them for free!

[Foxwood]

spotted this
not sure if it will help anyone.......
http://www.ebay.co.uk/itm/230918451728

Why bother paying? If it's not been done Yamaha are still changing them for free!

Local dealer said not a known problem.
Finnish importer's technical assistance manager also said not a known problem, FZ-6 issues not related even though basically the same structure and the technical service bulletin numbers didn't relate to anything in the databases.
Finnish importer's Yamaha motorcycle product family line manager also said the same and relayed some bullshit e-mail from a Yamaha Europe representative (handily had censored all critical info, like names and e-mail addresses).


 


After enough of doing that, I just bought the f*cking new nut of eBay. Wasn't really expecting much for 14 year-old bike, but I do know now that I will never ever be buying a new Yamaha or spare parts from the local importer.

[Dave48]

Even if you have to buy the 12mm nut & lock washer kit from Yamaha you shouldn't have to pay any more than I did- £2-44 -2 weeks ago  via main dealer.

[darrsi]

spotted this
not sure if it will help anyone.......
http://www.ebay.co.uk/itm/230918451728

Why bother paying? If it's not been done Yamaha are still changing them for free!

Local dealer said not a known problem.
Finnish importer's technical assistance manager also said not a known problem, FZ-6 issues not related even though basically the same structure and the technical service bulletin numbers didn't relate to anything in the databases.
Finnish importer's Yamaha motorcycle product family line manager also said the same and relayed some bullshit e-mail from a Yamaha Europe representative (handily had censored all critical info, like names and e-mail addresses).


 


After enough of doing that, I just bought the f*cking new nut of eBay. Wasn't really expecting much for 14 year-old bike, but I do know now that I will never ever be buying a new Yamaha or spare parts from the local importer.

Next time you see them show them the service note number: SERVICE NOTE 2005-12A

More info here as well:   http://foc-u.co.uk/index.php/topic,92.msg370.html#msg370