30-03-13, 10:27 AM
(30-03-13, 10:05 AM)darrsi link Wrote: The washer and modded nut kit is part number [size=1em]90891-10124.[/size]If you go to a Yamaha dealer and just ask for the sprocket nut they will probably come up with the old 9mm thick nut. As above you must ask for that part number, which has a 12mm thick nut and a lock washer.
[size=1em] [/size]
Don't get too hung up about this as most people have not had a problem. Like most posts on the internet it is the ones with the problem who tend to respond, thus giving the impression it is very common. Still well worth checking of course and as darrsi says get it done for peace of mind.