how many have had a loose front sprocket ? poll vote now

[gerkin]

blimey one  in three !!

[unfazed]

Buy a lotto ticket this weekend!

Nope, its merely a matter of doing the job right. I have been working on Fazers for years..... Ask any of the old guard on here as I have worked on most of their bikes at one time or another and have rebuilt more FZSs than I can remember.

If what you say is correct why did it happen to my bike and it had never been touched. Bought the bike new and 15000 miles later the nut went awol, sprocket came off the splnes onto the threads and lost all drive just after overtaking a car with my son on the back.

[Deefer666]

If what you say is correct why did it happen to my bike and it had never been touched. Bought the bike new and 15000 miles later the nut went awol, sprocket came off the splnes onto the threads and lost all drive just after overtaking a car with my son on the back.

I can only speak for my own experience
 

[dock]

Had mine for nearly a year now, this is the first ive heard of it, i will be straight in the garage tommorrow checking mine, thanks for the heads up.

[bozboz]

My previous nut had been rust welded on! Had to lock the back wheel with a metal bar through it onto the swinger just to get it off! Ordered the updated nut and washer from wemoto 2months ago and not had any problems so far(checked the other day) so no and no from me!

[BrianP]

Found mine was loose at 28000 miles though it had never been touched apart from cleaning. Treated the bike to a new chain / sprockets and had the dealer fit the new nut. Still fine at 40K...

[born to be mild]

What constitutes doing the job right then? I replaced my chain and sprockets  a couple of years back, new tab washer fastened over nice and tight, a dab of locktite and torqued to the right spec [ just not in that order !] . So far no trouble and nor do I expect any,  but just in case, did I miss something ? if theres something else that  needs to be done a bit of advice  would probaly help a lot of owners out.

[packie]

What constitutes doing the job right then? I replaced my chain and sprockets  a couple of years back, new tab washer fastened over nice and tight, a dab of locktite and torqued to the right spec [ just not in that order !] . So far no trouble and nor do I expect any,  but just in case, did I miss something ? if theres something else that  needs to be done a bit of advice  would probaly help a lot of owners out.

If you are using the original nut, it was a very thin design with very little threads. In a lot of cases (nearly 50% on this forum alone), the nut over a period of time stripped itself regardless if you had your tab washer fixed properly or if you have it torqued or locktited.

You say "so far, no trouble and you expect none"........have you actually taken off the cover and checked it?? I was riding around for a known 1,200 miles doing speeds of up 100mph on occasions and when I heard about this I did a check for peace of mind. My nut and tab washer was gone!! It was only the Grace of God a maybe a little rust that kept the sprocket on!!


Don't ask the why's and hows...but believe me this does happen....a lot!! Now you could be one of those on the lucky side of the 50%....but you need to envisage your bike locking up at whatever speed and ask yourself....do you want to take that gamble on your life on a flimsy flawed nut design??

The first positive step is to get the new BIGGER nut and washer from Fowlers or from some vendor like that. Make sure that the part number is 90891-10124

Most people are happy to just fit the new nut job in the same manner as you already have described....but there are others who are a bit more paranoid and went a step further. See link below to a PDF download from the poster "Unfazed" and you will also get an idea of whats going on and his fix.

http://foc-u.co.uk/index.php?action=downloads;sa=view;down=43

.....and see the next post for my Mickey Mouse effort with a little wire. Check your inside cover too. If it has a dampner fitted on the inside of the cover (see unfazed download for what a dampner is), then you are sorted. The sprocket will fit it hard to bypass the dampner.

[packie]

here you go...a bit crude, but it will work!! 

[bandit]

Get those nuts changed lads/lasses better be safe than sorry ,but don't count on Yamaha UK (some dealers are helpful)don't want to know wrote to them 2weeks ago & no reply bunch of t***ers I have always purchased Yamaha but may try another brand next time.   

[bozboz]

Get those nuts changed lads/lasses better be safe than sorry ,but don't count on Yamaha UK (some dealers are helpful)don't want to know wrote to them 2weeks ago & no reply bunch of t***ers I have always purchased Yamaha but may try another brand next time.

Like a Suzuki Bandit, Bandit?
Maybe we could forward the poll results to Yamaha and ask for a free upgrade?

[roadpilot3]

Spent best part of 2000 miles with nothing holding the front sprocket on but my guardian angel. 

[gerkin]

and yet this problem does not exist acording to thr importers
glad you found out in time 

[Boom]

Me as well, had new chain and both sprockets changed last September, garage rang me to say nut was loose and chewed up. thought it had just not been done up properly last time but obviously seems a common problem.