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Bikes, Hints'n'Tips => FZS600 Fazer => Topic started by: Andy Clap on 03 April 2012, 02:16:37 pm
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Just took the sprocket cover off for a bit of cleaning/inspection. Found that the sprocket is only being held on by the tab washer. I was a little surprised as although I knew of others having the problem it never happened on my previous Fazer.
Quick Google search found this excellent site and article...
http://foc-u.co.uk/index.php?topic=92.0 (http://foc-u.co.uk/index.php?topic=92.0)
Within 5 minutes I'd phoned the local stealer, they'd taken my details and submitted something to Yamaha. Waiting to hear back to get it booked in and fixed.
Many thanks to John Silva for the topic.
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Many thanks to John Silva for the topic.
Sorry, just noticed the original article was by Slidesvill.
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Hello, How did you get on with Yamaha? I've noticed that my sprocket nut is the old 9mm size and I'm not sure if I should just buy a new one or ask Yamaha to change it. As the bike is 03 with 37k miles I'm not sure how interested they will be.
Andy
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Hi Andy
They haven't got back to me yet, I'll chase them in a day or so.
From the article (see link in first post) it shouldn't matter how old the bike is or if it's been serviced outside the dealer network. I guess the dealers get paid by Yamaha so probably don't give a toss how old it is.
Mine is a 2002 with 13.5k miles.
I'd give them a bell and ask.
Cheers,
Andy
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For the sake of less than a tenner buy one and save an expensive gearbox rebuild, if you already know theres a problem and a cheap fix you will only have yourself to blame.
I have a shiny new nut and tab washer, it has been sitting by the bike for months now, maybe I should fit it... :rolleyes
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Fitting the correct nut myself seemed the easiest choice, faffing around and getting it booked in to suit some dealer's timetable would have been far less convenient.
What still amazes me is that when parts suppliers look up the part number on their microfiche and ask for the old nut, Yamaha still provide it instead of automatically sending the upgraded version. Now maybe the part is common to some other bikes that don't require the newer nut, but knowing that if it is for an FZS600 they could end up footing the bill for a final drive shaft replacement they ought at least to query it.
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Fitting the correct nut myself seemed the easiest choice, faffing around and getting it booked in to suit some dealer's timetable would have been far less convenient.
But there is a known fault with some output shafts being too small. They will replace the shaft if need be. With a crap shaft the nuts will come undone whatever.
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The shaft is only too small if the nut has come loose and buggered it up, if the nut is still tight and always has been the shaft should be fine, I don't think there were any bad shafts made, I stand to be corrected...
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The shaft is only too small if the nut has come loose and buggered it up, if the nut is still tight and always has been the shaft should be fine, I don't think there were any bad shafts made, I stand to be corrected...
That would make sense, especially as the mod is a wider nut.
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Contacted main dealer regarding the dreaded nut and their reply was"Unfortuately the Yamaha FOC campaign has long finished" Locknut £4,20 washer £4,10 inc vat. So hopefully the shaft is ok and it's going to cost £10 for piece of mind.
Andy
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Andy FZS. When I bought one the nut and lockwasher came together in a sealed plastic bag and described as a "nut and lockwasher kit" Part No. 90891-10124, for about £4.50. That was a good while ago so I suppose it may have changed now. Just make sure they give you the 12mm wide nut before you hand over the dosh.
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Yamaha will honour this.I contacted them a couple of months ago (Yamaha uk head office)and spoke to them.They wanted the bikes frame number and mileage.If it fell within the affected batch I could take it to my nearest main dealer and have it checked and rectified if neccessary.As it was I ended up doing it myself,less hassle.My bike is 11 years old with some service history but this made no difference.
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Checked my front sprocket last year and found nut and shaft completely knackered. Contacted local dealer (Skellerns) they checked with Yamaha and, after taking a few measurements, agreed to fix the whole lot FOC! And this on a 12 year old 28k bike. The repair took longer than ideally i would have liked (about 3 weeks) but i was just amazed they agreed to do it. You also get a free oil and filter change out of it ;) .
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Just chased CMC Clay Cross, they are waiting for a modification number from Yamaha and will then get it booked in.
I want them to do it as the nut is loose (although held by the lock washer so only about 5 degrees free movement) so there is possible shaft damage.
Using the part number quoted above I found this which illustrates the new nut and washer nicely...
http://www.bikesandtravels.co.uk/default.aspx?pagef=203&l1=Biking%20Blog%20Yamaha's%20Stripped%20Loose%20and%20Lost%20Sprocket%20Retaining%20Nuts (http://www.bikesandtravels.co.uk/default.aspx?pagef=203&l1=Biking%20Blog%20Yamaha's%20Stripped%20Loose%20and%20Lost%20Sprocket%20Retaining%20Nuts)
Will keep you informed...
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Hi all,
I checked mine out a few months back (in the snow...) and my nut was indeed the wrong one.
Replaced it with the correct nut after checking the shaft thread was OK.
If it helps, I've added some pics.
Why Yamaha didn't notice this in production is beyond me...
EdC
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And this is the kit contents for those interested!
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Thanks for those pics, checked mine and it has the old nut, no signs of any wear yet though. printed off all this info and will be taking along to my dealer to make sure they order the correct nut.
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Is it absolute necessary getting this sorted? I'm pretty sure mines the smaller nut :\ however i was told it never effected the 2003 foxeye models? :rolleyes
Will have a check tonight
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well mine is the 2003 foxeye and for the sake of £4 id rather have the piece of mind that its done, rather than being paranoid and checking every weekend.
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ba bla bla still using the original with no issues :eek
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I had no issues with mine either. Neither did the Yamaha stealer in Cambridge that re-fit the old one when I had the sprockets/chain changed a year ago. Neither did they mind reusing the tab washer. In fact, this is one of the main reasons that I serviced the bike myself last month.
In my mind, it makes more sense to replace the nut for a tenner onto a drive shaft that still has thread on it, rather then wait until it all goes up sh1t creek.
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Noticed a jingling sound exactly like house key on top yolk last week.. Twas the dreaded nut! 9mm and was completely stripped. Shaft was grand, 17.5mm and threads ok. Just replaced it with 12mm one.
This was on 2001 with 28k
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I think the original is ok until someone gets heavy handed changing the sprockets, as most of us probably do, then it's just too borderline on it's strength, as for re-using tab washers I've always done that if they look ok and only changed if they are looking worse for wear.
I bet if you always use an accurate torque wrench to tighten the nut it'll last years but most of us go for the 'rather tight than loose' approach which is when you need a bit of extra strength than just whats needed and no more.
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Mine was ok on a 98 model but decided to change it for piece of mind - the cnuts at the Yam stealers sent me the wrong nut, this was despite me repeating the issue to them!! :grumble
Part no 90215-21290
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Mine was fine when I checked it but changed it for piece of mind.I've read that Yamaha recommend that the new fatter nut it torqued to 90 nm,where as the original one was 70 nm.I did mine to 80nm and a few drops of blue lock-tite.
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Just Emailed Yamaha with all bike info to see if I can get them interested in replacing nut FOC if not I'll buy one and fit myself. Has anyone had any luck with Yamaha recently?
Andy
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I've been in contact with my dealer and with Yamaha. Please see below.
Reply from dealer;
The part you require for your FZs600 2003 model is available to order from us here at ########.
You can collect from our store, or we can send the part to you.
Total cost of the part including vat is £4.20 ( In store today ) Unfortunatley the Yamaha FOC replacement campaign has long finished.
We also have the locking tab washer £4.10 Inc vat
Many thanks
Parts Department
Reply from Yamaha
Thank you for your enquiry about your Yamaha FZS600.
The service note you have mentioned relates to a service check of the torque of the front sprocket nut.
If your motorcycle has ever had a replacement chain and sprocket set, the fitting technician will have re-torqued ok.
I hope this information is of assistance.
Best regards,
######
Technical Service[font=]
Service Department[/b][font=]
After Sales Division[/font][/font]
My reply
[font=]Thank you for your reply but I’m more concerned about the actual suitability of the front sprocket nut as mine is only 9mm wide(original) and I’m lead to believe by several other people that Yamaha have found this nut to be inadequate and hence replaced it FOC with an upgraded 12mm nut and gearbox output shaft when required. I’m aware as you say the new nut is fitted with a higher torque setting but as mine is not the upgraded 12mm nut I feel that over tightening it may actually do more harm than good. At the moment mine seems fine but as ignoring it could lead to serious engine damage I’m anxious to get it resolved.[/font]
[font=] [/font]
[font=]Best Regards[/font]
And Finally from Yamaha
Hello Andrew,
The nut for the front sprocket has a different part number mentioned as it comes in a kit with the tab washer. The nut in the kit is the same as the standard. i.e no change.
I hope this information is of assistance
Best regards,
########
Technical Service
Service Department
After Sales Division
So according to Yamaha the nut has never changed? obviously wrong. I know I could just change the nut but I'm concerned if I touch it and find anything else........... If I phone Yamaha who do I ask for and what do I say if they say nothings changed?
Sorry it's a bit long.
Help Andy
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If the nut is tight now all will be fine, if there was a problem it would have come loose and shagged the thread but as it hasn't just buy the new nut and fit it ffs, it's less than a tenner for the kit and it's a ten year old bike long out of warranty, they've done well to repair as many as they have out of warranty, if you ignore a problem you know about with a cheap fix you will only have yourself to blame for not doing it when it goes wrong.
The kit part number is 90891-10124, the nut is 12mm thick with slightly different recess depth and tab washer included, I can guarantee that as it's in my hand right now (still not fitted it :o ).
buy kit, fit kit, problem gone, go to pub! Simples.
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Clearly you're up against someone who doesn't know what he's talking about. While I can see a temptation to make him acknowledge that he's wrong, is it worth the effort? Saving eight quid if the cost is hours spent composing emails and getting wound up by obstinate twits at Yamaha doesn't seem like a good return on anyone's time to me.
Change it now if it bothers you, else just get in the habit of giving the back wheel a spin when the engine isn't running, if you hear a chink-chink noise the nut's come off and you need to replace it, otherwise wait until the chain and sprockets need changing and do it then.
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Bike's booked in for Tuesday, new nut and washer courtesy of Yamaha.
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It must have been Yamaha (music) I contacted as they didn't even know there was an issue never mind about them sorting it FOC so it looks as if I'm going to have to sort it myself.
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Hello to the Fazer club, I have just registered as I am in the process of trying to buy a good fzs 600. Somewhat alarmed by this news. I will hopefully be looking at a pretty mint 2001 with low miles this weekend. As you are all familiar with the bike, can you tell me; is it possible to access the sprocket nut with the fingertips with the cover in place, at least to superficially check that everything is tight and present. I don't think that the seller would be very keen on having his bike dismantled by a potential buyer. The prospect of buying a new (to me) bike for nearly a couple of thou with such a fault is tending to put me off, even if Yamaha would fix it for free.
Thanks.
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No, unfortunately, as far as I'm aware you must remove the sprocket cover. To do this, first you have to remove the gear lever from the gear shaft - it only involves one (hex) bolt. Removing the cover is simple too, only involves 4 or 5 (allen) bolts, something like that. They are of various lengths so remember where they go.
Also be aware that originally there was a gasket beneath the cover that would likely need replacing - but unless the bike is very low mileage and never had the cover taken off, it's very likely to have been removed before and not replaced as it's basically a redundant part and nobody bothers.
It's a simple, 10 min job to do and there is no harm in asking the seller to do this so you can check it. Shame you have worry in the first place though as it's a cracking bike as all of us here know.
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Hi folks,
The nut has come off my other half's fazer, and looks like it has removed the threads from the output shaft as well....
I'll try Yamaha to see if they'll do anything, but I very much doubt it!
If I don't want to split the cases (well, not yet anyway), what options do I have?
Can a new thread be tapped onto the output shaft and a smaller nut fitted?
At the moment, I'm considering getting the sprocket/nut welded onto the shaft so we use the bike over the summer, then stripping it down over the winter!
Typical... just had to happen 2 weeks after she passed her test when the sun's out!