31-01-17, 08:55 AM
(31-01-17, 12:15 AM)YamFazFan link Wrote: [quote author=tommyardin link=topic=21736.msg251220#msg251220 date=1485814208]
Yamaha put their hands up to that fault and have replaced free of charge the 9 mm nut with a 12 mm nut when bikes went in for a service or maintenance
Mine never got replaced at service or maintenance.
When I went to purchase the 12mm nut at the dealers they didn't seem to be aware of the issue at all.
They tried to sell me the old 9mm nut until I handed them the part number for the uprated one and asked them to just order that, rather than keep referencing back to parts list.
The independent garage I currently use knew all about the situation when I took the nut kit to them for fitting
Hi YamFazFan,
A request went out to all Official Yamaha dealerships telling them to replace the nut and washer as a matter of course whenever an FZS 600 came into their workshops to have work done to them, and the replacement was free, and the workshop was to put a centre punch mark after the info on the frame plate near the steering head. There was never an official call back as it was deemed to be a relatively small number of machines afflicted with this fault/problem and judging by the numbers of FZS 600 still about some 14 to 19 years later it sort of bears this out. And to be honest if this wasn't the case would we be the proud owners of our bikes or would we all be on Honda or Quackers.
Hi tommyyardin
I wonder if because my Fazer was one of the last in the production run it wasn't affected by this issue?.
The original 9mm nut never came adrift thankfully, but it's got to be a good idea to fit the uprated nut anyway isn't it.
[/quote]
As I said its all history now as far as Yamaha is concerned, the FZS 600 has a reputation for being a reliable bike with a bomb proof engine as long as it is serviced regularly, OK it had a quirky issues with the front sprocket nut letting go but, only on some bikes. I wonder what the mileage was on the bikes with the problem sprockets, I wonder if the front sprockets had been changed on any of them? if that was the case had the nuts been done up properly.
Anyway YamFazFun, me, I'm just an old Joe Blow who rides and enjoys his FZS600, but it would seem to me to be a wise thing changing the Nut and washer when changing the front sprocket, Yamaha call it an upgrade kit so it's certainly an improvement even if some have found that the original was a bastard to get off as I did, as I said I nearly bust a blood vessel in my neck straining to undo the bugger, even with a 3 foot length of 1 1/2" inch galvanised steel pipe over the socket wrench handle and still managed to bend the pipe. The windy gun just shocked the shit out of it and it eventually let go.
I think a lot of that issue is caused by the 620 Locite, but its better to have that removal problem, which is manageable, than to have the sprocket come off messing up your output shaft or worse still causing you to come off when it all goes tits up.