Fazer 600 Front Sprocket Nut and Torque Setting Confusion.

[0l0dom0l0]

So I had a look yesterday as the chain looked loose. Turns out it had some nasty tight spots. Seeing as the weather is shit this week, I've whipped it off and am soaking it in some old oil I've got to try and free it up. It's seen better days as was in a really sorry state when I got the bike.

The rear sprocket looks okay but not great, and haven't had a chance to look at the front yet, but I was going to give everything a clean and check it was all ok.

Now I remember reading a while back that there was a problem with the Fazer, and the output shaft. I can't quite remember what happened but it was along the lines of the nut could come off?

I also remember reading that the standard nut was safe to be torqued up to something like 80lbs to stop it happening? When the time came to change the C & S you could buy the new type nut which was supposed to stop it from happening.

Can someone that understands the problem explain it to me a bit better? Apparently the worst case is the thread on the output shaft can be stripped? Also I've been reading I need to measure the output shaft? What for?
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CBT Passed: 30/08/2009, Theory Passed: 31/08/2010, Mod 1 Passed: 6/9/2010, Mod 2 Passed: 13/09/2010. Restriction ended 13/09/2012.

Bikes: 2007 Derbi GPR 50, 1998 Yamaha Fazer 600 (written off), 2002 Yamaha Fazer 600, 1994 CBR 600F, 2003 Triumph Daytona 600, Kawasaki ZX6R J1.....Current: 2006 Yamaha FZ6, 1998 Suzuki TL1000R and a Honda VFR 400 NC30.

[Paddy Blake]

The front sprocket has a tab washer behind it to stop it moving on the shaft.
The torque setting is 70 Nm.

[0l0dom0l0]

[N cee thirty]

might be worth asking on https://fazerowners.yuku.com/

sure somebody on there will know the remedy

hope mine doesn't come off though
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[0l0dom0l0]

[N cee thirty]

cool,tell me if its any good on 14t

i read on there that the fazers geared pretty low,but it could have been bs
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[0l0dom0l0]

[Paddy Blake]

I have never heard of this being a problem and i have changed many sprockets on Fazer 600's that were owned by couriers.

[sickpup]

The problem iirc is that the shaft has a fine thread and monkey's over tighten the nut stripping the thread.

Common problem to most Yamaha's. seem to remember it happened to Pete's Diversion.

[delsol]

Hi 0l0dom0l0,

Only trying to help, but your comment (below) worries me for your safety and for the goood of your bike.

"If you're worried I've ordered the new sprocket nut and washer for £8 from Yamaha. Only a 5 min job to change them over. Just wanted to know what torque to go to. I think I'll go double the original."

Applying extra torque above the manufacturer's specification is asking for trouble, why not keep it simple and use 'strong' grade thread locking compound in conjuction with the locking tab.

Reference sickpup's comment.

delsol

[0l0dom0l0]