Author Topic: The front sprocket nut and washer saga (Read 50014 times)

His Dudeness · « **Reply #75 on:** 11 February 2013, 07:25:19 pm »

3 threads to hold a sprocket on an engine. that was a scandalous design

rjd1 · « **Reply #76 on:** 12 February 2013, 12:29:09 am »

went to yamaha dealer in kirkaldy they even offered to fit it for me
wasnt much point as i`d allready had it stripped on my ramp ready for new one

they were very helpfull and i received the part within 3 days

duffes is the yamaha dealer

packie · « **Reply #77 on:** 12 February 2013, 11:29:38 am »

Quote from: dave8204 on 28 January 2013, 07:04:24 pm

Apologies for reviving a" thread from the dead" but this issue is still arising.
Mechanic mate of mine had an 03 Fazer 600 in last week for a new chain and sprockets,took the front sprocket cover off and there was no retaining or washer to be found! He knows the problem so the bike was checked before the modded part was ordered but obviously there are still bikes "out there" in a potentially dangerous condition.

Just had the same problem myself. My chain had a few tight spots from previous owner and I have decided to change the chain and sprockets even though there was plenty of meat left. Having read this thread, I decided to check to see if I had the old nut or new modified nut......I have NO NUTS!! Not a good position for a guy!!

Anyway, thanks to this thread being revived, it probably have saved my life or my body from serious injury.

gerkin · « **Reply #78 on:** 12 February 2013, 05:30:52 pm »

Quote from: packie on 12 February 2013, 11:29:38 am

Quote from: dave8204 on 28 January 2013, 07:04:24 pm
Apologies for reviving a" thread from the dead" but this issue is still arising.
Mechanic mate of mine had an 03 Fazer 600 in last week for a new chain and sprockets,took the front sprocket cover off and there was no retaining or washer to be found! He knows the problem so the bike was checked before the modded part was ordered but obviously there are still bikes "out there" in a potentially dangerous condition.

Just had the same problem myself. My chain had a few tight spots from previous owner and I have decided to change the chain and sprockets even though there was plenty of meat left. Having read this thread, I decided to check to see if I had the old nut or new modified nut......I have NO NUTS!! Not a good position for a guy!!

Anyway, thanks to this thread being revived, it probably have saved my life or my body from serious injury.

phew !!glad you found out !

darrsi · « **Reply #79 on:** 12 February 2013, 06:37:01 pm »

Quote from: packie on 12 February 2013, 11:29:38 am

Quote from: dave8204 on 28 January 2013, 07:04:24 pm
Apologies for reviving a" thread from the dead" but this issue is still arising.
Mechanic mate of mine had an 03 Fazer 600 in last week for a new chain and sprockets,took the front sprocket cover off and there was no retaining or washer to be found! He knows the problem so the bike was checked before the modded part was ordered but obviously there are still bikes "out there" in a potentially dangerous condition.

Just had the same problem myself. My chain had a few tight spots from previous owner and I have decided to change the chain and sprockets even though there was plenty of meat left. Having read this thread, I decided to check to see if I had the old nut or new modified nut......I have NO NUTS!! Not a good position for a guy!!

Anyway, thanks to this thread being revived, it probably have saved my life or my body from serious injury.

Blimey, you were lucky......

packie · « **Reply #80 on:** 12 February 2013, 11:36:05 pm »

I sure was lucky. I think it was a combination of bit of rust, the tight spots keeping a bit of pressure on the sprocket, and the Grace of God that kept the sprocket from moving. There was a couple of times were I had the bike up to three digits on the speedo....would have been fun if it came off then!

darrsi · « **Reply #81 on:** 13 February 2013, 01:05:08 am »

Quote from: packie on 12 February 2013, 11:36:05 pm

I sure was lucky. I think it was a combination of bit of rust, the tight spots keeping a bit of pressure on the sprocket, and the Grace of God that kept the sprocket from moving. There was a couple of times were I had the bike up to three digits on the speedo....would have been fun if it came off then!

Very lucky, but all is good, so good on you!

I had my bike up to 3 digits once, on the way to work, i remember it vividly, it was 29.3mph

Dead Eye · « **Reply #82 on:** 13 February 2013, 02:04:28 am »

Just replaced my sprocket nut for the uprated version (among many many other things) and hopefully getting it out tomorrow after its been off the road for almost 2 weeks pending maintenance...

I had my previous one up to at least 88 mph just to see if anything would happen

packie · « **Reply #83 on:** 13 February 2013, 08:45:33 am »

Quote from: Dead Eye on 13 February 2013, 02:04:28 am

Just replaced my sprocket nut for the uprated version (among many many other things) and hopefully getting it out tomorrow after its been off the road for almost 2 weeks pending maintenance...

I had my previous one up to at least 88 mph just to see if anything would happen

Hope the test run goes ok and that you don't experience any problems, Deadeye.

I wouldn't be a speed merchant myself these days, but I think I had it over 100+mph on 3 occasions so far. The first was after I bought the bike in November. I took her out very early on a quite morning with no cops about to test that she was running ok across the whole rev and gear range. Think I backed her off around 125mph when I was satified that she was doing the biz. The second time was a test like the first after I devolped a problem with power delivery which turned out to be a dodgy back brake system. The last time was on the motorway recently overtaking a car at 80mph and left her roll on to a 100mph for a few seconds to put a bit of distance between me and the cager. Other than that, I drive handy enuff with the knowledge if I do need to push the lad on, that she has plenty under the tank to do the biz.

xlewisbdx · « **Reply #84 on:** 13 February 2013, 10:33:44 pm »

Can I ask... What size spanner or socket would I need for the upgraded nut?

Dead Eye · « **Reply #85 on:** 13 February 2013, 10:37:15 pm »

Off the top of my head you want to be using a ~~24mm (might be 27mm?)~~ 32mm socket with at minimum a 1/2" drive. Preferably you want a torque wrench for it

I only did it the other day and I've forgotten already...

DryRob · « **Reply #86 on:** 14 February 2013, 09:59:19 am »

Quote from: xlewisbdx on 13 February 2013, 10:33:44 pm

Can I ask... What size spanner or socket would I need for the upgraded nut?

The nut is the same size as the original, it just has more threads so is thicker/deeper/taller.

Jazz999 · « **Reply #87 on:** 14 February 2013, 12:37:35 pm »

Just looked at mine - has the original on it but looks solid at mo - 14k on the bike. Went to change it and remembered - no 27mm socket and no torque wrench! D'oh!

bandit · « **Reply #88 on:** 14 February 2013, 12:38:16 pm »

Hi, you need a 32mm socket for the old/new sprocket nut.

Jazz999 · « **Reply #89 on:** 14 February 2013, 12:39:23 pm »

Ah ok, ta! Haven't one of those either - roll on payday

Dead Eye · « **Reply #90 on:** 14 February 2013, 12:40:05 pm »

If people are near Chelmsford, or want to pop by I can lend a hand since I have most tools I need to do all but the rather specialist jobs :P

Is it 32mm on the sprocket? Fair enough, my bad :P

Jazz999 · « **Reply #91 on:** 14 February 2013, 12:42:16 pm »

I'm up in Felixstowe so not too far - may take u up on that in the next cpl weeks matey!

alexanderfitu · « **Reply #92 on:** 14 February 2013, 12:42:31 pm »

Ditto in Harrow, I have an inpact wrench and the sockets requird to make this an easy change. If anybody wants to come round and use them they are welcome.

Dead Eye · « **Reply #93 on:** 14 February 2013, 12:45:57 pm »

Quote from: Jazz999 on 14 February 2013, 12:42:16 pm

I'm up in Felixstowe so not too far - may take u up on that in the next cpl weeks matey!

Just give me a PM to arrange a date / time when you want

Jazz999 · « **Reply #94 on:** 14 February 2013, 12:49:50 pm »

Will do - had to use the new gasket as the old one was disintegrated :-(

NOTHING FAZES A FOCCER!

Dead Eye · « **Reply #95 on:** 14 February 2013, 02:14:21 pm »

I wouldn't worry about the gasket for that cover - I can't see what purpose it serves

Jazz999 · « **Reply #96 on:** 14 February 2013, 02:43:59 pm »

Quote from: Dead Eye on 14 February 2013, 02:14:21 pm

I wouldn't worry about the gasket for that cover - I can't see what purpose it serves

True - it was caked in crud behind there anyway! Reckon it keeps the crap from the chain being thrown everywhere else!

Buzz · « **Reply #97 on:** 14 February 2013, 02:46:57 pm »

Quote from: alexanderfitu on 14 February 2013, 12:42:31 pm

Ditto in Harrow, I have an inpact wrench and the sockets requird to make this an easy change. If anybody wants to come round and use them they are welcome.

I may well take you up on that offer, I'm in Holloway and a sprocket/chain/bigger nut change was the next thing on my list.

Sharing is caring after all!

alexanderfitu · « **Reply #98 on:** 14 February 2013, 02:48:30 pm »

Quote from: Buzz on 14 February 2013, 02:46:57 pm

Quote from: alexanderfitu on 14 February 2013, 12:42:31 pm
Ditto in Harrow, I have an inpact wrench and the sockets requird to make this an easy change. If anybody wants to come round and use them they are welcome.

I may well take you up on that offer, I'm in Holloway and a sprocket/chain/bigger nut change was the next thing on my list.

Sharing is caring after all!

Of course! Just give me a PM to arrange a time.

Chris · « **Reply #99 on:** 14 February 2013, 06:11:58 pm »

I thought I better have a look at my sproket retaining nut. Took the cover off and my god it was filthy behind it so gave it all a good clean up and regreased all the joints etc. I've still got the old nut by the looks of it, it's solid enough and looks fine but will replace it anyway.

So went to my local yamaha dealer and got the "I've not heard of this before" so gave him the part number and the service code (from page 2 of this thread) and he said he'd give yamaha a phone to see if I can get it for free, he's ordered it anyway though and it's only £5.43 or something so can't really complain. Will be going back in a day or two to pick it up and hopefully not have to pay for it! haha