Locking nut on the valve rocker arms

[Bucko]

Help does anybody know what size/type of thread the locking nuts are on the adjuster arms?ive lost one and having looked today it seems to be a very odd size,thanks steve

 

[gggGary]

I think those nuts are high strength. I wouldn't trust a hardware store nut there.

90170-08173-00 NUT,HEXAGON

used on many bikes, get the right one from Yamaha.

http://www.boats.net/parts/detail/yamaha/Y-90170-08173-00.html

List price is 2.65 USD

 

[Paulrxs650]

That's a pain in the arse! Magnet on a stick to find it?
Probably high tensile I'd say, some of the metric threads have odd TPI. Best bet would be to get a hold of a thread gauge to identify then Give these chaps a ring http://www.hawkfast.com/ they're on your doorstep and would be able to point you int he right direction?

 

[Bucko]

Thanks for the help fellas,ive got a thread gauge at work so il have a look tomorrow,i was just being lazy and hoped somebody might know the size ive used hawk in the past paul thanks,theyre normally realy helpfull,as to finding the missing nut i dont think ive ever had it!ive stripped the lump right down to check everything over,only noticed one was missing when i went to check the valve gap!

 

[Paulrxs650]

Ah what a bugger! Or, pop down to Rufforth? You never know?

 

[5twins]

I'm sure it's hardened and since it's a 12mm hex size on an 8mm shank, it's probably a J.I.S. standard fastener as well. The adjuster screw threads right out of the rocker. Take it with you when you go for the new nut.

 

[sseres]

I have if you'd like.

 

[Bucko]

I have if you'd like.

Thats very nice of you to offer thanks,but i,m over in the UK!

 

[xjwmx]

Thats very nice of you to offer thanks,but i,m over in the UK!

Just bin it in an envie and it'll be there in less than a fortnight. (Imitation UK lingo there).

 

[GreasyC]

Mine is M8-1.0 with a 13mm nut.

 

[Bucko]

Just bin it in an envie and it'll be there in less than a fortnight. (Imitation UK lingo there).

Qaulity but it should read- it would be absoloutley spiffing if you could take the trouble to pop it along using ones postal service old bean,toodlepip for now

 

[Bucko]

Mine is M8-1.0 with a 13mm nut.

Thanks for that,you are right!ive just orderd four for the ungodly sum of £1.49 ! Result

 

[Reid]

I have to wonder where it went! Could it have gone down in the engine?

 

[rebel542]

I wonder the same Reid.

 

[Bucko]

Sorry fellas,should have said,i bought the bike as an unfinished project,first thing i did was strip the motor and bag/lable everything up,i only noticed the bolt was missing after reassembly when i was setting the vave gap,cheers steve