73MXA Cylinder Nut - Which Socket?

[BJJ]

What type of long socket do you need to use for '73 MXA Cylinder nut?
I know it needs to be long,  but what size is it?
Will have to buy one from a tool shop 
Thanks in advance

[jimg1au]

it 13mm you can use 1/4 drive sockets i have one if you get stuck but i bought mine from auto parts at meani
not sca

[cyclegod]

it 13mm you can use 1/4 drive sockets i have one if you get stuck but i bought mine from auto parts at meani
not sca

Are you sure? my barrel nuts were 14mm, but the cylinder head nuts were 13mm

[BJJ]

It's the ones that hold the barell down onto the crankase.  Down that deep hole.  The sockets and extensions I have tried so far (mix of both size drives)  don't seem to want to make their way down the whole.

[BJJ]

Hi Paul,  I guess I better say this is a Yamaha MX,  not a Montesa/Maico (although that Allen Head example looks like it could be universal).  The heads of the nuts are hex,  like this one:

http://cid-0970e1979402bd5b.skydrive.live.com/browse.aspx/MXA?authkey=2hZNJNNBJW4%24&ct=photos

[jimg1au]

i will check tomorrow as i am at work now
cheers
jim

[BJJ]

Thanks Jim

[JC]

If they're the same at the DT (& I'd think they are) they're 13mm, but you MUST use 1/4" drive sockets - my 3/8" drive ones are simply too big OD to fit down there.

[Freakshow]

can you crack them through the side ? and then use whatever you have to spin em around  ?

actually forget that use the right socket :

[BJJ]

Thanks JC  (and freakshow for imagination).  will give this a go.  Will report back next days to the thread how I get on.  Regards, 

[Nathan S]

My 3/8" drive AWB/SuperWorks Gold socket set fits down the holes.

Been a damn good set of tools, despite the SuperCheap stigma - only ever broken one bit, which was the 14mm socket while undoing a Volvo head bolt, using a 5.5' length of pipe for extra leverage...

[JC]

Billjack,

the heads of the nuts round off fairly easily. (Unfortunately I speak from experience) Then you have a problem I haven't yet overcome.

Make sure yr socket is a good fit & don't force it if they're not moving. Maybe good idea to spray w Bolt-off or the like a while before you try

[Lozza]

Volvo's have worse stigma than Super Cheap so don't let that worry you But those SWG tools are VERY good.

[BJJ]

Thanks guys,  I am very impressed with the help I have got from this forum.  Considering all the other bikes will be gone within the week  (eBay).  Then I see no other bike project for me to be dissalusioned with (is that a word). 
Maybe that 600 thumper   LOL. 
I'll get to a tool shop in the next days and report back.  Once again,  thanks.   
Any small information I know,  in these situations is invaluable.

[Freakshow]

No probs im good with imagination.

P.S the 73 is just the MX the 74 speedblocker is the MXA