Honda-SOHC

Anyone have the size to hand?
The parts book has it as : (B.T6S) 96201-80000

Measured mine and it seems a strange size....

Contact Julie as i just filled up her stock draw with them 

Hi. The circlip on my kick-start spindle has come off and all the parts ended up in the oil pan. Can anyone tell me does the ratchet guide rest on the gearshift spindle to disengage the ratchet itself when under tension? I can't see any other place for it to sit! (Attachment Link)

You must always replace the circlip on the end of the shaft with a new one or it will just come off again 

Mine is a old washing up bowl 

Just too a look at your bike in the gallery Phil. She is a nice looking bike 

The Question was about a sync port screw / vacuum screw so how can that be irrelevant. The member asked a question and i answered it.
Roo contradicted my answer with the wrong information about a M5 pitch screw for a 750 and any other SOHC's.
Ken jumped on the band wagon with his little team to confuse the thread and the correct answer. 


They spoke very good English in 1992 in Japan as they do today. And yes they teach you a lot about JIS in the engineering collage and do teach you about changes in Honda parts and engineering practices 

Paul posted a picture of a Honda bulletin which says that motorcycles like the CB750 were fitted with what are essentially a mixture of both ISO and JIS standards Ted. In order to try and avoid stripping threads Honda decided to keep the look of the JIS screw and bolt BUT they threaded them to the ISO standard and not the JIS standard. The JIS standard for an M5 screw or bolt is 0.9mm, whereas the ISO standard is 0.8mm.

Graham in his usual, I know everything manner, incorrectly said the JIS standard is 0.8mm and the Honda bulletin clearly shows he's wrong. Now for some reason he can't read bulletins any longer and when he does he clearly misreads them, or as is more likely, he pretends to misread them and continues to argue a losing point.

So to clarify, all bolts and screws fitted to bikes like the 750 are threaded to ISO standards not JIS standards, the shape of the head is irrelevant, as it's the thread pitch that counts not what it looks like.

Roo, 

The whole post is about a CB750 and CB750 have JIS post 1967 M5 with a 0.8 pitch thread which are Japanese Industrial Standard after the change over in 1967. It was not about JIS pre 1967 which are M5 with a 0.9 pitch thread.
Both are classed as JIS. It is just pre and post pitch size.

So you are saying that all the M5 threads on all the SOHC's from 1969 have a pitch of 0.9  And i have been fitting the wrong pitch JIS bolts and screws all these years and forcing the JIS bolts and screws to damage the threads but, 0.8 screws bolts fit perfectly  Just tried to get a M5 with a 0.9 screw in to a head light rim for a SOHC and guess what, it doesn't fit.

And the member Pauarc has already stated that he has checked his sync port screws and his are 0.8, though the CB750K sync port screws are not the same as any other SOHC sync port screws but, only members with CB750's will know this.

Some member have experience and some members just believe what they have read