Honda CG125 front sprocket shim?

[scotto75]

Hi,

I'm currently attempting to get a '88 CG125 BR-J up together for an MOT. I haven't used it before, so have been encountering a few strange oddities when stripping things and rebuilding.

I removed the front sprocket to fit a new one, and when I cleaned the huge amount of sludge and gunk off I found this washer/shim had been stuck to the inside of the sprocket.

https://i951.photobucket.com/albums/ad355/scottfury/IMG_7644.jpg

I've now come to refit the new front sprocket, but can see that the internal diameter of the shim is too big for the splined shaft. It doesn't fit basically.

https://i951.photobucket.com/albums/ad355/scottfury/IMG_7646.jpg

Having looked at the exploded diagram in the Haynes, I can't see a washer or shim that is supposed to be fitted onto the shaft before the sprocket. It shows only the sprocket being fitted onto the shaft, secured by the locking plate with two bolts.

Am I missing something? If this isn't meant to be there, is there a reason why the previous owner has stuck this oversized washer between the case and the sprocket? The sprocket does move slightly on the shaft after the locking plate has been fitted. How much play should there be, and could this washer be used as a shim to keep the sprocket from moving too close to the case?

I've got a new chain but haven't fitted it yet as I have the rear wheel in bits. Any advice would be much appreciated. Thanks!

[redeem ouzzer]

Yes the shim is a bodge.

Yes the sprocket is baggy on the splines, the chain tension stops it slopping around.
____________________
Be a REAL MAN!

[scotto75]

[Ed Case]

Typically Honda the front sprockets are sloppy on the g/box output shaft, doesn't seem to harm anything. You can damn' near throw one onto that shaft from the other side of the street !.