Topic: 1979 cb650 rear chain spec

[MMICAFE]

like the title says i am in dire need of the rear chain deflection everytime i shift the chain slaps the guard and i dont like that  sound so if anyone has the spaec and can help me out please pm me or just let me know on here

[scunny]

15mm-25mm slack  at the bottom  midway between both sprockets

[nickjtc]

What scunny said.

Per the manual:

Inspection
1. Turn the engine off, place the motorcycle on the centre stand and shift the transmission into neutral.
2. Check slack in the lower drive chain run midway between the sprockets.
Drive chain slack should be adjusted to allow approximately 15-25mm (5/8"-1.0") vertical movement by hand. Rotate the rear wheel and check drive chain slack as the wheel rotates.
Drive chain slack should remain constant as the wheel rotates. If the chain is slack in one section and taut in another, some links are kinked and binding. Binding can frequently be eliminated by lubrication.

etc etc

Fit a Scottoiler.

[scunny]

well said by the scottoiler rep 

[nickjtc]

well said by the scottoiler rep 

Disclaimer: Nick J has no interest in Messrs Scottoiler, whether it be financial or otherwise!

But for the record, as most of you will have read ad nauseum over the last 2 1/2 years, I will not have a chain driven bike without one. In the 20,000+km I've ridden Sophie (with the aforementioned Scottoiler) I've adjusted the chain.....well actually I cannot remember the last time I adjusted the chain.