CB500F2 Cam Chain Adjustment

[Dave M]

Hi, newbie here!

It's a few years since I had my CB750 and I'm hoping to collect my 1978 CB550F2 on Sunday.

I had a test ride yesterday and the carbs need balancing and the cam chain is rattling quietly.

I've not got a manual yet so could some kind person remind me how to tension the cam chain.

I've had a quick look and on the back of the block at the bottom there's a locknut and screw and further up there's a bolt.

I seem to remember the engine is set to 15 degrees after TDC but not sure what to do with the bolts.

Many thanks.

[dave400]

Dave, if nobody with a 550 tells you the procedure I

[Dave M]

Thanks Dave.

Seems very easy. Keep you posted.

[Dave M]

Right.

I loosened the locknut as instructed but the bolt turned as well. I can't get a screwdriver on the slot either.

I've looked at the manual and can't see how the tensioner actually works. Does it matter that the bolt turns with the nut?

[Dave M]

Sorted!

I kept turning the nut and after about half a turn the setscrew stopped turning and the the nut loosened. The setscrew was nice and loose as well.

Nipped it back up again and started the engine. As quiet as a 15k mile motor should sound!

Well pleased.