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CB 500 resurrection

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Sesman:
There is indeed “a knack” . Study the manual carefully. The trick is to start with the chain on the right side of the cam sprocket, locate one bolt then slowly turn the cam to locate the second bolt. Trust me. Providing you have the correct number of chain links it will work…it’s just a fiddle. It might take a couple of goes to ensure the timing is correct.

Bryanj:
Look at the cam sprocket and you can see where it will drop down more, chain not on sproket but alongside fit cam through both from lh side if memory is right get chain on sprocket with the sprocket dropped down then walk it round sprocket till marks in correct place, use large bladed screwdriver to lift sprocket onto cam.

This will only work if you have fitted the front cushion in the correct place as per book

Oddjob:
Fit tensioner and make sure the bottom of it locates in the slot in the lower crankcase. Release adjusting nut, push blade back as far as it will go and then lock the adjusting nut. Then fit head.

Fitting the camchain is just something you get used to. First time is just learning, after that it becomes easier and easier. As Bryan says, locate sprocket on cam loosely, just let it dangle, fit cam through chain from left hand side, drop into place, fit chain on sprocket and as Bryan describes walk the chain round until the marks on the sprocket line up parallel to the head surface. Line the mark in the cam as per manual and then lift the sprocket on with a screwdriver. Check alignment before fitting any bolts, sometimes it looks right but is a tooth out when it's mounted, in which case knock it off and redo after moving chain a link. 

Sesman:
Start from this position and do as Ken and Bryan suggest. It’s a faff, but it works.

gary123:
Thanks all. had a couple of beers now so will look in the morning.

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