New guy with new old bike

[PWBII]

To adjust the cam chain tensioner on a 1969 & 197x Honda SOHC CB750 K, F & A, set the engine to top dead center (TDC) for cylinder #1, then loosen the lock nut and the bolt on the tensioner. After that, the internal plunger will automatically apply the correct tension; simply tighten the bolt and lock nut back in place.

 

[Loki]

Thanks for that, I did mine like that but afterwards saw another method, turning the engine to a specific position then back to another position so the front part of the chain is tight then the tensioner takes up the slack?

Loki

 

[dirtdigger]

Not necessarily dig you fingernail in but the rubber wheel is pliable. If it is rock hard it is bad. You should be able to feel the material "give" just a little if you push on it with you finger nail. if your new on is rock hard you got a bad one or counterfit part. The material is the same as the primary wheel. Even the front guide should be just a little soft and pliable. if any of the parts are rock hard they are bad and can chunk and come apart.

 

[UK K6]

Cam chain tensioning: IIRC, no.1 should be TDC on the compression stroke. I think that's because it is a point where the chain is at its loosest.

 

[PWBII]

UK K6 is correct.

 

[Walmart Ninja]

I opened up the oil pan and checked out the primary chain tensioner wheel. Happily it seems completely intact and the rubber is not hard. Pretty happy about that. Is it worth going into the head to check the cam chain tensioner wheels as well?, as digger said you can't really see it very good anyway. Thanks for helping.

 

[dirtdigger]

Its probably alright, depends on if you are planning on removing engine or going into the engine for other work. If there are no pieces in the pan you may be alright for now

 

[Walmart Ninja]

Thanks digger