Hi,
I've rebuilt the top end of my '72 CL 350 twin and now I'm having trouble adjusting the valves. I replaced the old head, cam, cam case, and side covers(bearings) with parts off an older model; they came from a single, used bike. The valves won't adjust properly because the rocker pins just keep turning when I tighten up the lock nut.
I've tried messing with the end play on the camshaft( it's good now) and I changed the o-rings on the rocker pins. None of this has worked.
I noticed finally that the older side covers/bearings had a counter-sink where the o-ring fits into the cover; the parts I installed did not have this counter-sunk hole. I'm thinking that this is why the rocker pins don't seat correctly.
I plan to take my replacement parts to a machine shop I know to have the counter-sink hole drilled into them. Does anyone agree or disagree with this?
Thanks in advance.