Chris in Dorset England
CB750 Addict
mine looked like that
Not cracks, my cover has those too, they look like possible faults in the casting die. Clean off the rotor ring contacts with electrical contact cleaner. Check the brushes in the cover for useable length and free moving.Well today I pulled the plugs, valve cover/right side engine cover and changed the oil. I poured some motor oil on the cams, they were bone dry.
I think this looks ok
View attachment 8094
The number two spark plug gave me some grief. At first I thought it was cross threaded but it just had a bit of corrosion on it.
View attachment 8095
Are these cracks? I can't see anything on the outside of the cover.
View attachment 8096
Is this normal?
View attachment 8097
I have an endoscope on order, it should be here tomorrow. Now I'm going to check the valves. At only 8000 miles I hope they're still in spec.
Al
Do NOT rotate engine missing shims-damage will result.
Luck................the part you speak of could be a fluid deflector of some type to prevent the compensation return shot hitting the cover gasket, that lends toward leaking.
I myself would correct any shims at .003" since .002" is effectively zero and WILL burn like that. Why we use .005" as a set-to number instead of the service manual .003", the latter causes a lot of valves to burn for no reason.
Spiffy. Always look at the wear pattern on used shims, most polish only and fine but occasionally you get a specific wear pattern and best not to swap that one to another lobe as it can bring on sudden wear.