Originally Posted by Mark T
I have fixed up the pull-cord somewhat and ran it again. I noticed some intermittant clapping sound from the engine. I am guessing it's the piston clapping against the cylinder wall.
I will be taking the head off again to have a look.
If this is the case, wondering if I should bore and up-size the piston & rings? I've not done this before.

Did you replace the decompressor?

If so I would check the valve stem.cheers2

Regards,
[Linked Image]

Bruce


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