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A valve snapped and blew the piston into pieces
and the crank pushed the bits through the upper case!
The carburator full of aluminum scrap...
...and so was the cylinder head intake.
I found these parts (of a piston) in the exhaust system
The spark plug looks really healthy!
Does this intake valve need an adjustment?
What about the exhaust clearance? ;-)
...or at least "some" polishing! Haaa Haaa!
The wrist pin took some heavy load...
...and the sleeve had a rough time