Did not had any planes for the engine otherwise then cleaning it up. But sadly a bad engine noise made me question that.
Decided to remove the engine, and see what it was.

Here you have the engine noise, have been reading that the carburetor can make that kind off sound to.
But this was not the case.

When exhaust is removed, a quick look inside the port does not show any good.

When removing the engine, other questions/problems came along. Looks like the plug cable was a old TV cable

Engine came relative easy out, roughly there where three bolts holding it

Looks like the piston is worn out

Have to see how to clean this out, could be that I need to open up the engine.

New piston, ready to go.

Looking nice.