While waiting for the replacement parts to arrive (sometime next week I hope) I started cleaning...
First up: removing the valves. I could borrow the necessary tool from my local garage.
The engine looks less frightening once it's been taken apart...
One of the sides. Right hand side has been cleaned using (very!) fine sanding paper.
One of these pistons has been cleaned. Guess which one.
Finally you can tell the front from the back of the piston.
Left combustion chamber has been cleaned.
Made by Tom?