The rebuild of Hornet HJ of 1946
Serial Number 5362
The cylinder i reasonably good just a decoke followed by a sand blast and a coat of black paint looks as if the saw was shelved many years ago and i'm lucky the exhaust port was closed by the piston but enough rust and excess carbon locked her up but not anymore i'll reringing her and fitting new gaskets as the bottom end is really good.
Updated 21st January 2012
Rings should be easy enough to source
at 57mm x 2mm x 3of
I believe Vespa scoota  rings will do the job
Magneto Eisemann

Model AM-1
Assy no H27-636
Serial 47-03841

Rotation clockwise looking from the rear

Engine Serial No 5362
A new set of 57mm x 2 mm rings out of a Mac 7-55 or 99 should give the Hornet a new lease on life.
Just got another Magneto off ebay for spares i imagine the internals maybe the same as the AM-1 inside
Got a good magneto coming and its off a Hornet HJ  Type AM-1
A set of points for the AM series