>
>date plate on it circa 1943. There is no build
> plate on the engine, but the generator portion is ONAN. The engine is
> water cooled, two cylinder, and both pistons move up and down together
> (both fire at same time).
>
I want to add: It is 4-cycle, and turns at 1800 rpm. It is rated 3000
watts. The model number on the generator build plate is W3M. The
alternator end is ONAN, but that build plate does not reference the
motor, and there is no other build plate.
Thanks,
DP...