Petter S Type, semi diesel or surface ignition engine. 

didn,t think you were that old. nice engine hope niks starts has easy! keep posting your engines always enjoy them.

Been doing it fourty odd years! Thanks

hello there that's a very nice engine you got there starts very well, I have one like it a Petter S the 21BHP its quite a big engine it is missing the blowlamp stand or dish it is possible to give me some dimensions, please.

60! nik has the same engine but twin flywheels? 12/14 hp.