Engine size for 1984 h40

[d. meadows]

Can someone tell me the correct engine size on a 1984 H40? ( Yanmar ) Also is it still part of the QM model or the GM model

 

[John]

yanmar

Not sure about the 1984 model but my 1988 40 has a Yanmar 4JH(E) rated at 44 hp. Like all the Yanmars I've owned (others have been GM series) it runs great. Uses a little more fuel than my 3GM did but it has half again as much hp.