Yanmar 2GM or 2QM15...?
I have been trying to learn everything about my engine in the hopes to be able to perform all the maint work on it myself.
I purchased the service manual for the 2GM and 2QM15 engine.
In the manual the pictures and the layout of the 2GM match my engine perfectly, but the engine marking clearly says it is a 2QM15. ???
The 2 engine designs are very different, I am positive that my engine design matched the schematics in the manual for the 2GM yet it is stamped on the side of the engine as an 2QM15...
Anyone have any input...it was built in 1977-1983 time frame...