Jerry the spec number is on the engine not the serial number number plate. The engine number will read something like
Model number K161S
Spec number 42***
Serial number ******
That number will make sure the engine will fit in your application. I do not know what the three stars are in the spec number but one on our owners should have this for you. Roger
Model number K161S
Spec number 42***
Serial number ******
That number will make sure the engine will fit in your application. I do not know what the three stars are in the spec number but one on our owners should have this for you. Roger