T
Thomas Dunne
I have a 1982 27 Hunter and I'm the original owner. My 1GM Yanmar runs well but I experience a 300 - 400 rpm flucuation in the engine rpms when running along. I'll set the throttle to say 3000 rpm and as I cruise along the engine will drop to 2600 - 2700 and then run up to 3000 or so without any change in the throttle setting. I've checked the linkage and it looks and feels OK to me. Any help would be greatly apprecitated as this is the only problem I've been unable to diagnose and resolve.