On Apr 3, 3:24 pm, Bruce in Bangkok wrote:
I would like to make the suggestion that individuals who pose
questions, especially complex questions like the recent Yanmar
governor problem, be encouraged to post the results. What did he/she
do and what was the result.

Sorry not to report back. I certainly would have posted with glee if
I had fixed it. All I ended up doing was taking a small access port
off that though which I could see, but not remove and measure the
springs on the throttle side of the assembly. It all looked lovely in
there but there was a little stiffness on the throttle crank itself.
So I lubed its axle and worked it a bit. I got one disconcerting
"thunk" out of the mechanism, put it all back together and ran it and
got the same failure then ran it again and it worked fine... By
looking at it I did convince myself that the fault was not in the
setting of the torque limiter. The current plan is to take off the
gear casing next time I pull the motor and inspect the bushings and
springs... Meanwhile I will continue to work around it. Many thanks
for your help and mea culpa for my silence.

Cheers,

-- Tom.