On Thu, 3 Apr 2008 20:00:58 -0700 (PDT), "
wrote:

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.

I wasn't "pin pointing" you, sorry if it sounded as though I was,
simply using your problem as an example of something that I'd like to
learn more about as there are zillions of Yanmar engines and I'd like
to know how to fix that problem.

I read a reference to one of your posts, quoted in part by Roger, that
sounded as though the RPM was only unstable at low RPM, I remember
something about 1,000 RPM.

Bruce-in-Bangkok
(correct email address for reply)