I have a pair of 2GM20's which should be very similar to the 1GM. Bleeding never
takes more the a few minutes. If the lever on the fuel pump doesn't work, it means
the cam that normally drives it from inside the engine is not lined up. It you turn
the engine over a bit (rotate the pulley a few inches) it should then work a lot
better.


"Chris Butler" wrote in message
om...
I just finished winterizing my 2002 1GM10 Yanmar Diesel (that runs on
a Menger 19' Cat boat) and think there must be a better way of
bleeding the fuel system. For the past three seasons I have changed
the water seperator and paper filter on the engine at the end of every
season. Then I begin the huge task of pumping the Raycor water
seperator for the next hour until fuel starts flowing into the engine.
After that I start pumping the lever on the oil pump (1 hour). Once I
get fuel into the lines the rest of the bleeding goes very easy. My
hand afterwards is sore and battered! I have tried cranking the engine
for short bursts with the compression lever up (this does not seem to
help). Is there anyway to prime or help this process along the way?