IDLE SPEED ADJUSTMENT

8543bob · Post by **8543bob** » Tue Jan 05, 2010 3:53 am

GOOD MORNING, MY M RUNS GREAT. 15F YESTERDAY BLOWING 40MPH. PULLED THE CHOKE PULLED THE THROTTLE A BIT, HIT THE STARTER AND OFF SHE WENT. AS GOOD AS MY TAURUS. TOOK HER FOR A RIDE ON THE BEACH ALL OK. SINCE I HAVE OWNED HER THE IDLE SPEED SEEMS, BY EAR, A LITTLE HIGH. WHAT ITS SUPPOSED TO BE SET AT? I WILL PHOTO TACH IT. AND WHERE IS THE IDLE SPEED ADJUSTMENT? THANKS BOB

MSeriesRebuild · Post by **MSeriesRebuild** » Tue Jan 05, 2010 9:42 am

Adjustment screw is on the linkage arm near where it slips on the governor shaft. We set the idle no lower than 600, 650 is better I think. I don't like it set too low as the oil pressure drops way down at idle on a well run engine. I have seen bearings beat out caused by idling excessively at a very low RPM. Watch the oil pressure reading as you adjust the idle, be sure the engine is warmed up to normal operating temp before adjusting.