This is an update on a problem I was having with my Farmall 400 earlier in the month. Thanks to advice from members of this forum I was able to get the RPM on the 400 to increase (as was repeatedly suggested, the linkages were not moving the lever on the back of the governor enough for the high idle screw to hit its stop). Now I have adjusted/replaced the worn linkages and the tractor definitely has more throttle. However, with the increased RPM I am noticing significant surging from the governor. The tractor is fluctuating a couple hundred RPM with the speed control lever in the same position. Sorry to keep going back to the well, but what causes the engine to surge significantly? Thank you for your time.
Sincerely,
Peter Markel
Sincerely,
Peter Markel