To increase the engine rpms on a Allis Chalmers 201 engine do I bend the governor cross arm towards the radiator or back away from the radiator?
 
LEAVE THAT ADJUSTMENT ALONE !!! Changing that may increase the speed but will deaden the governor to where it doesn't work well at all !! More speed is done on the other side by insuring the throttle linkage can pull back on the governor spring lever 100% of the way. There might be a throttle stop screw on top of the aluminum cover in that same area. If so, back it clear out. If you need more speed (1700 RPM is top) buy a D-17 governor spring (2,000 RPM) or add an extra spring behind the generator pulling back on the vertical governor arm. WHY do you want to increase the speed?? Is it slow ??
 


Engine rpm is only 1420 at full throttle. have tried adjusting throttle rod at the throttle lever with no big change in engine speed.
 
That's pretty bad. It's like it has an old stretched out WC governor spring in it. Let's start from the beginning. Engine OFF. Hand throttle wide open. Pull the cotter pin on the carb link rod behind the generator. Slip the link rod out of the hole of the vertical governor arm. The length of the link rod should be just right so the carb butterfly is WIDE OPEN (fully pushed to the rear) and this link rod just slips back into the gov arm hole at the same time. This is correct adjustment and synch's the carb to the governor. THERE CANNOT BE ANYTHING CONNECTED TO THIS LINKAGE !! THERE ARE NO SPRINGS ALLOWED !! At this time if the engine speed is too slow, assuming everything else is correct, you need a new governor spring/plunger assembly. On these 70 + year old tractors I HAVE SEEN CHOKE SPRINGS ATTACHED TO PULL FORWARD ON THE GOVERNOR LINKAGE BECAUSE EVERYTHING IS MAL-ADJUSTED. Nothing can be attached to the governor arm or link rod !!!
 
My bad. I guess you didn't say what the application of this "201" engine was. I assumed a model WD tractor.
 
Yes, more information. The gov. spring is behind the cover on the front of the governor.
 

DRAllis checked the governor rod to carb as you said the rod was set just as you said it should be. So sounds as if I need to get a new governor spring installed.
 
As long as there isn't anything connected to that governor linkage on the carb side, yes a new spring and plunger located under the 4 bolt aluminum cover on the front of the governor housing on right side of engine.
 

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