New-to-me Wd45 low rpm

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Good morning gentlemen. 

I’ve had a friends WD45 sitting about the farm for a bit. I’d like to put it to work. Starts generally well. New carb, supposedly rebuilt engine. 

It fails to maintain rpm while running. Bogs under load from 4’ brush hog in medium grass.

I adjusted the carb/governor arm linkage by bending. It was 3/16” off. While tractor is off, linkage sits just into the gov arm hole with carb at max input. Gov arm on hand throttle/gov body side sits fully engaged at max rpm. After starting, gov arm reduces rpm at carb, hand throttle does not increase rpm. 

Can someone post pictures of the throttle side spring linkage, and the carb-side spring linkage? I believe they’re incorrectly installed. 

Hand throttle is fully engaged about 3/4 of the way down, but gov arm on gov side is fully engaged for max throttle. 

Do you gentleman know what may be the culprit here? Thank you 

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
OldManLarry Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 04 Sep 2025 Location: Nebraska Points: 3	Post Options Post Reply Quote OldManLarry Report Post Thanks(0) Quote Reply Topic: New-to-me Wd45 low rpm Posted: 3 hours 59 minutes ago at 11:11am
	Good morning gentlemen. I’ve had a friends WD45 sitting about the farm for a bit. I’d like to put it to work. Starts generally well. New carb, supposedly rebuilt engine. It fails to maintain rpm while running. Bogs under load from 4’ brush hog in medium grass. I adjusted the carb/governor arm linkage by bending. It was 3/16” off. While tractor is off, linkage sits just into the gov arm hole with carb at max input. Gov arm on hand throttle/gov body side sits fully engaged at max rpm. After starting, gov arm reduces rpm at carb, hand throttle does not increase rpm. Can someone post pictures of the throttle side spring linkage, and the carb-side spring linkage? I believe they’re incorrectly installed. Hand throttle is fully engaged about 3/4 of the way down, but gov arm on gov side is fully engaged for max throttle. Do you gentleman know what may be the culprit here? Thank you

Sponsored Links

OldManLarry Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 04 Sep 2025 Location: Nebraska Points: 3	Post Options Post Reply Quote OldManLarry Report Post Thanks(0) Quote Reply Posted: 3 hours 57 minutes ago at 11:13am
	After shutting down tractor, carb and gov arm return to max throttle position. There’s a large dent, watermelon could sit down in it, in the underside of the oil pan. I see oil lines running to the governor. Maybe there’s a correlation there? Thank you sirs, I really appreciate your time and knowledge Edited by OldManLarry - 3 hours 25 minutes ago at 11:45am