Cub Governor Question

[ChrisFromCLE]

I am reviving my 1950 Cub after 20 years of storage. I rebuilt the carb and it runs well but I have only 50% throttle response. From low I can move the throttle handle to about half way on the quadrant before the governor kicks in and the engine revs up. I tried to adjust the governor linkage but find that there is some slop. It is NOT socket where the rod and key enter. It is in the arm itself. See the circled part on the attached photo (illustration only - not my tractor). The arm rests fully counter clockwise against spring. There is no tension from the spring in this position. The slop comes from the arm needing to rotate clockwise about 12 degrees in order to tension the spring. The spring does not look to be stretched or bent. Adjusting the rod length to take up this slack makes the throttle completely unresponsive.

Should the arm be under spring tension when at rest (low throttle position)? Is there something out of adjustment to take up this slop?

I would appreciate your insight.

Thanks,
Chris from CLE

 

[560Dennis]

This link should help you .

Carburetor-to-Governor Adjustment

After you install the sediment bowl and carburetor (refer to those in the How To Forum), it’s time to adjust the linkage from the carburetor to the governor. Set the operator’s control to half throttle. Remove the pin holding the yoke to the rockshaft arm. Squirt the threaded portion with...

farmallcub.com

Be nice to see inside the unit and the weight pins condition.
Good
I would remove the circle spring and remove the wear in the levers , all I can see , not the whole story just a detail I would not pass up correctly.
You do have lost motion in the governor control rod to the carburetor somewhere. Find and correct for your tractor. See YT parts under Cub .
Working on Farmall C governor , I eliminated all lost motion . From the hand governor control lever all the way to the throttle shaft in the carburetor. Be surprised what that will do to the performance of your tractor .put your hat on tight when you get it fixed .

 

[grandpa Love]

That big spring has probably never been swapped out....it's $10. If your tractor bogs down going up hill or the motor revs way up going down hill you need a new spring. Your other issues are adjustments on the rod going to the carb.