Governor problem

I replaced some of the linkage on the throttle recently,
and everything was working well.
(The tractor had set up for many years.)
Something has broken and the only way I can keep the
RPM from going to fast is to hold the throttle lever closed.
When I let go the RPM's go way way up.
The compensator spring and plunger to lever spring are hooked
up and look ok.
The governor lever seems to have more play than it used to have.

Also were the original running board made of checker plate
or like the ones for sale on this site?

(quoted from post at 09:15:05 05/29/17) I replaced some of the linkage on the throttle recently,
and everything was working well.
(The tractor had set up for many years.)
Something has broken and the only way I can keep the
RPM from going to fast is to hold the throttle lever closed.
When I let go the RPM's go way way up.
The compensator spring and plunger to lever spring are hooked
up and look ok.
The governor lever seems to have more play than it used to have.

Also were the original running board made of checker plate
or like the ones for sale on this site?

Click to expand...

The tractor is a mid year 1950 TO20

You need to check the action of the governor itself.

This is best done with an assistant operating the starter and ignition. Be very careful, as this involves disconnecting the throttle linkage and working beside the running engine!

First set the dash lever to a mid position. Disconnect the link from the governor arm to the carb throttle plate at the governor arm.

Hold the disconnected link with your left hand, holding the throttle against the idle stop. With your right hand, hold slight forward pressure against the governor arm.

Have the assistant start the engine, and stand by the ignition switch, just in case...

Now, slowly start to bring the RPM up as you feel for the governor to begin pushing the link back. As you increase the RPM, the governor linkage will reach the end of it's travel. Note the position. That position is where the throttle plate should be held against the idle stop. Adjust the length of the link accordingly, adding a couple turns to the length. That will set the travel of the governor so it will have complete control of the throttle.

After that is set, you can fine tune the max RPM with the U bolt above the governor.

But, if there is no push-back from the governor, something is wrong internally, the front cover will need to come off to see what is wrong.