C governor

SDE · Jun 19, 2022

When the tractor is running, the throttle lever going to the carburetor, is being moved continually by the governor. With the engine stopped, I can move this lever about a 1/4 inch or more without the shaft moving the lever on the other side. After I shimmed the clevis to reduce the play in it, the tractor still ran at an erratic speed, but it is to a lesser range of RPMs. So I don't think the surging is related to either the carb. or the distributor. Do I have to remove the governor housing to repair the slop in the governor? When removing the front governor housing, will there be components that will try to escape? I thought that one of my manuals covered this tractor, but I wasn't able to find it.
TY
SDE
While looking for a manual, I found my bill of sale from when I bought it. I have had it since 88.

wore out · Jun 19, 2022

It's a carburetor issue, something is clogged or amiss on the carb so it can't make a smooth transition from the idle to the load circuit.

This post was edited by wore out on 06/18/2022 at 10:59 pm.

SDE · Jun 19, 2022

I had removed the carburetor and dis assembled it. I then had it on my woodstove in a pan of water, to boil it. There was only one brass jet that I did not remove and that was because the slot was too damaged to remove it. I think it is clean, but that might not be as true as I think it is, if it is still the problem.
TY
SDE

used red MN · Jun 19, 2022

You got your cart in front of the horse. Next time grab the linkage going to the carb and hold it still. If the engine runs smooth then it is the governor. If it continues to vary the RPM with the linkage held still the carb is the problem. More times then not it is the carb so hopefully you are fixing the right thing.

Charlie M · Jun 19, 2022

Before taking things apart you want make sure the linkage is adjusted correctly from the governor to the carb. To do that take the pin out of the clevis on the carb side and push the throttle wide open. Then move the yoke from the governor and the arm from the carb as far as they will travel toward the carb. When adjusted correctly the pin will go back in. The other thing to look at is on the governor its self. When you look at it there is an adjustment screw, I believe on the bottom of the governor. Inside that is a spring that helps to keep the governor from surging. I have 4 tractors with that governor and all of them had a broken spring when I removed the screw and all had the parts of the spring stuck in the housing. You can put in a new spring and make the adjustment. It needs to be screwed in until it starts to affect low RPM's. My tractors will surge like you describe when I first start them and give them too much throttle immediately. They stop with moving the throttle back and once they are running OK I can then give them more gas.

560Dennis · Jun 19, 2022

Theres areal small hole in in the zenith carburetor for the idle circuit . It plugs up. Use a .04 drill ,rotate by hand to clear it out of crusty build up .

dewy · Jun 21, 2022

long torch tip cleaners may help an blow it out

C governor

SDE

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wore out

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SDE

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used red MN

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Charlie M

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560Dennis

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dewy

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