High idle clitch

[yellercub]

I just buttoned up everything on my new to me cub, after having the hood of to repair wiring. while I had the hood of I did general maintenance, set points, timing . etc, I am having 2 issues now, one is electrical and I will address that in another post.
Here is my issue, When I advance my throttle rapidly the governor "hunts" vroom vroom vroom...... and usually settles down. If I lower throttle it will even out and run smooth. If I advance the throttle slowly no problem, It "hunted" once for me when I moved the Touch Control lever at fast idle. Issue seems to lessen as engine warms. Also carb. leaked after first start up, but has not since. I have not moved the tractor yet, this is all sitting still. I am sure this is something being out of adjustment, I just don't know what.
I am sure one of you guys knows what's going on, that's why I love this forum.

[Bob McCarty]

Adjust the governor to carb linkage and see if that helps. Do it by the directions in the GSS-1411 Blue Ribbon service manual available in the PDF Manuals upper left under "quick links".

[tst]

make sure you have good gas flow, lack of fuel will make the governor jumpy also

[Glen]

Hi,
The linkage should be checked and adjusted right, like Bob said above. If it is, there is a bumper spring adjustment on the front of the governor. It is used to stop the condition you described above.
Below is a pic from TM Tractor showing it, it is on the right in the pic.

Loosen the lock nut, while holding the screw head, back off the nut some, and turn the screw in 1/2 turn. Run the engine. If it doesn't run steady, turn the screw in another 1/2 turn. Run engine again, and see if it works better. Repeat if needed.

I would stop the engine when adjusting the screw, it is close to the fan.

It doesn't take much turning the screw in to make a difference.
Don't turn the screw in too far, it can interfere with the slow idle speed, the Cub service manual says. That means it won't slow down enough.
Tighten the lock nut when done adjusting the screw. Hold the screw in place, so it's adjustment doesn't change when turning the nut.

[Waif]

Follow Bob and Glen ,then after linkage is set good ,check air/fuel mix screw at carb. to adjust so you can bump the throttle up from idle to high range and back multiple times without dogging out.

[yellercub]

OK, I set the linkage per instructions before I put the hood on,so I hope I did that correctly. I tried the bumper screw. Made about three turns in, doesn't seem to have made much of a difference. Even backed it out just for the heck of it. As long as I make slow advances it runs like a dream, same goes for the TC lever. any rapid changes results in "hunting". Drop back 3 notches, she evens out and purrs, advance slowly, no problem.
if I mess with the air/fuel adjustment, that will change my low idle, will it not? It really does not bog down when I advance quickly, but goes right into "hunt" mood.
I think the fuel flow is A OK. The previous owner said he rebuilt or had the carb. rebuilt, and it appears to have been. The cub starts easy and idles smooth, but a sudden load makes the gov. hunt.
It is getting late here, so tomorrow maybe I will try to give her a run and see what happens. I think this cub sat a long time, and I only ran it an hour or two before I found the wiring was going to pieces and I took the hood off to fix it. I repacked the wheel bearings while it was sitting and the grease was very stiff and dry. Maybe running her will loosen things up. I really don't want to pull the gov. right now, but wonder if it is stiff.
I really appreciate your help and if you can think of anything else please let me know.

[Waif]

[inairam]

If you made the adjustments above and feel you are good with the Carb, I would consider replacing the governor spring. http://www.tmtractor.com/new/gv/357fp.htm

I like to do this on new to me cubs when I get the hood off. If nothing else it takes a 50-year-old spring out of the troubleshooting equation. If you replace it go through the linkage procedure again. Also, check for air leaks around the carb flange and carb /manifold flange.

[Jim Becker]

If adjusting the bumper spring seems to have no effect, unscrew it completely and inspect the spring. It could be rusty and/or broken.

[Flemmingth]

You may have same problem as I had, see viewtopic.php?f=1&t=101027#p801694

[HIGHNOX]

1965 Cub
Does anyone know where I can get a new Governor "Bumper" Spring/Bolt/Nut assembly? (like the one in the picture above)?
I have searched a lot of parts places, no joy...
Thank you.

EDIT! Using your nomenclature from above, I found the spring, I guess I will need to make a bolt.
http://www.tmtractor.com/new/gv/1006fp.htm

[inairam]

contact jp salvage a sponsor. You may be able to buy a whole governer for what it will take you to make the bolt correctly.