IH 300U Governor Issues

[manitobaprairies]

Hi everyone I'm out of ideas here, so hopefully I can get some guidance form all of you.
Over the winter, the carb on my 300U got rebuilt, and since then I have no throttle control.
I took the whole linkage apart between the governor and the carb a couple days ago and made sure the linkage was engaged to the carb properly on the butterfly valve and I made sure there was no binding anywhere.
When she starts, she goes straight to full throttle, and moving the throttle up and down does nothing. Governor weights are good, moves from low stop to high stop with no change though. Only things that's been done is a carb rebuild. Could something in there be causing this?
Thanks all.

 

[Bob in wc Ia.]

Sounds like the idle speed adjusting screw on the carb is turned in too far, not
allowing the throttle plate to close to low idle.

 

[Janicholson]

The only two places that could be caused are in the governor (very unlikely) or the tab and slot in the connection at the carb. A very bright
LED lamp, and 2 diopter reading glasses will help. I know you said it was in place. I would ask you to take another look. Jim

 

[manitobaprairies]

This is the third or fourth time I've checked it now, I'm almost 100% confident I got it in place this time. Once I got it lined up this last time, I held the end of the linkage on top of the governor in place while I clamped everything down and then tried pulling it out to see if it fell out. That's why I feel like its something wrong with the carb.
When the carb isn't on, I can move the linkage in full rotations, and once it's in, it can move about 90 degrees.

 

[Janicholson]

If the hand lever is at idle, the governor linkages should put the rod going to the carb under control toward idle. If it moves there is an
issue with linkage to the rod. Half throttle, the rod in the tube should be full throttle (these are with the engine shut off) Jim

 

[Bob in wc Ia.]

Since the only thing that changed was rebuilding the carb, I agree with Jim that the trouble is not in the governor. The throttle plate (butterfly) can be assembled far enough out of proper alignment to cause a fast idle. To really check this , drop the carb down far enough to see if the butterfly will close completely. Bob

 

[manitobaprairies]

I agree with both of you too.
The throttle arm is a little loose, but it's sloppy at the control lever end, it holds tight when the levee is at idle, so I think that's fine.
I'm going to pull the carb and take a look at the throttle plate now.

 

[504]

The ventura is upside down,don t ask me how I know it will go in that way.

 

[manitobaprairies]

I have a feeling I'm about to find out the same thing.
I didn't get a chance to get to it last weekend, but something tells me it's going to work a lot better once I flip it over...