governor setting on H

Hi, since i have my H it always runs rich at idle. I tried advancing, retarding the timing with little or no effects. I adjusted the carb like it is supposed to: main needle two to three turns out and the mixture idle untill it runs smooth on idle. so I am suspecting the governor adjustment
Now, I noticed that even if I unscrew the idle adjusting speed screw all the way out the engine still runs at about 500 to 600 rpm. I removed the cover in front of the governor and found two adjusting screws that looks like the ''stops'' for the low and high speeds of the engine. If I unscrew the upper screw in the gov. ( the one that stops the shaft from turning when the throttle is at idling position) the engine still runs at 500-600 rpm with the idling adj on the carb fully out.
I noticed an adjustment on top of the governor under the little cover with the steel pipe attached to. Could this be the trouble?
I guess a carb and a tune-up kit would help too

Thanks in advance for any info and opinions

Sounds like you might have a cracked intake intake gasket leaking or manifold bolts loose. A couple possible things to look for.
Jim

The governor has no effect whatsoever on the rich idle condition. The governor only controls carb throttle plate position depending on the throttle handle setting and the RPM.

Therefore it appears you have 2 separate problems:

1 - Rich idle: The carb idle mixture is way out of adjustment. Or the carb is leaking internally and needs attention (rebuild).

2 - Idle RPMs to high: The governor to carb linkage adjustment (the adjustment you discovered beneath the sloped cover atop the governor) is not properly synchronized.

To synchronize the gov to the carb first remove the riser cover. Then remove small cotter pin from the pivot then pull the pivot pin from out of the adjusting block (don't drop the cotter pin into the governor!).

Now set the throttle handle to maximum speed. Next pull up on the adjusting block and on the carb throttle bellcrank and hold both parts there. When properly adjusted the pivot pin should slide easily into place. If it does not, loosen the locknut then turn the adjusting block up or down the threaded connecting rod as required. Then again hold both parts up and reinsert the pivot pin.

When properly synchronized you should be able to slow the idle RPMs low enough to stall the engine by turning out the idle stop screw on the carb.

Hope this helps...