Farmall H Carburetor Initial Settings

[paticpatic]

Does this sound good for a 1949 Farmall H Carburetor Initial Settings

Set Fuel Adjusting Screw 3 turns off of seat
Set Idle Adjusting Screw 1 turn off of seat
Set Throttle Stop Screw 1.5 turns Open

I know where the Fuel and Idle screws are, but where is the Throttle Stop screw?

 

[gene bender]

Idle adjusting is fuel mixture and Throttle stop is RPMs at idle

 

[John M]

Where the tube that goes over to the governor attaches, just below the hole on the carb for the bolt.

 

[rustyfarmall]

Idle adjusting screw should be 1 1/2 turns out from seated.

Idle speed screw needs to be turned IN until it just contacts the throttle shaft, and then give it just a wee bit more. This is best done while the carb is in your hands and you can place a finger on the throttle plate and FEEL how much the adjustment screw has been turned.

 

[FBH44]

Here's my notes on how I adjust my H carb;
Make sure the float isn?t sticking or touching the insides of the float chamber. Some previous advice was to use a Dremel tool and smooth the insides of the float chamber so the float doesn?t rub or touch. Pretty important.
Set the float so the top of it rests 1 27/32" above the flat surface of the float chamber.
[Note a new float might already be set correctly.]

INITIAL settings are as follows to get the engine started;
Main fuel adjusting screw; big screw facing down at an angle, towards the rear, at the bottom of the carb; 2 1/2 to 3 turns open. This main screw turns clock-wise for leaner mixture. [This screw adjusts fuel.]
Idle-air-mixture screw; smaller screw facing forwards, on upper left-hand side of carb; 1 to 1 1/2 turns open. This idle screw turns counter-clockwise for leaner. [This screw adjusts air.]
Idle speed screw; faces outboard, at the top of the carb; set for 450 rpm, and make sure the governor correctly engages in the slot. [This screw adjusts RPM?s.]

FINAL settings are as follows;
Get the engine warmed up, and idling.
Turn OUT the small idle-air-mixture screw until rough running, then turn in until engine idles smooth. (Mine is set at 1 turn open.)
Rev it up, wide open, warmed up, then turn the big main fuel adjusting screw IN until rough, then out til smooth, then 1/4 turn to 1/2 turn further out. (Mine is set at 1 turn open. Other advice has been to set it at 2 1/2 turns open for pulling implements.)

Engine should rev up smoothly and evenly.
Too Lean = stumble, sputter, damaged melted plugs.
Correct = tan plugs.
Too Rich = back smoke, black sooty plugs.

 

[paticpatic]

FBH44, Excellent notes, I will give them a try.

 

[the tractor vet]

Everybody has there way is it correct ?????? . I have mine and i do a lot of carb work . Your somewhat close as for curb idle i go by sight in relatiion to butterfly to throat idle mixture i go with one and a half turns off seat then once warmed then go for the fine tune as long as eveything else has been set and gone thru like a major tune up including valve set going over the dist. and setting timing along with new plugs wires cap and rotor . Just rebuilding a carb or thinking you rebuilt a carb for the most part was not the main problem .