Posted by Janicholson on August 14, 2007 at 13:13:33 from (71.87.39.51):
In Reply to: Farmall B - rough idle posted by Dave H (MI) on August 14, 2007 at 12:54:54:
If the idle mixture screw has no effect, the passages are plugged in that circuit. A carb spray with a red tube stuch in the hole might do it before tearing it down. The throttle is adjusted as follows (some idle end slop is very normal, and not wrong at all. On the governor, there is a link going to the throttle lever at the steering quadrant. Disconnect that from the governor arm it was attached to. Put the throttle control lever as far toward fast as it will go in the notches. At the governor move the governor lever as far as it will go (in that same wide open direction). Now adjust the length of the rod so that it is just a tiny bit off of perfect alignment so that there will be a little tension on the rod when it is all the way at full throttle. this assures full movement of the governor when the lever at the operator end is moved to wide open. The idle position (again will have some no effect motion, ignore it. This procedure in not adjusting the linkage to the carb, only the throttle lever to gov. The gov to carb is similar in that the governor lever (on the left side of engine) is pulled against a spring to the rear (I think), and the carb is held wideopen (engine off), and the linkage is set to place the rod at just that length. These will not cause overspeeding, they just make sure the linkages operat the full range of possible motion. Good luck, JimN
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