Tom 43 said: (quoted from post at 12:35:18 10/27/09) The solenoid controls the LOAD or high speed circuit in the carburetor. Smoking at idle should be cured by backing out the idle mixture screw. On this carburetor counter clockwise is leaner on the IDLE screw. Another possibility is a needle and seat that is intermittently leaking fuel. Another possibility is the idle air bleed or the air supply for the idle air mixture screw being plugged. Still another is a plugged air cleaner. An M Farmall does not need high octane fuel, that is just nonsense.
The idle air bleed screw went away with the M carburetor. The idle mixture screw on the 706 is a fuel adjust screw, not air adjust.
Turning the screw clockwise will go lean, counterclockwise will screw it out and allow a richer mixture. This is just the opposite of the way the adjustment works on the M and H models.
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Today's Featured Article - Uncle Cecil's Super A Lives Again - by Mike Purcell. A week or so out of most of my childhood summers was often spent with my Uncle Cecil and Aunt Sissie in the small East Texas town of Maydelle on their 80 acre farm. Some of my fondest memories of these visits are those of learning to drive a tractor at the helm of Uncle Cecil’s 1948 Farmall Super A. Uncle Cecil was the second owner of this wonderful little tractor, but it was almost as though he had adopted an infant. The original owner was a man from Minnesota who bought her from a local dea
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