Posted by LenNH on November 11, 2007 at 10:13:33 from (75.69.99.42):
In Reply to: Value of this 1938 F-20 posted by Scott Rukke on November 10, 2007 at 15:49:24:
F-20 and others with that motor type (10-20, 15-30/22-36) were designed to run on kerosene or distillate. The big tank is for the kerosene and the small one (the pipe out the back on the F-20) is for gasoline for starting. Eventually, people got tired of the hassle of kerosene and just burned gas. The original manifolds were made to heat the kerosene or distillate, and are easy to spot--on the F-20, there is a big square part around the middle, to heat the intake, and there is a lever that could be moved to a "cool" position if you wanted to run on gasoline only. Most of these levers rusted fast, and if you ever see one of these manifolds on a tractor (they usually rusted through after 20 years or so, and were replaced by aftermarket manifolds made for gasoline--they're easy to spot, too), you'll usually find the lever rusted in one position or the other. The F-20 had either an upright lever that looked something like a throttle, attached to the left side at the back of the gas tank, or a notched rod on the late models with the variable governor (also controlled by a notched rod).
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