Posted by Athol Carr on August 05, 2009 at 18:37:40 from (122.57.31.118):
In Reply to: F 14 Fuel system posted by JLE on August 05, 2009 at 05:01:36:
They had to use a down-draft carburetor because when the engine was designed they did not allow enough space between the push-rods to get the spark plugs in. The spark plugs had to go on the other side of the engine under the manifold and thus the standard up-draft carburetor could not be used (you would not be able to get at the spark plugs). The 12 engine has the magneto on the right with all the spark plug cables going in a tube around the back of the head to get to the plugs. Changing plugs with a hot manifold is not too easy and normal plug socket wrenches cannot be used. With the down-draft carburetor they had to use a pump to get the fuel to it as it is not now below the fuel tank as is required for the up-draft carburetor. In the Farmall A engine, the same bore and stroke, they angled the push-rods to give enough space for the spark plugs, though only just enough, In the later Farmall A engines the space was made a little larger so that conventional spark plug wrenches could be used. The moral is, one fix to correct one mistake usually involves more fixes to correct the effects of the first fix.
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Today's Featured Article - Storing Your Tractor - by Staff. If your tractor is going to be stored for any length of time, a few precautionary measures are helpful in preserving various parts, also in avoiding future difficulty. Store tractor under cover. If impossible to place tractor under cover, be sure to cover air stack and exhaust pipe. Drain radiator and engine block. To avoid gum content collections, drain both fuel tanks and carburetor. Leave radiator and fuel caps slightly loose to protect gaskets. Block tractor up to remove weight from tires and to keep tires from contact with moist floor.
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