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Re: Farmal 450 Diesel starting problems
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Posted by Haas on December 14, 2000 at 16:58:03 from (129.37.117.146):
In Reply to: Farmal 450 Diesel starting problems posted by Eric Lagemann on December 14, 2000 at 10:40:25:
I have a Farmall MD which has the same starting system. Always starts right up. Everything has to be right with your carb and ignition. When you push that lever to change over to gas, it does quite a few things you need to check. 1) The third valve is opened in each cylinder to the chamber in the head that contains the spark plug. The valves have a clearance to set. Could be they are not opening enough. 2) The carburator float is released so gas can flow to the carb. In diesel operation, be float is locked up, shutting off the gas flow. 3) Butterfly valves in the manifold are set so air can flow through the carb. In diesel operation air does not go through the carb. 4)A switch is opened so the magneto is active. The Mag is grounded during diesel operation so there is no spark. All this is controlled by the linkages that are behind the carb and also the throttle linkage set up on the opposite side of the engine. A cross shaft goes through the engine to the linkages behind the carburator. I agree with Jon, you may have carburator problems. If you have spark and it looks like all the switch over stuff is working, first thing to do is take off the carb and check it out.
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