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Re: MD
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Posted by Haas on February 14, 2004 at 05:55:13 from (12.65.6.20):
In Reply to: MD posted by Jeff on February 13, 2004 at 18:03:24:
Never saw an MD with a foot throttle. When you shut down, you should switch back to gas first, then shut off the gas to the carb and let it run out. Always be sure to switch the lever back to diesel after it quits, as the decompression valves need to be on the seats as they cool to keep them from warping. As to the ignition, the switch is operated by the gas to diesel switch over lever. The switch is in a chamber in the front end of the intake manifold. Should be a wire going from the magneto to that chamber. The gas to diesel switch over lever does 4 things: 1) Opens/closes the decompression valves to the spark plug chambers to change the compression ratio for gas or diesel operation. 2)changes butterfly valves in the manifold to send air (or shut it off) through the carburetor. 3)Raises/releases the carburetor float to shut off gas flow when in the diesel position. 4) Shuts off the ignition (grounds the magneto) when in the diesel position. As to your hand throttle being stuck, the throttle and switch over device located on the left hand side of the engine block has a "clutch" that is adjustable to adjust the throttle tension. That clutch is there to eliminate any play in the speed control linkage to reduce surging. Usually these are pretty tight and it takes a strong arm to change the speed control setting. By the way, how are you shutting it off it the hand throttle control is stuck?? Can you do that with the foot throttle?? Usual way to shut off the diesel is to push the hand throttle all the way down to the shut off position.
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