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OT - Fairbanks Morse FM Magneto timing
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Posted by Jason Z in MO on November 07, 2005 at 07:26:59 from (68.92.80.146):
I asked this question on the stationary engine site. Thought I would ask here, lots of knowledge on the JD board. I have Wisconsin AKN with a Fairbanks Morse FM XD1B7 magneto. I got her running but having trouble with lack of power and governor hunting. I check the static timing and the impulse is firing at TDC correctly but the running timing using a timing light is about 30+ degrees advanced. The book says it should be 17 degrees but it doesn"t say how to adjust it... and I sure can"t figure it out! I pulled the mag off and don"t see a way to adjust the advance like the Wico type mag. The magneto mounts to the engine with two bolts but timing is not adjustable. I assume the advance is built into the mag but is it adjustable? Maybe it is fixed and I don't have the correct mag...
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