Farmall H Mag Drive Timing

Farmall H, HV & Super H, 300 & 350, 1939-1958
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Farmall H Mag Drive Timing

Postby Stanton » Tue Aug 12, 2014 3:10 pm

In the course of refurbishing, the original magneto drive gear was removed and cleaned. The exposed gear has a double "II" mark on it, but I cannot find a corresponding mark of any kind on the idler gear. I read in the I&T repair manual that the magneto drive to idler gear "need not be timed to the engine."

Are any of you familiar with this issue?

If I put #1 cylinder at TDC and set the mag tower to #1, wouldn't that work?

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Re: Farmall H Mag Drive Timing

Postby Eugene » Tue Aug 12, 2014 3:38 pm

Yes. Fine tune the rotor location. Magneto fires when points just open. Static time the magneto. Then double check the rotor location, You might have to adjust the rotor location by a tooth or two.
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