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Hi Terry, Fairbanks Morse had some tooling issues and couldn't keep up with the demand that AC put on them during those early production years. They second sourced WICO to supply mags when Fairbanks fell short. WICO made good mags and they are vintage original. You can get WICO points and condensors at NAPA and most tractor supply stores. As for a replacement for AC-45 plugs, the Autolite 295 is that plug. You DO NOT want a resistor plug NOR resistive wires. You absolutly must have hard wire conductors or you'll wring your arm off trying to crank that tractor. You can usually get a universal wire set from a tractor supply store for as little as $8.95 and they work fine. Timing is easy. Remove the mag and pull the #1 plug so it's just hanging in the hole by a thread or two. Crank the motor over till you hear the compression hissing past that loose plug. Now look in the flywheel timing hole in the left side of the bell housing (torque tube) and turn the fan backwards until you see the top dead center mark. This is not the FIRE mark. Now keep turning the fan backwards so that the magneto drive is horizontal. Manually work the magneto so that the #3 hole has just fired and reinstall the mag so that it is leaning all the way over onto the block. Crank it over to check that the mag is firing #1 plug when #1 cylinder is on compression stroke. With the TDC mark visible in the side port hole, slowly rotate the mag forward until you hear the impulse snap and tighten it down. With the mag set this way, it will compensate to fire on the FIRE mark once the motor gets running. You can check it with a timing light but it always works for me.
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