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AC model C ignition timing

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medfarm

04-29-2000 20:14:48




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What is the procedure for installing and timing a distributer on a AC model C? What is the points gap and the advance? Thank You

Ray




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Rick in NC

05-01-2000 07:11:04




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 Re: AC model C ignition timing in reply to medfarm, 04-29-2000 20:14:48  
Ray,

If you have a battery ignition system, the points gap is the same .020 inches. The manual says to time the ignition by lining up the "top dead center" line in the center of the inspection hole on the left side of the torque tube, then turn the distributor until the point gap is .001 inches. My feeler guage doesn't have a .001 blade, so I took my ohm meter and determined that there was current flowing across the points (zero resistance). Then I turned the distributor until the points broke (infinite resistance). It may not be exactly .001 inches, but the tractor runs so well, that I am not going to change it.

Good Luck!

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Darrell (MN)

04-29-2000 21:23:58




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 Re: AC model C ignition timing in reply to medfarm, 04-29-2000 20:14:48  
Ray, Magneto point gap .020, Advance 30*. Timing as follows. Crank engine until #1 piston is approaching top center on its compression stroke and mark "FIRE" appears in the center of inspection opening on left hand side of torque tube. (the easiest way to determine the compression stroke is to remove the front, or number 1 spark plug, and holding your finger over the hole, turn the engine over until air is forced past your finger. When this starts to happen, watch for the timing mark through the hole in the torque tube like it says.) Remove the distributor compartment cover from magneto that is retained by two screws. Turn magneto until the rotor contact lines up with the timing lug in the case (as your looking at the rotor end of the mag, the lug will be in the upper left hand corner). Couple magneto to engine. If rotor does not exactly line up with lug, turn magneto on engine until it does. The sloted hole for the lower bolt is provided for this purpose. Tighten the upper capscrew first. Do not over tighten lower nut. Hope this help you out, Darrell

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