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I assume you have a magneto. Anyway, it would be best for you to get a manual. I think the reason no one is answering is because it is a fairly involved step by step process. But here goes: 1) Remove plug wires and #1 spark plug (closest to the radiator). Put tractor in neutral. 2) Remove timing inspection plug. (Directly under starter housing on clutch side) 3) Put thumb over #1 spark plug hole and have someone turn until you feel fairly strong pressure (This is compression stroke) Be careful not to confuse with a light pressure from the exhaust sroke) 4) Get a flash light and look through the inspection hole. Turn pulley clockwise until you see a "D" stamped in the flywheel (sometimes these are missing so an alternative is to place a wire down #1 clyinder and turn crank until piston is at top) either of these methods should give you the correct position. 5) Hold the magneto ( like to put the flange in a vise. Put a wire in the mag cap hole with a number 1 on it and hold the other end of the wire (BY THE INSULATION) about 1/8" from the metal mag body. With a wrench turn the impluse unril you get a spark. This may take up to four snaps of the impulse. Hold the impluse in this position. Put the mag on the tractor. Do not tighten the bolts. Turn the engine until you see the "D" in the inspection hole and turn the mag back ofr forth util you hear the impluse snap when the D appears. 6) Put the plug wire on #1 install rest of the wires on in order of rotation of the mag to #3-#4-#2 spark plugs. 7) Start the engine. You may want to fine tune the timeing by listening to the engine and slowly move the mag back and forth until you get a satisfactory sound.
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