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Magneto help please

F

Farmall Bob09

Member
With the front timing cover off of the H I reinstalled the camshaft gear and got the marks correct with the crank gear. Now the #1 piston is at TDC on the compression stroke, Do I insert the mag into the "hole" and align them two marks with the mark on the cam? How do you go about knowing the rotor pointing at #1 on the cap? I have a manual and read thru some old posts but if someone could walk me thru this it would be great. I havent taken the mag apart at all just need help with the reinstal. thanks as always.
Bob
 
There should be a slotted lug on the back of the mag drive gear on the motor that aligns with the lugs on the mag. To get the mag set up on #1, put the cap on briefly and look a the mag right side up (coil cap on top) from the cap end. #1 is customarily at about 2 o'clock. Make a crayon mark on the mag body that lines up with the center of the #1 wire tower.

Pull the cap and put the rotor on. Turn the drive end of the mag by hand, snapping it by the other positions if needs be until the rotor starts to come up on the mark you made. Slow down and you should come to a point that feels almost like a cammed stop, and you'll find a point where the rotor will stay put. If you should snap past that point so that the rotor and drive end are all afloat and will move back and forth, go around again. Stop at each position to help you geta feel for it and set it up to rest at #1. At that point the lugs between the drive on the motor and the end of the mag should be close enough to inline to assemble and get on with the business of timing.
 
once i get the mag set up to fire on #1 position, do i then insert the mag and align with the camshaft gear? i gave two marks on the same tooth on the mag gear and only one on the cam, they are both on the tooth so how do you get them to mesh? thank you scott
 
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