Posted by Bob on January 02, 2010 at 13:12:35 from (69.178.228.68):
In Reply to: Cub ignition posted by garyandnancy on January 02, 2010 at 12:55:56:
If you have a magneto, it SHOULD be an IH J-4 and look like this picture:
In EITHER mag or Kettering ignition systems the coil "fires" JUST AS THE POINTS OPEN.
The mag CAN be converted to battery ignition by disconnecting it's internal coil and connecting the points to an EXTERNAL automotive coil. It's a good idea to use a condensor that matches the application of the coil you are using 'cause of variations in the CAPACITY (uF) which MAY have a bad effect on point life.
The rotor-high-tension-terminal thing gets a little weird with a mag 'cause of the impulse.
There's gears under the little cover behind the rotor that need to be timed. (I'm more familiar with the full-size version of that mag, the H-4 used on the larger tractors, someone else will have to fill you in on this one!)
For SOME information on servicing and timing the mag, cut this link and paste it into your browser:
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