Re: Magneto's

Posted by Bob M on September 28, 2004 at 16:32:54 from (66.67.13.141):

In Reply to: Magneto's posted by Steve M on September 28, 2004 at 15:45:52:

This is "quick 'n dirty" test that works for me:

1 - Pull the center wire out of the mag distributor cap. Plug it onto a good spark plug.

2 - Lay the mag on it's side on a bench. Then lay the plug top of the mag so the plug shell is touching the metal mag housing.

3 - With your fingers quickly spin the mag drive coupling clockwise 1/2 turn at a time (you gotta spin it fast so the impulse doesn't catch).

If the mag is good you will get a blue spark with every half turn of the coupling. (You will feel a "bump" in turning resistance at the point where the mag "fires".)

This will verify the high voltage section of the mag. To test the distributor part:

4 - Put the center wire back into the distributor cap.

5 - Take a second plug wire and stick into any of the remaining cap towers, then place the other end on the spark plug like before.

6 - Repeat the spin test above. You should get a spark once every TWO revolutions of the drive coupling.

A word of warning: Do this only with dry hands! If you are at all sweaty, the mag is good and finger is in the wrong spot you run a good chance of being knocked on your a$$ when the mag fires...trust me!

Follow Ups:

Post a Followup Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]