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Question by  Kilgasto (26)

How do you set the air gap and magneto on a lawn mower?

I am doing some basic maintenance on my mower and need direction.

 
+9

Answer by  BlueEyes3b5 (121)

Ya gotta go to a small engine shop or a home depot and pick up a gap tester. The air gap between a flywhell and the coil should be. 012 but that could vary depending on the make and model of your mower.

 
+8

Answer by  Annika5 (171)

You can purchase a Magneto Coil and and Condenser Tester which will check magneto windings using a comparison method. There is also a bench test that you do using a metal bench and a piece of isolating material like wood or plastic that is placed between the coil and bench.

 
+6

Answer by  ParisianParlay (30)

I have no clue how to set the air gap but I would think that your owner manual should have some troubleshooting tips in it. If not try calling the manufacturer. Most companies are more than happy to spend a few minutes explaining how to do repairs on their product.

Reply by SookiesHere (119):
had to change solenoid on my lawn tractor this spring and called the company. they helped me out a lot. i was able to do a tune up for the first time even without having the book.  add a comment
 
+5

Answer by  Anonymous

Move the flywheel magnet to the opposite side of the magneto. loosen the screws that hold the magneto on, place a credit card between the magneto and the flywheel and retighten the screws. Remove the credit card. It's set.

 
+0

Answer by  Anonymous

Most lawnmower magnetos set at .010 to .012. I measured a credit card and found that it was almost .030. This is too thick. A piece of writting paper is .003, so if you fold it four times you have a cheap feeler gage. Hope this helps.

 
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