Snapper mower Briggs engine

[tom3]

Strong magnet on the flywheel? New coil, new plug. Not much else to go wrong. Flywheel loose and key sheared again? Should still see spark I think. Sunspots?

 

[MyEngineGuy]

KISS method... Remove the rubber boot from the spark plug wire. Check that the metal connector is well crimped and piercing the insulator, into the wire. Correct as needed with needle n0se pliers, reinstall the insulator boot. The coil should have an air gap, and contact points should be free of rust and damage- look at both flywheel magnets and coil, and hit with a steel brush to clean if needed. Loosely secure the coil so it can be moved by hand. Turn the flywheel until the magnets are facing the coil, it should magnetize and pull it flush, that's 0 inch gap. Without knowing your exact model, a good rule of thumb is about 0.015 in gap. A business card works well if you don't have a feeler gauge, set the business card between the coil and flywheel. Tighten the coil bolts. This should get you spark. If no spark, I would try a known good coil. Yes you can test primary and secondary coil windings by an ohmmeter. Yes, sometimes the coil can breakdown the internal windings or laminates under heat, but since you are testing in no start, cold condition, the static resistance test across the windings should answer your question.

 

[Stoney55]

Did you reset the "air-gap" on the new coil to specs ..??

Yes

 

[Walt 2002]

" key sheared again? "

Given what you said, that'd be my guess, improper torque.

Walt Conner