Flywheel & Armature Distance


Old 06-24-01, 11:55 AM
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I had to replace the flywheel and ring gear on a briggs and stratton 15.5 horse riding lawn mower by sears and now when I try and start the engine all it does is turn over and back-fire. I believe the gap between the armature/magneto to the flywheel is incorrect. What should this distance be ?
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Old 06-24-01, 03:36 PM
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Hello and Welcome Dane to the Do It Yourself Web Site and my Small Engine forum.

Air gap distance is .0125

If you need to find a non metal piece of that approzimate thickness, it could be a thin business card or a piece of computer printer paper folded in half.

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Old 06-28-01, 08:00 PM
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danelieblong, Are you sure you got the flywheel key put back when going together. Make sure to tighten the flywheel to specs or until you feel you will break something because if not the first time it hits it will sheer the flywheel key and this will cause backfires amomg other things. I seriously doubt backfiring would come from to much or to little coil clearance....Best of Luck....Mike

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