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Mower backfires and not start - Garden

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Sounds typical of a broken key on the flywheel which allows the timing to fire at the wrong time. Flywheel on a mower is under the pull start mechanism housing. Caused by hitting something solid with the blade and the momentum of the engine shaft cracks or shears the metal key part. Remove the flywheel carefully and put in a new key.

Posted on Jul 29, 2013

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