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All, I've got a Craftsman walk-behind mower with a Honda 5.5hp engine (model 917-388820). The engine is misfiring or backfiring. I can see flame out of the exhaust sometimes. The spark plug is dry fouled. I've cleaned it and re-gapped it to 0.030, per the manual. The RPM seem low and of...

All, I've got a Craftsman walk-behind mower with a Honda 5.5hp engine (model 917-388820). The engine is misfiring or backfiring. I can see flame out of the exhaust sometimes. The spark plug is dry fouled. I've cleaned it and re-gapped it to 0.030, per the manual. The RPM seem low and of...

All, I've got a Craftsman walk-behind mower with a Honda 5.5hp engine (model 917-388820). The engine is misfiring or backfiring. I can see flame out of the exhaust sometimes. The spark plug is dry fouled. I've cleaned it and re-gapped it to 0.030, per the manual. The RPM seem low and of...