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View Full Version : Craftsman 917.273640 Won't start


greenbrier
Mar 14, 2012, 06:38 PM
I have a 18.5 hp 917.273640 riding mower that won't start. It has fire to the plug, new gas, used fuel conditioner during the off months. If you crank and crank you get a real loud back fire. Ideas?

DG
Mar 14, 2012, 08:15 PM
Sounds like the flywheel key has sheared .
But I would have my valve clearance checked .
Luck