Riding Mower Will Not Start

My 12 HP Craftsman riding mower (Model 917.254551) will not start although the motor will crank. I have changed the battery, coil, and throttle cable. There doesn't appear to be any spark when testing at the spark plug. There are gas vapors when the air filter is removed and the engine cranked. What should I check in order to get a spark at the plug?

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By William

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September 9, 20130 found this helpful
Best Answer

Valve seat may be loose or broken. Had this happen to me and everywhere I looked, the answer was "Flywheel key". my key was fine. Valve seat was off. Fixed and good to go.

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July 12, 20130 found this helpful

I just got a 10 hp mower it ran at the house I got it at ran when I got home. I wash it and clean it all up. Started it and it ran for 30 feet and stop running. Turns over but no spark at plug. Can smell gas even when I don't have throttle up. What's up with it?

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July 23, 20140 found this helpful

Your magneto is bad.

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