My Murray 11ho Select 1 Mowere cranks but will not start.

tug.cap, If seat safety switch test OK, could have either fuel delivery or ignition spark issue. If the fuel flow valve is off, the tank is empty or the fuel line/filter is clogged, fuel shut off solenoid faulty if equipped, faulty pump if equipped, dirty/damaged carburetor, gasoline will fail reach inside cylinder and engine will not start. A bad spark plug or failed ignition system/parts points, condenser,coils on older mowers, or faulty electronic ignition on newer mowers can result in weak/no spark not allow fuel to ignite. Below is a video to show testing seat switch and some trouble shooting links that may help in diagnosing your riders problem. Good luck.

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https://www.youtube.com/watch?v=a3dvvcpW...

http://www4.briggsandstratton.com/miscpd...

http://www.mtdparts.com/equipment/mtdpar...

https://www.briggsandstratton.com/na/en_...

https://www.briggsandstratton.com/na/en_...