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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 30087
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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I have a murray 30'' sit on mower. it starts and runs

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I have a murray 30'' sit on mower. it starts and runs for about 5 minutes cutting grass and then gets slower and slower, engine slightly missing, and then will grind to a halt. when I let it cool down it will restart and the senario is repeated. any ideas?
When it quits,see if you have spark, use a spare spark plug, and when it quits, remove spark plug wire , attach the spare spark plug, and with the spark plug grounded to the metal of engine, see if it has spark when cranking. No spark means the coil is bad.
Customer: replied 1 year ago.
Tried that, plug still sparks.
Gravity feed from tank, or does it have pulse fuel pump?
Curtis B. and other Small Engine Specialists are ready to help you
Fuel starvation , check the carburetor.