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Problem
engine will not start
engine runs rough
engine seems weak
Machine vibrates
tRoUblesHootInG
Cause
•
Mower deck control is engaged
•
speed control not in the start position
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spark plug wire is off
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Contamination in the carburetor or fuel line
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Fuel shutoff valve is closed
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Clogged fuel filter or fuel line
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empty fuel tank
•
Faulty ignition system
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Faulty carburetor
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Choke control is pulled out with a warm engine
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Clogged fuel filter or jet
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Clogged ventilation valve on the fuel cap
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Fuel tank nearly empty
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Fouled spark plugs
•
spark plug is loose
•
Defective ignition cable
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Defective spark plug electrode
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Defective spark plug connection
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Rich fuel mixture or fuel-air mixture
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Wrong fuel type
•
Water in the fuel
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Clogged air filter
•
Clogged air filter
•
Fouled spark plug
•
Carburetor incorrectly adjusted
•
blades are loose
•
blades are incorrectly balanced
•
engine is loose
37
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