IF
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CHECK
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ENGINE HARD TO START OR ENGINE WILL NOT START
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Fuel tank is empty.
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Fuel system leaks.
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Need cold weather starting aids.
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Wrong engine oil.
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Wrong fuel.
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Water, dirt, or air in fuel system:
Check fuel filter. Drain, flush, fill,
bleed system.
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Dirty or faulty injectors.
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Fuel shut-off solenoid stuck.
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Operator off the seat and parking brake is not locked.
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PTO switch is ON.
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Forward or reverse pedal not in the NEUTRAL position.
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ENGINE RUNS IRREGULARLY OR STALLS
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Faulty thermostat.
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Replace fuel filter element.
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Water, dirt, or air in fuel system:
Drain, flush, fill, bleed.
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Wrong fuel.
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Plugged air intake screen or air cleaner.
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Brake lock not DISENGAGED.
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Fuel pickup off in the tank.
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Fuel tank switch not fully open.
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ENGINE KNOCKS
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Engine oil low.
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Injection pump out of time.
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Faulty thermostat.
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Engine overheating.
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Slow idle speed too slow.
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LOW OIL PRESSURE
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Oil filter plugged.
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Engine oil low. Check for possible oil leaks.
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Wrong engine oil.
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ENGINE LACKS POWER
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Reduce load or reduce speed.
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Plugged air intake screen or air cleaner.
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Fuel filter plugged.
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Wrong fuel.
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Engine overheating.
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Wrong engine oil.
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Faulty thermostat.
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Wrong valve clearance.
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Dirty or faulty injectors.
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Injection pump out of time.
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Attachment not adjusted right.
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Wrong ballast.
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Weight transfer valve in the TRANSFER position.
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Fuel tank switch not fully open.
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Fuel solenoid not fully engaged.
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ENGINE OVERHEATS
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Reduce load or speed.
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Coolant low.
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Faulty radiator cap or fan.
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Loose or faulty alternator belt.
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Dirty intake screen or radiator.
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Cooling system needs flushing.
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Faulty thermostat.
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Faulty water temperature indicator or sender.
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ENGINE USES TOO MUCH OIL
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Plugged intake screen or air cleaner.
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Wrong engine oil.
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Oil leaks.
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Plugged breather.
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No O-ring on drain plug.
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