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Engine Will Not Start
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Brake not pushed down.
PTO/RIO switch in on position.
Upper (switch) fuse blown.
Fuel shut-off valve closed.
Improper fuel.
Dirty or faulty injectors, see your John Deere dealer
Plugged fuel filter.
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Engine Is Hard to Start
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Loose or corroded electrical connections.
Stale or dirty fuel.
Battery voltage is too low.
Improper fuel.
Plugged fuel filter.
Dirty or faulty injectors, see your John Deere dealer.
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Engine Misfires Under Load
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Stale or dirty fuel.
Improper fuel.
Plugged fuel filter.
Dirty or faulty injectors, see your John Deere dealer
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Engine Runs Unevenly
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Fuel line or fuel filter plugged.
Stale or dirty fuel.
Improper fuel.
Loose electrical connections.
Air Restriction Indicator - Air cleaner element plugged.
Dirty or faulty injectors, see your John Deere dealer.
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Engine Overheats
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Engine air intake screens plugged.
Radiator screen or fins plugged.
Engine oil low.
Engine operated too long at slow idle speed.
Coolant low.
Loose or defective fan/alternator belt.
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Engine Loses Power
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Engine overheating.
Improper fuel.
Too much oil in engine.
Air Restriction Indicator - Air cleaner element plugged.
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Engine Stops When Brake Is Disengaged
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Seat switch not engaged.
Seat switch disconnected or broken.
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PTO Stops
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Engine overheated. Allow engine to run and cool until needle
on temperature gauge returns to the green range.
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