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Engine Hard to Start or Will Not Start
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Incorrect starting procedure
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Review starting procedure
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Blown fuse
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Check fuse 32 and 24
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No fuel
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Check fuel tank
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Air in fuel line
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Bleed fuel line (turn key to
RUN
for 60 seconds with engine off)
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Cold weather
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Use cold weather starting aids
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Slow starter speed
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See Starter Cranks Slowly
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Crankcase oil too heavy
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Use correct oil viscosity
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Incorrect type of fuel
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Consult fuel supplier; use correct fuel type for operating conditions
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Water, dirt, or air in fuel system
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Drain, flush, fill and bleed system
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Clogged fuel filter
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Replace filter elements
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Dirty or faulty injectors
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Have your John Deere dealer check injectors
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Injection pump shut-off not reset
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Turn key switch to OFF then to ON
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Engine Knocks
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Insufficient oil
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Add oil
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During warm up, pilot injection system will activate and deactivate depending on engine operating temperature
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This is normal operation
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Low coolant temperature
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Replace thermostats
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Engine overheating
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See Engine Overheats
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| Symptom |
Problem |
Solution |
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Engine Runs Irregularly or Stalls Frequently
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Low coolant temperature
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Replace thermostats
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Clogged fuel filters
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Replace filter elements
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Water, dirt, or air in fuel system
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Drain, flush, fill and bleed system
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Vent on fuel tank obstructed
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Clean vent under rear cab panel
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Dirty or faulty injectors
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Have your John Deere dealer check injectors
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Below Normal Engine Temperature
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Defective thermostat
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Replace thermostats
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Defective temperature gauge or sender
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See your John Deere dealer
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Variable speed fan running too fast
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See your John Deere dealer
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Variable Fan Speed Drive Surges at Low Engine RPM
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NOT normal
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See your John Deere dealer
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Throttle Does Not Allow Full Engine RPM
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Field Cruise may be on and limiting max engine rpm
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Check the settings for Field Cruise in the CommandCenter. Insure full rpm has been selected on the display
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Cold oil can limit engine speed to 1500 rpm
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Warm up transmission/hydraulic oil. If problem persists, see your John Deere dealer.
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| Symptom |
Problem |
Solution |
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Lack of Power
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Engine overloaded
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Reduce load or shift to lower gear
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Low fast idle speed
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Insure Field Cruise is set to max rpm
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If problem persists, see your John Deere dealer
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Intake air restriction
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Service air cleaner
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Clogged fuel filters
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Replace fuel filter elements
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Incorrect type of fuel
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Use correct fuel
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Overheated engine
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See Engine Overheats
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Below normal engine temperature
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Remove and check thermostats
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Incorrect valve clearance
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See your John Deere dealer
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Dirty or faulty injectors
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Have your John Deere dealer check injectors
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Turbocharger not functioning
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See your John Deere dealer
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Leaking exhaust manifold gasket
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See your John Deere dealer
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Implement incorrectly adjusted
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See implement operator's manual
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Restricted fuel inlet on tank
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Clean or replace fuel line
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Incorrect ballast
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Adjust ballast to load, see section 75, Performance Ballasting
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Low Oil Pressure
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Low oil level
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Add oil
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Incorrect type of oil
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Drain, fill crankcase with correct quality and viscosity of oil
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High Oil Consumption
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Crankcase oil too light
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Use correct viscosity oil
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Oil leaks
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Check for leaks in lines, around gaskets and drain plug
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Defective turbocharger
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See your John Deere dealer
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Restricted engine breather tube
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Unclog breather tube
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| Symptom |
Problem |
Solution |
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Engine Emits Smoke
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Incorrect type of fuel
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Use correct fuel
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Clogged or dirty air cleaner
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Service air cleaner
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Engine overloaded
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Reduce load or shift to a low gear
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Injection nozzles dirty
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See your John Deere dealer
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Turbocharger not functioning
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See your John Deere dealer
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Engine Overheats
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Dirty radiator core, oil cooler, or grille screens
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Remove all trash and clean coolers
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Engine overloaded
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Shift to lower gear or reduce load
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Low engine oil level
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Check oil level. Add oil as required
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Low coolant level
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Fill de-aeration tank and recovery tank to correct level. Check radiator and hoses for loose connections or leaks
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Faulty radiator cap
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Replace radiator cap
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Loose or defective fan belt
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Check and replace belt as needed
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Fan drive running too slow
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Make sure bleed screw under fan drive is fully closed
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Cooling system needs flushing
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Flush cooling system
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Defective thermostat
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Replace thermostats
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Defective temperature gauge or sender
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See your John Deere dealer
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High Fuel Consumption
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Clogged or dirty air cleaner
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Service air cleaner
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Engine overloaded
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Reduce load or shift to lower gear
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Injection nozzles dirty
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See your John Deere dealer
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Implement incorrectly adjusted
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See implement operator's manual
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Excessive ballast
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Adjust ballast to load. See section 75, Performance Ballasting
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