
OMM124509
Issue A9
F925 and F935 Front Mower
F925 Serial No. (150001 - )
F935 Serial No. (150001 - )
Engine
Engine (Continued)
Engine (Continued)
Engine (Continued)
Front Mower
Electrical System (Continued)
Brakes And Steering
Mowing And Bagging
Copyright© Deere & Company
|

Troubleshooting
Engine
IF
|
CHECK
|
ENGINE HARD TO START OR ENGINE WILL NOT START
|
Fuel tank is empty.
|
Fuel system leaks.
|
Need cold weather starting aids.
|
Wrong engine oil.
|
Wrong fuel.
|
Water, dirt, or air in fuel system:
Check fuel filter. Drain, flush, fill,
bleed system.
|
Dirty or faulty injectors.
|
Fuel shut-off solenoid stuck.
|
Operator off the seat and parking brake is not locked.
|
PTO switch is ON.
|
Forward or reverse pedal not in the NEUTRAL position.
|
ENGINE KNOCKS
|
Engine oil low.
|
Injection pump out of time.
|
Faulty thermostat.
|
Engine overheating.
|
Slow idle speed too slow.
|
Engine (Continued)
IF
|
CHECK
|
ENGINE DOES NOT RUN PROPERLY OR STALLS
|
Faulty thermostat.
|
Replace fuel filter element.
|
Water, dirt, or air in fuel system:
Drain, flush, fill, bleed.
|
Wrong fuel.
|
Plugged air intake screen or air cleaner.
|
Brake lock not DISENGAGED.
|
Fuel pickup off in the tank.
|
Fuel tank switch not fully open.
|
Dirty or faulty injectors.
|
LOW OIL PRESSURE
|
Oil filter plugged.
|
Engine oil low. Check for possible oil leaks.
|
Wrong engine oil.
|
ENGINE OVERHEATS
|
Reduce load or speed.
|
Coolant low.
|
Faulty radiator cap or fan.
|
Loose or faulty alternator belt.
|
Dirty intake screen or radiator.
|
Cooling system needs flushing.
|
Faulty thermostat.
|
Faulty water temperature indicator or sender.
|
Engine (Continued)
IF
|
CHECK
|
ENGINE LACKS POWER
|
Reduce load or reduce speed.
|
Plugged air intake screen or air cleaner.
|
Fuel filter plugged.
|
Wrong fuel.
|
Engine overheating.
|
Wrong engine oil.
|
Faulty thermostat.
|
Wrong valve clearance.
|
Dirty or faulty injectors.
|
Injection pump out of time.
|
Attachment not adjusted right.
|
Wrong ballast.
|
Weight transfer valve in the TRANSFER position.
|
Fuel tank switch not fully open.
|
Fuel solenoid not fully engaged.
|
ENGINE USES TOO MUCH OIL
|
Plugged intake screen or air cleaner.
|
Wrong engine oil.
|
Oil leaks.
|
Plugged breather.
|
No O-ring on drain plug.
|
Engine (Continued)
IF
|
CHECK
|
ENGINE USES TOO MUCH FUEL
|
Plugged air intake system.
|
Engine overloaded.
|
Wrong valve clearance.
|
Injection nozzles dirty.
|
Injection pump out of time.
|
Faulty thermostat.
|
Fuel leaks.
|
Plugged crankcase vent tube.
|
Front Mower
IF
|
CHECK
|
EXCESSIVE VIBRATION
|
Engine speed too slow.
|
Driveshaft worn.
|
Throttle linkage out of adjustment.
|
WILL NOT MOVE WITH ENGINE RUNNING
|
Park brake locked.
|
Transmission oil low.
|
Faulty charge pump.
|
MACHINE CREEPS WITH ENGINE RUNNING AND TRAVEL PEDALS IN THE NEUTRAL POSITION
|
Linkage needs adjustment.
|
Park brake not locked.
|
Electrical System
IF
|
CHECK
|
BATTERY WILL NOT TAKE A CHARGE
|
Clean or tighten connections.
|
Electrolyte low.
|
Dead cell.
|
Alternator belt loose or faulty.
|
Faulty alternator.
|
BATTERY INDICATOR STAYS ON WHEN ENGINE IS RUNNING
|
Slow engine speed.
|
Faulty battery or alternator.
|
Loose alternator belt.
|
Low electrolyte.
|
LIGHTS DO NOT WORK
|
Fuse blown.
|
Light burnt out.
|
STARTER WILL NOT WORK
|
Fuse blown.
|
Clean or tighten connections.
|
Low battery output.
|
Neutral start switch faulty or not adjusted right.
|
Key switch or starter faulty.
|
Push PTO knob down.
|
Operator not on seat.
|
Electrical System (Continued)
IF
|
CHECK
|
STARTER TURNS SLOWLY
|
Low battery output.
|
Low battery power.
|
Wrong engine oil.
|
Clean or tighten connections.
|
ENGINE STOPS WHEN FORWARD OR REVERSE TRAVEL PEDAL IS DEPRESSED
|
Park brake knob is not in the top of the slot.
|
Brakes And Steering
IF
|
CHECK
|
BRAKES NOT WORKING
|
Worn or damaged linkage.
|
Worn brake shoes.
|
Oil or grease on brake drum.
|
Brake shoes wet.
|
STEERING NOT WORKING RIGHT
|
Tire inflation wrong.
|
Linkage needs lubrication.
|
Toe-in needs adjustment.
|
Mowing And Bagging
IF
|
IF
|
GRASS NOT BEING PICKED UP COMPLETELY
|
Mow grass only when dry.
|
Reduce mower ground speed.
|
Empty 2-Bag Bagger
|
Clean screen in hopper top.
|
Unplug chute.
|
Check cutting edge of mower blades.
|
Increase engine speed to full throttle.
|
Check for worn or slipping belt.
|
COLLECTION CHUTE PLUGGED
|
Mow grass ONLY when dry.
|
Empty bags.
|
Clean screen in hopper top.
|
Reduce mower ground speed.
|
STOP mower when bags are full.
|
Monitor bags/hopper more frequently.
|
|