
9-18
SECTION 9 –
MISCELLANEOUS
TROUBLESHOOTING
Problem
Possible Cause
Suggested Remedy
Engine will not crank
• Dead battery
• Poor battery connections
• Neutral Safety Switch
• Starter or starter relay
• Lock-out Switch in LOCKED
position
• Charge or replace battery
• Clean and tighten
• Adjust (replace, if necessary)
• Test, rebuild, or replace
• Inspect switch
Engine will not start
• Fuel tanks empty
• Clogged fuel filters
• Cold weather
• Low starter speed
• Fill fuel tanks
• Replace fuel filters
• Refer to the engine
manufacturer’s user guide
• Check starter and battery
Engine overheats
• Engine overload
• Dirty radiator core/grille
screens
• Faulty radiator cap
• Loose or faulty fan belt
• Faulty thermostat
• Low coolant level
• Reduce load
• Remove foreign material and
clean all items
• Replace cap
• Tighten or replace fan belt
• Replace thermostat
• Refill to proper level with
recommended coolant
Engine misfires:
runs uneven/low power
• Water in fuel
• Dirty air cleaner element
• Poor grade of fuel
• Fuel tank vent clogged
• Clogged fuel filters
• Drain, flush, replace filters, fill
system
• Replace element
• Drain system, change to a
better grade fuel
• Open fuel tank vent (in cap)
• Replace fuel filters
Engine knocks
• Low oil level in crankcase
• Cold engine
• Add oil to full mark
• Allow proper warm-up period,
refer to the engine
manufacturer’s user guide for
cold weather starting
Machine will not move in either
direction
• Engine speed too low
• Oil level in hydraulic reservoir
low
• Control linkage
• Clogged filter
• Faulty hydrostatic pump
• Air leak in suction line
• Low charge pressure
• Set engine at operating RPM
before moving the machine
• Fill hydraulic reservoir to
proper level with approved oil
• Repair or replace
• Replace filter
• Replace pump
• Inspect and tighten all fittings
on suction line
• Contact your local John Deere
dealer for assistance
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