TROUBLESHOOTING
ENGINE TROUBLESHOOTING
If something is wrong with the engine, refer to the following table for the cause of it and its corrective measure.
Trouble Cause Countermeasure
Engine is difficult to start or will not start.
• No fuel flow.
• Check the fuel tank and the fuel filter.
Replace the filter if necessary
.
•
Air or water is in the fuel system.
• Check to see if the fuel line coupler bolt and nut are tight.
• Bleed the fuel system.
See 1. Bleeding the fuel system on page 94.
• Remove water from the system and replace the fuel filter.
• In winter, oil viscosity increases,
and engine revolution is slow.
• Use oils of different viscosity, depending on ambient tem-
peratures.
• Use engine block heater (option).
• Battery becomes weak and the
engine does not turn over quick
enough.
• Clean battery cables and terminals.
• Charge the battery
.
• In cold weather, always remove the battery from the engine,
charge and store the battery indoors.
Install the battery on the tractor only when the tractor is go-
ing to be used.
Insufficient engine power.
• Insufficient or dirty fuel. • Check the fuel system.
• The air cleaner is clogged. • Clean or replace the air cleaner element.
Engine stops suddenly. • Insufficient fuel.
• Refuel.
• Bleed the fuel system if necessary.
Exhaust fumes are colored.
Black
• Fuel quality is poor. • Change the fuel and the fuel filter.
• Too much oil. • Check the proper amount of oil.
• The air cleaner is clogged. • Clean or replace the air cleaner element.
Blue white
• The inside of exhaust muffler is
damp from fuel.
• Heat the muffler by applying load to the engine.
• Injection nozzle trouble. • Check the injection nozzle.
• Fuel quality is poor. • Change the fuel and fuel filter.
Engine overheats.
• Engine overloaded. • Shift to lower gear or reduce load.
• Low coolant level.
• Fill cooling system to the correct level.
Check the radiator and the hoses for loose connections or
leaks.
• Loose or damaged fan belt. • Adjust or replace the fan belt.
• Dirty radiator core or grille
screens.
• Remove all trash.
• Coolant flow route corroded. • Flush the cooling system.
Engine does not stop when key switch is
turned off.
• Fuse blown (15 A). • Replace the fuse.
If you have any questions, consult your local KUBOTA Dealer.
ENGINE TROUBLESHOOTING TROUBLESHOOTING
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