EF494T OM
72
TROUBLESHOOTING
In case of abnormality of machine, stop the engine and locate a problem by referring to the following table.
1. Engine
parts
PROBLEM POSSIBLE
CAUSE
RESPONSE
Won't start by main switch
Shift lever in N?
Set each shift levers in N. Under this condition,
turn the main switch to START.
Is battery liquid at normal level?
Battery nor discharged?
Add the battery liquid to the normal level. Charge
the battery.
Check the battery terminals for
looseness or rust.
Clean and fasten the terminals. Apply grease
coating to avoid rusting.
Main fuse blown
Replace the fuse with new one.
Switch trouble
Have it repaired by the service representative.
Starter trouble
Have it repaired by the service representative.
Self-starter running but the
engine fails to start
No fuel
Add the fuel and remove air.
Air in the fuel
Remove air from the fuel.
Fuel cock in the C position
Put the fuel cock in the 0 position.
Engine runs irregularly
Air in the fuel supply system
Bleed air.
Water mixed in the fuel
Remove water and replace with light oil
Jet nozzle clogged
Replace or repair the nozzle.
Clogged fuel filter
Clean or replace the filter element.
Engine overheating
Lack of cooling water
Add cooling water.
Loosened or damaged fan belt
Adjust the tension of belt or replace the belt with
new one.
Clogged radiator fins
Clean the radiator fins.
Running out of engine oil
Add engine oil.
Overloaded
Reduce the load.
Low engine power
Clogged air cleaner
Check the air cleaner.
Burnt nozzle
Have it repaired by the service representative.
Low compression
Have it repaired by the service representative.
Valve clearance incorrectly
adjusted
Have it repaired by the service representative.
Incorrect timing of fuel jet
Have it repaired by the service representative.
Oil pressure lamp lighting
Lack of engine oil
Add engine oil to the normal level.
Low engine oil viscosity
Use the oil with adequate viscosity.
Damaged pressure switch
Replace the switch.
Damaged oil pump
Have it repaired by the service representative.
Charge lamp lighting
Damaged alternator
Have it repaired by the service representative.
Loosened or damaged fan belt
Adjust the tension of the belt or replace the belt.