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84
TROUBLESHOOTING
TROUBLESHOOTING
If the machine does not perform as expected, or if trouble arises, refer to the table below undertake the appropriate
measures.
Trouble
Starting difficulties
Insufficient engine
power
Engine suddenly
stops.
Abnormal exhaust
Engine
gas color
Water
temperature
in red zone
(Overheating)
Cause
Fuel is too viscous.
Air or water in the fuel system
Fuse is blown out.
Oil viscosity is too high the
engine runs sluggishly in winter.
Battery is almost dead;
insufficient compression.
Low fuel level
Clogged air cleaner
Low fuel level
Poor fuel
Too much engine oil
Defective seal of the water
pump
Worn or torn V-belt
Thermostat is defective.
Coolant level too low
Radiator grill or fins are clogged. * Clean.
Coolant is contaminated with
rust from the cylinder head or
crank case.
Defective radiator cap
(Evaporation)
Corroded coolant pipes
Continuous operation under full
load
Cylinder head gasket is
damaged (Coolant loss).
Engine oil level too low
Maladjustment of fuel injection
Use of poor fuel
Countermeasure
* Check fuel tank and filter.
* Remove impurities and water.
* If necessary, replace filter.
* Remove water from the fuel tank.
* Check fuel pipe joint bolts and nuts for looseness.
* Purging of the fuel system (for fuel filter and supply
pump, see "PURGING OF THE FUEL SYSTEM" in .
"OTHER ADJUSTMENTS AND
REPLACEMENTS" section.)
* Check the fuse and replace it with a same-capacity
one as required.
* Use the engine block heater (option).
* Recharge battery.
* Check fuel and add if necessary.
* Clean the air cleaner element.
* Check fuel and add if necessary.
* Purge the fuel system.
* Use high quality fuel.
* Drain engine oil to prescribed oil level.
* Replace.
* Adjust or replace.
* Replace.
* Fill to prescribed level.
* Replace coolant fluid and add anti-rust.
* Replace.
* Clean.
* Reduce load.
* Replace.
* Fill to prescribed level.
* Readjust ignition timing.
* Use prescribed fuel.
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