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65TROUBLESHOOTING
TROUBLESHOOTING
If the mini-excavator does not show the desired performance, or when trouble arises, refer to the table below and undertake
appropriate measures.
Trouble Cause Countermeasure
Engine
Starting
difficulties
Lock levers in "UNLOCK"
position
* Bring lock lever into "LOCK" position.
Fuel is too viscous.
* Check fuel tank and filter.
* Remove impurities and water.
* If necessary, replace filter.
Air or water in the fuel
system
* Remove water from the fuel tank.
* Check fuel pipe joint bolts and nuts for looseness.
* Purging of the fuel system (for fuel filter and injection pump,
see "PURGING FUEL SYSTEM" in the chapter.
"OTHER ADJUSTMENTS AND REPLACEMENTS".)
Oil viscosity is so high that
the engine runs sluggishly
in winter.
* Pour hot water over the radiator.
Battery is almost dead;
insufficient compression.
* Recharge battery.
Insufficient
engine power
Low fuel level * Check fuel and add if necessary.
Clogged air cleaner * Clean the air filter element.
Engine suddenly
stops.
Low fuel level
* Check fuel and add if necessary.
* Purge the fuel system.
Abnormal
exhaust gas
color
Poor fuel * Use high quality fuel.
Too much engine oil * Drain engine oil to prescribed oil level.
Water
temperature
in red zone
(Overheating)
Defective seal of the water
pump
* Replace.
Worn or torn fan belt * Adjust or replace.
Thermostat is defect. * Replace.
Coolant level too low * Fill to prescribed level.
Radiator grill or fins are
clogged.
* Clean.
Coolant is contaminated
with rust from the cylinder
head or crank case.
* Replace coolant fluid and add anti-rust.
Defective radiator cap
(Evaporation)
* Replace.
Corroded coolant pipes * Clean.
Continuous operation
under full load
* Reduce load.
85


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