41
10 Causes of Failures and Remedial Actions
Caution
⚫
If the machine malfunctions, be sure to stop the engine, apply the parking brake and remove the
ignition key and then diagnose the problem by referring to the table below.
Phenomenon
Cause
Action
En
g
in
e
The starter does not
turn when the key
switch is turned.
The auxiliary shift lever is not in
the
“Start” position.
Put the auxiliary shift lever in the
“Start” position and then turn
the key switch to the
“ST” position.
Loose or disconnected wire
terminal, or loose, disconnected or
corroded battery terminal
Retighten or reconnect the terminals.
Clean and securely tighten the terminals.
Apply grease to prevent rusting.
Blown fuse
Replace the fuse with new one.
Low battery voltage
Add battery fluid and charge the battery. Replace the battery.
Faulty key switch
Contact the dealer where you purchased your machine from.
Faulty cell motor
Contact the dealer where you purchased your machine from.
Faulty switch
Contact the dealer where you purchased your machine from.
The starter turns,
but the engine does
not start.
No fuel.
Air is mixed into fuel.
Add fuel to the fuel tank and bleed air.
Fuel does not flow.
Contact the dealer where you purchased your machine from.
The battery is almost flat and does
not provide enough rotational
force to turn the engine.
Charge the battery.
If the battery does not charge, replace it with new one.
Engine revolutions
are irregular.
Air has entered the fuel system.
Bleed air.
Water is mixed into fuel.
Drain fuel from the fuel tank/fuel filter and add new fuel.
Clogged fuel injection nozzle
Contact the dealer where you purchased your machine from.
Clogged fuel filter
Contact the dealer where you purchased your machine from.
En
g
in
e
re
la
te
d
Insufficient engine
output
Insufficient fuel
Inspect the fuel system (for entry of air).
Clogged air cleaner
Contact the dealer where you purchased your machine from.
Insufficient compression
Contact the dealer where you purchased your machine from.
Deterioration of fuel injection state Contact the dealer where you purchased your machine from.
Inappropriate intake/exhaust valve
gap
Contact the dealer where you purchased your machine from.
Undesirable exhaust
color
Low-grade fuel
Change to high-grade fuel.
Too much engine oil
Adjust the amount of oil to the specified level.
Deterioration of fuel injection state Contact the dealer where you purchased your machine from.
The engine
overheated (the
water temperature
warning lamp turned
on).
Insufficient cooling water or
leakage of water
Contact the dealer where you purchased your machine from.
Loose fan belt
Contact the dealer where you purchased your machine from.
Insufficient engine oil
Add oil to the specified level.
Low engine oil viscosity
Change to oil of appropriate viscosity.
Faulty pressure switch
Contact the dealer where you purchased your machine from.
Faulty oil lamp
Contact the dealer where you purchased your machine from.
The glow lamp does
not turn on.
Blown fuse
Replace the fuse with new one.
The charge lamp
turned on during
operation.
Faulty regulator
Contact the dealer where you purchased your machine from.
Loose or damaged fan belt
Contact the dealer where you purchased your machine from.
