Area Malfunction Possible cause Corrective action
Engine
Abnormal noises or vibrations
from in or around the engine
* Looseness of engine mounting
bolts
→ Check and carry out additional
tightening.
* Others → Consult dealer
Excessive engine oil * Engine oil leak → Check and repair.
Engine overheating * Insufficient engine oil → Add. (See page 49)
* Blower housing and cooling fin
clogging
→ Clean. (See page 53)
Excessive fuel consumption * Fuel leak from fuel system → Check and repair.
(Consult dealer.)
* Clogged air cleaner → Clean or replace.
(See pages 52)
Excessive black smoke
(Abnormal exhaust)
* Choke not opened completely → Put choke to FULL position.
* Poor compression → Check and repair.
(Consult dealer.)
* Clogged air cleaner → Clean or replace.
(See pages 52)
* Excessive oil intake → After checking adjust oil
volume. (See page 49)
* Poor fuel → Replace fuel.
White smoke or blue smoke
comes out. (Abnormal
exhaust)
* An excessive amount of engine
oil added.
→ After checking adjust oil
volume. (See page 49)
* Improper fuel → Replace fuel.
* Worn cylinder or piston ring → Check and repair.
(Consult dealer.)
Power
transmission
system
Unit does not move with HST
lever in forward or reverse.
* Insufficient HST oil → Add. (See page 57)
* Parking brake is applied. → Release parking brake lock
lever.
Unit moves even when HST
lever is in neutral position.
* HST speed shift neutral position
adjustment not correct.
→ Adjust. (Consult dealer.)
Brake system
Not effective * Worn out brake lining → Replace lining.
(Consult dealer.)
* Oil penetrates within brake
drum.
→ Replace oil seal.
(Consult dealer.)
* Water penetrates inside of
drum.
→ Engine brake to dry water
inside of drum.
* Worn out tire → Replace tire.
Excessive play of brake pedal. * Incorrect adjustment → Adjust. (See page 62)
Steering
system
Heavy steering * Incorrect tire air pressure → Adjust. (See page 63)
* Malfunction inside of steering
gear
→ Repair.
(Consult dealer.)
Cannot drive straight * Incorrect tie-rod adjustment → Adjust.
Chassis
Abnormal vibration of the
chassis
* Incorrect tire air pressure
adjustment
→ Adjust tire air pressure.
(See page 63)
* Loose tire fixing bolt → Retighten.
* Breakage of wheel bearing → Replace.
(Consult dealer.)
* Crack of tire → Replace.
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