Troubleshooting
Area
Engine
Malfunction
Abnormal noises or vibrations
are made in or around the
engine
Excessive engine oil
Engine overheating
Excessive fuel consumption
Excessive black smoke
(Abnormal exhaust)
White smoke or blue smoke
comes out. (Abnormal exhaust)
Unit does not move with HST
lever in forward or reverse.
Unit moves even when HST
lever is in neutral position.
Not effective
Excessive play of brake pedal.
Heavy steering
Cannot drive straight
Abnormal vibration of the
chassis
Possible cause
• Looseness of engine mount-
ing bolts
• Others
• Engine oil leak
• Insufficient engine oil
• Blower housing and cooling
fin clogging
• Fuel leak from fuel system
• Clogged air cleaner
• Choke not opened completely
• Poor compression
• Clogged air cleaner
• Excessive oil intake
• Poor fuel
• An excessive amount of
engine oil is put in.
• Improper fuel
• Worn cylinder or piston ring
• Insufficient HST oil
• Parking brake is applied.
• HST speed shift neutral posi-
tion adjustment not correct.
• Worn out brake lining
• Oil penetrates within brake
drum.
• Water penetrates inside of
drum.
• Worn out tire
• Incorrect adjustment
• Incorrect tire air pressure
• Insufficient greasing for king
pin
• Malfunction inside of steering
gear
• Incorrect tie-rod adjustment
• Incorrect tire air pressure
adjustment
• Loose tire fixing bolt
• Breakage of wheel bearing
• Crack of tire
Corrective action
→ Check and carry out additional
tightening.
→ Consult dealer
→ Check and repair.
→ Replenish. (See page 30)
→ Clean. (See page 37)
→ Check and repair.
(Consult dealer.)
→ Clean or replace.
(See pages 36)
→ Put choke to FULL position.
(See page 17)
→ Check and repair.
(Consult dealer.)
→ Clean or replace.
(See pages 36)
→ After checking adjust oil
volume. (See page 30)
→ Replace fuel.
→ After checking adjust oil
volume. (See page 30)
→ Replace fuel.
→ Check and repair.
(Consult dealer.)
→ Replenish. (See page 32)
→ Release parking brake lock
lever. (See page 18)
→ Adjust. (Consult dealer.)
→ Replace lining.
(Ask dealer to do the job.)
→ Replace oil seal.
(Ask dealer to do the job.)
→ Engine brake some times to
dry water inside of drum.
→ Replace tire.
→ Adjust. (See page 39)
→ Adjust. (See page 40)
→ Lubricate. (See page 34)
→ Repair.
(Ask dealer to do the job.)
→ Adjust.
→ Adjust tire air pressure.
(See page 40)
→ Retighten.
→ Replace.
(Ask dealer to do the job.)
→ Replace.
Power
transmission
system
Brake system
Steering
system
Chassis
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