Kubota WSM 05-E4B Series Workshop Manual page 90

4. ENGINE
Symptom
The oil pressure is low
The oil pressure is high
The engine is overheated
The battery discharges quickly
4-8
Probable cause and checking
procedure
8. Excessive oil clearance of
rocker arm
9. The oil passage is clogged
10. The type of oil used is incor-
rect
11. The oil pump is damaged
1. The type of oil used is incor-
rect
2. The relief valve is damaged
1. The engine oil is not sufficient
2. The fan belt is broken or the
fan belt tension is too loose
3. The coolant is not sufficient
4. The radiator net and the radia-
tor fin are clogged with dust
5. There is corrosion in the inner
side of the radiator
6. There is clogged in the coolant
flow route
7. The radiator or radiator cap is
damaged
8. The load is too much
9. The head gasket is damaged
10. Incorrect injection timing
11. The fuel used is incorrect
1. The battery electrolyte is not
sufficient
2.The fan belt slips
3.The wiring is disconnected
4.The rectifier is damaged
5.The alternator is damaged
6.The battery is damaged
Solution
Replace
Clean
Use the specified type of oil
Replace
Use the specified type of oil
Replace
Fill oil to the specified amount
Replace or adjust
Fill to the specified amount
Clean
Clean or replace
Clean or replace
Replace
Reduce the load
Replace
Adjust
Replace the specified fuel
Fill distilled water and charge
Adjust belt tension or replace
Connect
Replace
Replace
Replace
05-E4B SERIES,05-E4BG SERIES
SERVICING
1. Troubleshooting
Refer-
ence
page
4-33
－
3-1
4-72
4-57
4-73
3-1
－
3-6
3-13
－
－
－
－
4-20
－
4-34
3-17
3-1
3-10
3-13
－
－
－
－
KiSC issued 03, 2023 A