EF393T OM
68
3. Hydraulic system
PROBLEM CAUSE
REMEDY
Implement not raises
Low oil level
Fill system with proper oil.
Hydraulic stop valve closed
Open stop valve.
Excessive load on hitch
Reduce load.
Hydraulic oil too cold
Allow oil to warm up.
Hydraulic oil filter clogged
Replace filter.
Defective hydraulic pump or control
valve
See your YANMAR dealer.
Oil leaks
Check oil leaks.
Hitch drops slowly or does
not drop
Hydraulic stop valve closed
Open stop valve.
Slow return valve set slow
Open valve and adjust drop speed.
System drops too fast
Slow return valve set fast
Close valve and adjust drop speed.
Improper oil
Use oil with proper viscosity.
System overheating
Incorrect oil viscosity
Drain and fill oil with proper viscosity.
Low oil level
Fill to proper oil level.
Dirty oil
Drain and fill clean oil.
Keeping steering wheel at the end
Release steering wheel.
Control lever not returned to neutral
position when using implement
Return lever to neutral position.
4. Power train
PROBLEM CAUSE
REMEDY
Abnormal noise
Transmission oil level low
Add proper type of oil.
Worn or broken gears/bearings
See your YANMAR dealer.
Tractor is pulled to one side
Brakes adjusted unevenly
Adjust brake pedal free travel.
Right and left tires inflated unevenly
Inflate tires to proper pressure.
Implement improperly adjusted
See implement operator's manual