67 OPE_EF312T&352T_en.doc
3. Hydraulic system
PROBLEM CAUSE REMEDY
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.
Implement not raises
Oil leaks Check oil leaks.
Hydraulic stop valve closed Open stop valve.
Hitch drops slowly or does
not drop
Slow return valve set slow Open valve and adjust drop speed.
Slow return valve set fast Close valve and adjust drop speed.
System drops too fast
Improper oil Use oil with proper viscosity.
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.
System overheating
Control lever not returned to neutral
position when using implement
Return lever to neutral position.
4. Power train
PROBLEM CAUSE REMEDY
Transmission oil level low Add proper type of oil.
Abnormal noise
Worn or broken gears/bearings See your YANMAR dealer.
Brakes adjusted unevenly Adjust brake pedal free travel.
Right and left tires inflated unevenly Inflate tires to proper pressure.
Tractor is pulled to one side
Implement improperly adjusted See implement operator's manual
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