78
SF310,370
78
Troubles Presumable causes Remedies
• Lift does not rise. • Clogged hydraulic oil filter
• Clogged suction filter
• Defective hydraulic pump
• Defective control valve
• Defective hydraulic cylinder
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Lift does not lower. • Lift lock is engaged
• Defective control valve
• Seized lift shaft
• Release it.
• Consult your dealer.
• Consult your dealer.
4. STEERING SYSTEM
5. HST (Hydrostatic transmission)
• Steering wheel is very heavy
to turn.
• Low tire pressure
• Low transmission oil level
• Air trapped inside hydraulic piping
• Clogged hydraulic oil filter
• Clogged suction filter
• Defective hydraulic pump
• Defective power-steering unit
• Correct it as specified.
• Fill up to upper limit.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Steering wheel has a tendency
to turn in one direction.
• Uneven tire inflation
• Improper toe-in
• Excessively worn tie-rod ends
• Inflate both front and rear tires to
specified pressure.
• Consult your dealer.
• Consult your dealer.
•
Excessive steering wheel play
• Excessively worn tie-rod ends
•
Excessively worn steering wheel column shaft
• Defective power-steering unit
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Front mower does not start
travelling.
• Parking brake is applied.
• Too low engine speed
• Low transmission oil level
• Air trapped inside hydraulic piping
• Improperly adjusted HST pedals
• Clogged hydraulic oil filter
• Clogged suction filter
• Defective HST unit
• Release it.
• Accelerate engine.
• Fill to upper limit.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.
• Front mower creeps without
HST pedals being operated
• Stuck neutral arm
• Incorrect neutral point of HST
• Improperly positioned neutral arm
• Defective HST unit
• Lubricate.
• Consult your dealer.
• Consult your dealer.
• Consult your dealer.