49
TROUBLESHOOTING
Problem Cause
Machine vibrates • Blades are loose
• Blades are incorrectly balanced
• Engine is loose
• Blades are bent
Engine overheats • Clogged air intake or cooling fins
• Engine overloaded
• Poor ventilation around engine
• Defective engine speed regulator
• Too little or no oil in the engine
• Fouled spark plug
Battery not charging • Poor contact with battery terminal cable connectors
• Charging lead is disconnected
• Fault in engine charging system
Machine moves slowly, unevenly, or not at all • Parking brake on
• Bypass valve on pump open
• Drive belt for the transmission gears slack or has come off
• Air in hydraulic system
Mower deck not engaging • Drive belt for the mower deck has come loose
• Contact for the electromagnetic coupling has loosened
• The blade switch is faulty or has come loose, from the cable
contact
• The fuse has blown
Hydraulic drive leaks oil • Damaged seals, housing, or gaskets
• Air trapped in hydraulic system
Uneven mowing results • Unequal tire pressure on the left and right sides
• Blades are bent
• Suspension for the mower deck is uneven
• Blades are dull
• Driving speed too high
• The grass is too long
• Grass collected under the mower deck
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