Husqvarna MZ5425S Operator's Manual page 49

TROUBLESHOOTING
Problem
Machine vibrates
Engine overheats
Battery not charging
Machine moves slowly, unevenly, or not at all
Mower deck not engaging
Hydraulic drive leaks oil
Uneven mowing results
Cause
• Blades are loose
• Blades are incorrectly balanced
• Engine is loose
• Blades are bent
• 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
• Poor contact with battery terminal cable connectors
• Charging lead is disconnected
• Fault in engine charging system
• Parking brake on
• Bypass valve on pump open
• Drive belt for the transmission gears slack or has come off
• Air in hydraulic system
• 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
• Damaged seals, housing, or gaskets
• Air trapped in hydraulic system
• 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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