Husqvarna BZ 27 Operator's Manual page 65

The engine overheats.
Battery not charging.
The machine moves slowly, unevenly,
or not at all.
Mower deck not engaging.
TROUBLE SHOOTING GUIDE
• Clogged air intake or cooling fins.
• Engine overloaded.
• Poor ventilation around engine.
• Defective engine speed regulator.
• Soot in the combustion chamber.
• Too little or no oil in the engine.
• Pre-ignition incorrect.
• Water pump not working.
• Coolant system clogged.
• Coolant level low.
• Poor contact with battery terminal
cable connectors.
• Parking brake on.
• Bypass valve on pump open.
• Drive belt for the pump slack or
has come off.
• Defective hydraulic system.
• Air in the 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.
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