Husqvarna RZ4621 BF Operator's Manual page 47

Problem
Engine overheats
Battery not charging
The machine moves slowly, unevenly, or not at all
mower deck not engaging
Transaxle leaks oil
Uneven mowing results
TRoUBlESHooTING
Cause
• Clogged air intake or cooling fins
• Engine overloaded
• Poor ventilation around engine
• Defective engine speed regulator
• Too little or no oil in the engine
• Contamination in the carburetor or fuel line.
• fouled spark plugs
• Poor contact of the battery terminal cable connections
• Charging lead is disconnected
• Parking brake on
• Bypass valve on pump open
• Drive belt for the transmission slack or
has come off
• Air trapped in hydraulic system
• Drive belt for the mower deck has come loose
• Contact for the electromagnetic coupling has loosened
• Blade switch is faulty or has come loose from cable
contact
• Blown fuse
• Damaged seals, housing, or gaskets
• Air trapped in hydraulic system
• Different air pressure in tires on the left and right sides.
• Bent blades
• Suspending for the mower deck is uneven
• Blades are dull
• Driving speed too high
• Grass is too long
• Grass collected under the mower deck
47