TROUBLESHOOTING GUIDE

Problem

 

Cause

 

 

 

Machine vibrates

Blades are loose

 

• Blades are incorrectly balanced

 

Engine is loose

 

 

 

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,

Parking brake on

unevenly, or not at all

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

 

• Blade switch is faulty or has come loose from the cable contact

 

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

 

Bent blades

 

• Suspension for the mower deck is uneven

 

Blades are dull

 

• Driving speed too high

• Grass is too long

• Grass collected under the mower deck

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Husqvarna MZ61 warranty Troubleshooting Guide