Husqvarna MZ5225ZT / 966690501, MZ6128ZT / 966613101 manual Troubleshooting guide

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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, 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.

 

 

Bent blades.

 

 

• 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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Contents Operator Manual All rights reserved Contents Page Introduction Manufacturing Number Good ServiceSymbols and decals Manual Performing any Safety Instructions SafetyGeneral Operation Never take passengers Slope Operation Personal Safety EquipmentChildren Safe Handling of Gasoline General Maintenance Risk of sparking Spark Arrestor TransportControl Locations ControlsMotion Control Levers Choke Control Hour MeterTracking Knob Model MZ5225ZT onlyIgnition Switch Blade SwitchParking Brake Fuses Seat Adjustment Lever Cutting Height AdjusterFuel Shut Off Valve Hydro Release Levers Fuel TankTraining OperationSteering Starting the Engine Before StartingMove the throttle to the middle position Open the fuel tank valve Jumper Cables Weak BatteryTo remove cables, reverse order Running Ensure that no one is near mower when engaging blade switchOperating on Hills Stopping the Engine Mowing Tips Manual Transport Maintenance Maintenance Replacing battery BatteryTire Pressures Safety SystemDeck Belt Deck Belt InstallationDeck Belt Removal Pump Belt Belt InstallationBelts Replacing Pump BeltCutting Blades Leveling deck Adjusting the Mower DeckAnti-scalp rollers Use protective glasses when cleaning and washing CleaningCaster Wheels HardwareLubrication Schedule LubricationGeneral Front Wheel Mount Wheel and Deck ZerksFront Wheel Bearings Deck SpindlesTransaxle Transmission Fluid Change Purging Procedures Problem Cause Troubleshooting guideTroubleshooting guide Storage ServiceWinter Storage Engine Pigtail PUR WHT GRY MZ5225ZT MZ6128 ZT Technical DataFrame Hex Head Cap Screws Torque SpecificationsStandard Hardware Metric Standard HardwareUSA requirements Conformity certificatesDelivery Service Service JournalAction Stamp, signDate, mtr reading Stamp, sign After 10 hoursDaily Service Hour Service Service Journal Service Journal At least once each year Page 115 390127R1 08/31/10