Exmark 4500-471, 000 & higher, S/N 790 Troubleshooting, Problem, Possible Cause, Corrective Action

Page 46
see Drive Wheel Release Valves section

Troubleshooting

Problem

 

Possible Cause

 

Corrective Action

 

 

 

 

 

Engine loses power

1.

Engine load is excessive

1.

Reduce the ground speed.

 

2.

Air cleaner is dirty.

2.

Clean or replace the air cleaner element.

 

3.

Oil level in the crankcase is low.

3.

Add oil to the crankcase.

 

4.

Cooling fins and air passages for the

4.

Remove the obstructions from the cooling

 

 

engine are plugged.

 

fins and air passages.

 

5.

Dirt in fuel filter.

5.

Replace the fuel filter.

 

6.

Dirt, water, or stale fuel is in the fuel

6.

Contact an Authorized Service Dealer.

 

 

system.

 

 

 

 

 

 

 

Mower pulls left or right (with levers fully

1.

Tire pressure in drive tires not correct.

1.

Adjust tire pressure in the drive tires.

forward)

 

 

 

 

 

 

 

 

 

Machine does not drive

1.

Drive release handle not in “operating”

1.

Position handle in “operating” position;

 

 

position.

 

see Drive Wheel Release Valves section

 

 

 

 

in Operation.

 

2.

Drive or pump belt is worn, loose or

2.

Change the belt.

 

 

broken.

 

 

 

3.

Drive or pump belt is off a pulley.

3.

Change the belt.

 

4.

Broken or missing idler spring.

4.

Replace the spring.

 

5.

Hydraulic fluid level is low or too hot.

5.

Add hydraulic fluid to reservoir or let it

 

 

 

 

cool down.

 

 

 

 

 

Uneven cutting height.

1.

Blade(s) not sharp.

1.

Sharpen the blade(s).

 

2.

Cutting blade(s) is/are bent.

2.

Install new cutting blade(s).

 

3.

Mower deck is not level.

3.

Level mower deck from side-to-side and

 

 

 

 

front-to-rear.

 

4.

Underside of mower is dirty.

4.

Clean the underside of the mower.

 

5.

Tire pressure in drive tires not correct.

5.

Adjust tire pressure in the drive tires.

 

6.

Blade spindle bent.

6.

Contact an Authorized Service Dealer.

 

7.

Tips of adjacent blades are at an uneven

7.

Replace blades, spindles and (or) check

 

 

cutting height. Blades tips should be even

 

for damage to mower deck.

 

 

within 3/16 inch which is approximately

 

 

 

 

one blade thickness.

 

 

 

 

 

 

 

Abnormal vibration

1.

Cutting blade(s) is/are bent or unbalanced.

1.

Install new cutting blade(s).

 

2.

Blade mounting bolt is loose.

2.

Tighten the blade mounting bolt.

 

3.

Engine mounting bolts are loose.

3.

Tighten the engine mounting bolts.

 

4.

Loose engine pulley, idler pulley, or blade

4.

Tighten the appropriate pulley.

 

 

pulley.

 

 

 

5.

Engine pulley is damaged.

5.

Contact an Authorized Service Dealer.

 

6.

Blade spindle is bent.

6.

Contact an Authorized Service Dealer.

 

 

 

 

 

Blades do not rotate.

1.

Drive belt is worn, loose or broken.

1.

Check the belt tension.

 

2.

Deck belt is worn, loose or broken.

2.

Install new deck belt.

 

3.

Deck belt is off pulley.

3.

Install belt on clutch and deck pulleys,

 

 

 

 

idlers, and tensioning idler per routing

 

 

 

 

decal on deck.

 

4.

Broken or missing idler spring.

4.

Replace the spring.

 

5.

Drive belt not routed correctly.

5.

Refer to belt routing decal on deck.

 

 

 

 

 

46

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Contents For Serial Nos 790,000 & Higher LAZER Z MODELSPart No. 4500-471Rev. A CALIFORNIA Proposition 65 Warning Introduction Model No Serial NoContents Safety SafetySafety Alert Symbol Safe Operating PracticesSafety DANGERDANGER Operation SafetySafety Using the Rollover Protection System ROPSSlope Operation Do Not mow slopes when grass is wetMaintenance and Storage SafetySafety and Instructional Decals Safety109-7232 Safety109-3148 107-2102 109-7330 107-2112109-9361 Safety109-8483 Deck Drive Belt Routing116-0211 SafetyPTO Switch Symbols Message DisplaySafety Interlock System SpecificationsSpecifications Model NumbersTires & Wheels SeatHydrostatic Ground Drive System SpecificationsOverall Width DimensionsCutting Deck Overall LengthTread Width Center to Center of Tires, Widthwise Curb WeightAccessory Weight Table Worksheet SpecificationsTorque Requirements Product OverviewProduct Overview Operation OperationControls Motion Control LeversHour Meter Ignition SwitchOperation Fuel Shut-OffValve PTO Engagement SwitchLow Voltage Indicator Fuel GaugeDeck Lift Pedal Operating InstructionsPre-Start Transport LockEngaging the PTO Open the Fuel Shut-OffValveStarting the Engine Disengaging the PTOUse caution when making turns Stopping the EngineDriving the Machine OperationOperation Adjusting the Cutting HeightAdjusting the Anti-ScalpRollers Driving in ReverseTransporting a Unit TransportingOperation Loading a Unit OperationRecommended Maintenance Schedules MaintenanceMaintenance Service Interval Before each use or daily Periodic MaintenanceCheck Battery Charge Service Interval As requiredMaintenance Check Safety Interlock SystemCheck Mower Blades Service Interval Before each use or dailyCheck Seat Belt Service Air CleanerCheck Rollover Protections Systems Roll Bar Knobs Check for Loose HardwareChange Engine Oil Service Interval After the first 5 hoursService Interval Every 50 hours Check Hydraulic Oil LevelLubricate Caster Wheel Hubs Check Condition Of BeltsLubricate Grease Fittings MaintenanceService Interval Every 500 hours Service Interval Every 200 hoursService Interval Every 100 hours Lubricate Brake Handle PivotCheck Spark Arrester if equipped Wheel Hub - Slotted Nut Torque SpecificationService Interval After the first 100 hours Every 500 hours thereafterCopper-Based Anti-seize AdjustmentsThread Locking Adhesives Dielectric GreaseMaintenance 8.Raise the discharge deflectorDeck Removal MaintenanceDeck Belt Tension Adjusting the Parking BrakePump Drive Belt Tension MaintenanceMotion Control Damper Adjustment Electric Clutch AdjustmentMotion Control Linkage Adjustment MaintenanceMotion Control Full Forward Tracking Adjustment Motion Control Handle AdjustmentMotion Control Neutral Lock Pivot Adjustment MaintenanceMaintenance Caster Pivot Bearings Pre-LoadAdjustmentRH Motion Control Shown Remove Engine Shrouds and Clean Cooling Fins CleaningClean Engine and Exhaust System Area Clean Hydro Fan Cooling GuardsMotor Oil Disposal Battery DisposalWaste Disposal MaintenanceTroubleshooting TroubleshootingPossible Cause TroubleshootingProblem Corrective ActionElectrical Diagram SchematicsSchematics PINKSchematics SchematicElectrical LogicHydraulic Diagram Schematics5 Year or 750 Hours Limited Consumer Warranty Exmark Lazer Z and Lazer Z AS Turf Equipment3 Year Limited Commercial Warranty General Warranty Conditions and Products CoveredPage Page Date Service RecordService Done By Description of Work DonePage Page OUT-FRONTRIDING ACCESSORIES AND OPTIONS MID-MOUNTRIDING ACCESSORIES AND OPTIONSWALK-BEHINDACCESSORIES AND OPTIONS
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000 & higher specifications

Exmark has long been synonymous with excellence in the world of lawn care and landscaping, and their 000 & higher, 0,312 series is no exception. Engineered for both professional landscapers and passionate homeowners, this series brings together innovative technology with robust design to deliver unparalleled performance and durability.

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