Exmark 4500-689 manual Troubleshooting, Cutting blades is/are bent or unbalanced

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

 

 

 

 

Troubleshooting

 

 

 

 

 

Problem

 

Possible Cause

 

Corrective Action

 

 

 

 

 

Mower pulls left or right (with levers fully

1.

Idler arm pulleys and drive sheaves are

1.

Remove mud and/or grass buildup.

forward).

 

dirty.

 

 

 

2.

Wheel drive belt pulley scrapers

2.

Correct adjustment.

 

 

adjustment is not correct

 

 

 

3.

Idler pivot arms cannot pivot freely

3.

Lubricate ilder pivots.

 

4.

Drive belts are worn.

4.

Replace drive belts as a set. (Do Not mix

 

 

 

 

a new belt with a worn drive belt.)

 

5.

Drive linkage adjustment is not correct.

5.

Correct adjustment.

 

6.

Tire pressure in drive tires not correct.

6.

Adjust tire pressure in the drive tires.

 

 

 

 

 

Machine does not drive.

1.

Transmission drive belt is worn, loose or

1.

Change the belt.

 

 

broken.

 

 

 

2.

Transmission drive belt is off a pulley.

2.

Change the belt.

 

 

 

 

 

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.

 

 

 

8.

Caster mounting brackets are loose.

8.

Tighten hardware.

 

 

 

 

 

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.

 

7.

Belt is damaged.

7.

Install new belt.

 

 

 

 

 

Blades do not rotate.

1.

Deck belt is worn, loose or broken.

1.

Install new deck belt.

 

2.

Deck belt is off pulley.

2.

Install deck pulley and check the idler

 

 

 

 

pulley, idler arm and spring for correct

 

 

 

 

position and function.

 

 

 

 

 

Blades do not stop when disengaged.

1.

Blade brake is not adjusted properly.

1.

Adjust blade brake.

 

2.

Belt guide is not properly set

2.

Adjust belt guide to proper position.

 

3.

PTO engagement is not properly set.

3.

Check the PTO engagement position.

 

 

 

 

 

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Contents For Serial Nos 920,000 & Higher METROAll Rights Reserved CALIFORNIA Proposition 65 WarningModel No Serial No IntroductionContents Safety Alert Symbol SafetySafety ALERT! YOUR SAFETY IS INVOLVEDAvoid prolonged breathing of vapors DANGERKeep face away from nozzle and gas tank/container opening Keep away from eyes and skin Never siphon by mouthSlope Operation OperationAllow engine parts, especially the muffler, to cool before touching Remove accumulated debris from muffler and engine areaDo Not mow slopes when grass is wet Maintenance and StorageMow across slopes, never up and down Do Not mow near drop-offs or near waterSafety and Instructional Decals 103-1798 1-403143 98-5954 103-1623103-2076 103-2244 103-224548 inch Deck Units Only 117-2718 103-5626103-1967 Pistol Grip Units OnlySpecifications SpecificationsSafety Interlock System Model NumbersCurb Weight DimensionsTorque Requirements Cutting DeckOperation Product OverviewControls OperationChoke Control “Off-Run” SwitchThrottle Control Drive LeversOperating Instructions Pre-StartOpen the Fuel Shut-Off Valve Starting the EngineDrive Lever/Neutral Lock/Park Brake Latch Operation Driving the MachineFor Pistol Grip Handles For ECS HandlesIf necessary, use assistance when loading Keep feet and legs out from under the unit when loading and unloadingTransporting Changing GearsRecommended Maintenance Schedules MaintenanceMaintenance Service Interval Before each use or daily Periodic MaintenanceService Interval As required Check Engine Oil LevelService Air Cleaner Check Safety Interlock SystemSERVICE DEALER Check for Loose HardwareService Interval Every 40 hours Service Interval After the first 5 hoursNote See chart for service intervals Change Engine OilService Interval Every 500 hours Service Interval Every 160 hoursCheck Spark Plugs Change Fuel FilterMobil HTS Grease Or Food-Grade Anti-seize Thread Locking AdhesivesCopper-Based Anti-seize Dielectric GreaseAdjusting the Cutting Height AdjustmentsAdjusting the Axle Position Adjusting the Cutting Height with Blade Spacers Adjusting the Number of Spacers below Caster Support HubWheel Drive Belt Pulley Scrapers AdjustmentEngine to Mower Deck Belt Transmission BeltCheck belt tension after the first hour of operation Blade Brake AdjustmentBrake and Wheel Drive Linkage Adjustment Belt Guide AdjustmentShown with Blades Disengaged 48 inch Belt Guide Location Viewed from underneath the deckLeft Side Shown Shifter Lever Adjustment PTO Safety Switch Adjustment Shifter Detent AdjustmentHandle Height Adjustment Wheel Drive Spring Tension AdjustmentClean Engine and Exhaust System Area CleaningRemove Engine Shrouds and Clean Cooling Fins Clean all debris from engine and exhaust system areaClean Grass Build-Up Under Deck Clean Debris From MachineWaste Disposal Motor Oil DisposalTroubleshooting TroubleshootingCutting blades is/are bent or unbalanced Schematics Schematics2 Year Limited Warranty Exmark Commercial Turf EquipmentInstructions for Obtaining Warranty Service Owner’s ResponsibilitiesPage Service Done By Service RecordDate Description of Work DonePage This page may be copied for personal use MID-MOUNT RIDING ACCESSORIES AND OPTIONS SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONSOUT-FRONT RIDING ACCESSORIES AND OPTIONS WALK-BEHIND ACCESSORIES AND OPTIONS