Exmark 4500-501 Rev A Caster Pivot Bearings Pre-Load Adjustment, Motion Control Damper Adjustment

Page 43

Maintenance

wheel must stop turning or slightly creep in reverse (Figure 22).

Caster Pivot Bearings Pre-Load Adjustment

Remove dust cap from caster and tighten nyloc nut until washers are flat and back off 1/4 of a turn to properly set the pre-load on the bearings. If disassembled, make sure the spring washers are reinstalled as shown in Figure 24.

Figure 22

Left-Hand Side of Unit

1.Turn LH tracking adjustment knob. (Do Not loosen any nuts on LH side)

10.Shut off unit. Remove jumper wire from wire harness connector and plug connector into seat switch.

Motion Control Damper

Adjustment

Figure 24

The top damper mounting bolt can be adjusted to obtain a more desired motion control lever resistance. See Figure 23 for mounting options.

1. Spring disc washers

Clutch Shim

Some later model year units have been built with clutches that contain a brake shim. When the clutch brake has worn to the point where the clutch no longer engages consistently, the shim can be removed to extend the clutch life.

Figure 23

1.Motion control bracket

2.Least resistance (softest feel)

3.Medium resistance (medium feel)

4.Most resistance (firmest feel)

5.Torque nyloc nut to 200 in-lb (16.7 ft-lb). Bolt must protrude past end of nyloc nut after torque.

6.Damper

7.Damper must move freely on bolt.

43

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Contents

Lazer Z XS California Introduction Contents Training SafetySafety Alert Symbol Safe Operating PracticesOperation Slope Operation Maintenance and Storage Using the Rollover Protection System RopsSafety Safety and Instructional Decals 103-0223 103-0261 103-1798 103-2076 103-7218 107-2102 Safety 109-2264 109-2478 109-2951 109-3148 Safety 107-9866 Model Numbers SpecificationsSystems Tires & Wheels Hydrostatic Ground Drive SystemCutting Deck Torque Requirements DimensionsOperation Product OverviewControls Hour Meter Tracking Adjustment KnobPTO Engagement Switch Coolant Temperature GaugePre-Start Starting the Engine Operating InstructionsRaise the Rollover Protection System Rops Open the Fuel Shut-Off ValveDriving the Machine Engaging the PTODisengaging the PTO Stopping the EngineDriving Forward Adjusting the Cutting HeightAdjusting the Anti-Scalp Rollers Transporting a Unit TransportingLoading a Unit Operation Recommended Maintenance Schedules MaintenanceCheck Engine Oil Level Check Battery ChargeCheck Mower Blades Check Safety Interlock SystemCheck for Loose Hardware Check Rollover Protections Systems Roll Bar PinsService Air Cleaner Check Seat BeltCheck Condition Of Belts Change Engine OilCheck Hydraulic Oil Level Check Tire PressuresLubricate Caster Wheel Hubs Lubricate Grease FittingsDrain Fuel Filter/Water Separator Lubricate Brake Handle PivotLubricate Brake Rod Bushings Lubricate Motion Control Bronze BushingsChange Hydraulic System Filter Wheel Hub Slotted Nut Torque SpecificationChange Fuel Filter/Water Separator Change Inline Fuel FilterChange Engine Coolant Check Engine Coolant LevelThread Locking Adhesives Fuel Tank Mounting Hardware SpecificationsMobil HTS Grease Or Food-Grade Anti-seize Dielectric Grease Copper-Based Anti-seizeDeck Leveling Pump Drive Belt Tension Mule Drive Belt Tension AdjustmentAlternator Belt Tension Belt Guide AdjustmentBrake Link Adjustment Deck Belt TensionElectric Clutch Adjustment Brake AdjustmentReverse Indicator Adjustment Motion Control Linkage Adjustment Motion Control Damper Adjustment Caster Pivot Bearings Pre-Load AdjustmentClutch Shim Removing the Shim Feeler gauge Remove Accumulated Debris from Engine Clean Engine Cooling SystemCleaning of the Radiator Clean Debris From MachineMotor Oil Disposal Clean Grass Build-Up Under DeckBattery Disposal Waste DisposalProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Troubleshooting Electrical Ignition SwitchElectrical Logic Schematic Hydraulic Diagram Exmark Commercial Turf Equipment Page Page Service Record Page Page See EXMARK’S Complete Line of Accessories and Options

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