Exmark 4500-355 manual Adjusting the Number of Spacers below Caster Support Hub

Page 29

Maintenance

CAUTION

Raising the mower for service or maintenance relying solely on mechanical or hydraulic jacks could be dangerous. The mechanical or hydraulic jacks may not be enough support or may malfunction allowing the unit to fall, which could cause injury.

Do Not rely solely on mechanical or hydraulic jacks for support. Use adequate jack stands or equivalent support.

4.Loosen but do not remove the top two bolts on each hydraulic motor mounting bracket (see Figure 9).

5.Remove the bottom sets of hardware for each bracket.

6.Reposition the mounting bracket to the desired height and reinstall the bottom hardware.

7.Tighten all hardware and remount drive wheels.

8.Remove jack.

9.Adjust wheel drive and brake linkages as required (see Brake and Wheel Drive Linkage Adjustment section).

Figure 9

1.

Position A

4.

Position D

2.

Position B

5.

Position E

3.

Position C

6.

Axle Pivot Bolt-loosen

 

 

 

but Do Not remove

Note: The axle positions are in 1/2 inch (1.3 cm) increments and the large caster spacers are 1/2 inch (1.3 cm) thick. Therefore, by adjusting the same number of 1/2 inch (1.3 cm) caster spacers as

axle hole positions the blades will retain the same front-to-back tip (rake).

Adjusting the Number of Spacers below Caster Support Hub

1.Stop the machine and move the drive levers to the neutral lock position.

2.Disengage the PTO.

3.Place the drive levers in the “park brake” position.

4.Push down on handles to lift front casters off the ground.

5.Support with jackstands.

6.Remove “quick pin” from one caster and remove caster from hub (see Figure 10).

Figure 10

1.

Four 1/2 inch (127 mm)

3.

3/16 inch (4.8 mm)

 

spacers

 

spacer

2.

Quick Pin

4.

Caster support

7.Adjust the number of 1/2 inch spacers between bottom of hub and caster yoke to obtain the desired cutting height from the Cutting Height Adjustment Table in the Adjusting the Cutting Height section.

8.Install remaining spacers on top of hub.

9.Install “quick pin”.

10.Repeat for other caster.

Adjusting the Cutting Height with Blade Spacers

1.Stop the machine and move the drive levers to the neutral locked position.

2.Disengage the PTO.

3.Engage the park brake.

29

Image 29
Contents Viking Hydro California Introduction Contents Safety Alert Symbol SafetySafe Operating Practices TrainingSafety Slope Operation OperationMaintenance and Storage Safety Safety and Instructional Decals 103-1798 103-2076 103-2103 103-2196 103-2242 116-0404 103-2243 103-4935 103-5626 Systems SpecificationsModel Numbers Torque Requirements DimensionsControls Product Overview OperationOperator Presence Control OPC LeversTracking Adjustment Knob Off-Run SwitchNeutral Lock Latch Park Brake LeverOperating Instructions Pre-StartDriving the Machine Disengaging the PTOStopping the Engine Transporting a Unit TransportingRecommended Maintenance Schedules MaintenanceReplacing the Discharge Deflector Check Engine Oil LevelCheck Mower Blades Check for Loose Hardware Check Safety Interlock SystemChange Engine Oil Service Pre-Cleaner Element and Air CleanerCheck Hydraulic Oil Level Check Tire PressuresCheck Spark Plugs Lubricate Grease FittingsChange Fuel Filter Change Hydraulic System FilterLevel Hydraulic System Air PurgeThread Locking Adhesives Wheel Hub-Slotted Nut Torque SpecificationMobil HTS Grease Or Food-Grade Anti-seize Copper-Based Anti-seizeAdjusting the Cutting Height AdjustmentsAdjusting the Axle Position Adjusting the Cutting Height with Blade Spacers Adjusting the Number of Spacers below Caster Support HubPTO Safety Switch Adjustment PTO Engagement Linkage AdjustmentInch Deck Shown for Reference Only Engine to Mower Deck Belt AdjustmentPump Drive Belt Tension Adjustment Blade Brake AdjustmentBelt Guide Adjustment Hydro Drive Linkage Adjustment Adjust Hydro Control Linkages Park Brake Adjustment Hydro Pump Spring Tension SettingRemove Engine Shrouds and Clean Cooling Fins Clean Engine Air Cooling SystemClean Grass Build-Up Under Deck Waste DisposalProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Wiring Diagram SchematicsSchematics Exmark Commercial Turf Equipment Page Page See EXMARK’S Complete Line of Accessories and Options