Exmark 4500-352 manual Adjusting the Number of Spacers below Caster Support Hub, Maintenance

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Adjusting the Number of Spacers below Caster Support Hub

Maintenance

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 11.).

5.Blades may be adjusted for cutting height by using the four 1/4 inch (.64 cm) spacers found on the blade spindle bolts (factory setting is two above and two below). This allows a 1 inch (2.5 cm) range in 1/4 inch (.64 cm) increments of cutting height in any axle position. The same number of blade spacers must be used on all blades to achieve a level cut (two above and two below, one above and three below, etc.).

6.Raise front of deck and support with jack stands.

7.Hold blade bolt on bottom and loosen spindle nut on top.

8.Adjust number of spacers between bottom of spindle and blade as indicated in the Cutting Height Adjustment Table and notes in the Adjusting the Cutting Height section.

9.Install unused spacers between top of spindle and spindle nut.

10.Torque bolt to 75–80 ft-lb (102–109 N-m) (see Figure 12).

Figure 11

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.

4.Stop the engine, remove the key and wait for all moving parts to stop.

Figure 12

1. Spring disc washer	2. Blade bolt torque to
(cone towards bolt head)	75–80 ft-lb (102–109
	N-m)

Transmission Belt

Adjustment

1.Stop engine and wait for all moving parts to stop. Engage parking brake. Remove key or spark plug wire(s).

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Contents For Serial Nos 790,000 & Higher METROCALIFORNIA Proposition 65 Warning Model No Serial No IntroductionContents ALERT! YOUR SAFETY IS INVOLVED SafetySafety Alert Symbol SafetyKeep away from eyes and skin Never siphon by mouth DANGERAvoid prolonged breathing of vapors Keep face away from nozzle and gas tank/container openingRemove accumulated debris from muffler and engine area OperationSlope Operation Allow engine parts, especially the muffler, to cool before touchingDo Not mow near drop-offs or near water Maintenance and StorageDo Not mow slopes when grass is wet Mow across slopes, never up and downSafety and Instructional Decals ECS Units Only Pistol Grip Units Only 48 inch Units OnlyModel Numbers SpecificationsSpecifications Safety Interlock SystemCutting Deck DimensionsCurb Weight Torque RequirementsOperation Product OverviewOperation ControlsChoke Control “Off-Run” SwitchDrive Levers Neutral Lock/Park Brake LatchesStarting the Engine Pre-StartOperating Instructions Open the Fuel Shut-Off ValveFor ECS Handles Driving the MachineDrive Lever/Neutral Lock/Park Brake Latch Operation For Pistol Grip HandlesTransporting a Unit If necessary, use assistance when loadingTransporting Changing GearsMaintenance Recommended Maintenance SchedulesMaintenance Check Engine Oil Level Periodic MaintenanceService Interval Before each use or daily Service Interval As requiredService Interval After the first 5 hours Check Safety Interlock SystemService Pre-Cleaner Element and Air Cleaner SERVICE DEALERCheck Condition Of Belts Service Interval Every 40 hoursNote See chart for service intervals Check Tire PressuresYearly-Replace gearbox grease Service Interval Every 160 hoursCheck Spark Plugs Change Fuel FilterMobil HTS Grease Or Food-Grade Anti-seize AdjustmentsAdjusting the Cutting Height Thread Locking AdhesivesHeight CuttingAxle Number Of SpacersAdjusting the Axle Position 3. Place the drive levers in the “park brake” position Adjusting the Number of Spacers below Caster Support HubAdjusting the Cutting Height with Blade Spacers Transmission Belt AdjustmentWheel Drive Belt Pulley Scrapers Engine to Mower Deck Belt48 inch Deck Shown for Reference Only Belt Guide Adjustment Blade Brake AdjustmentBrake and Wheel Drive Linkage Adjustment Right Side of Unit Shown Shifter Lever AdjustmentShifter Detent Adjustment PTO Safety Switch AdjustmentHandle Height Adjustment More traction applied as Wheel Drive Spring Tension AdjustmentUpper Handle Upper HoleRemove Engine Shrouds and Clean Cooling Fins CleaningClean Engine and Exhaust System Area Clean Debris From MachineTroubleshooting TroubleshootingCutting blades is/are bent or unbalanced Schematics SchematicsOwner’s Responsibilities Exmark Commercial Turf Equipment2 Year Limited Warranty Instructions for Obtaining Warranty ServicePage WALK-BEHIND ACCESSORIES AND OPTIONS SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONSMID-MOUNT RIDING ACCESSORIES AND OPTIONS OUT-FRONT RIDING ACCESSORIES AND OPTIONS