Exmark 4500-689 Belt Guide Adjustment, Brake and Wheel Drive Linkage Adjustment, Maintenance

Page 30

Shown with Blades Disengaged

Maintenance

distance should be between 1/8 inch and 3/16 inch (3–5 mm) (see Figure 16).

5.Engage the blade control and check to make sure the blade brake pad clears the sheave.

Figure 16

Shown with Blades Disengaged

1. Blade Brake Rod	3. 1/8 inch to 3/16 inch (3–5
	mm)

2.Spring Mounting Bolts

Belt Guide Adjustment

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

2.Engage the blade drive belt.

3.Check belt guide under the engine deck for proper adjustment (See Figure 17 and Figure 18). Adjust as necessary.

The disengaged belt should not drag or fall off pulley when guides are properly adjusted.

Figure 17

32 inch and 36 inch Belt Guide Location (Viewed from underneath the deck)

1.1 1/4 inch (3.1 cm)

Figure 18

48 inch Belt Guide Location (Viewed from underneath the deck)

1.1 3/8 inch (3.5 cm)

Brake and Wheel Drive Linkage Adjustment

1.Check for correct brake adjustment:

Place the drive levers in the “park brake” position. The mower should not move forward or backward. If it does, tighten the wingnuts.

Place the drive levers in the “neutral lock” position. The mower should move forward and backward freely. If it does not, brake adjustment is necessary

2.Adjust brakes by adjusting wingnut on the upper end of each brake rod. Tighten the wingnut until the brakes engage when the drive levers are squeezed enough to allow the neutral lock/park brake latches to be placed into the “park brake” position.

See Figure 6 for Standard Pistol Grip handles and Figure 7 for ECS handles.

Note: The neutral lock/park brake latches must be able to be moved into the park brake position, if not, the brake linkages must be adjusted again.

3.Check for correct wheel drive linkage adjustment.

•For Pistol Grip Handles

Allow drive levers to drop into the full forward position: The clevis pin should rest in the neutral lock latch with approximately 3/16 inch to 1/4 inch (4.7–6.4 mm) clearance from the bottom of the slot (see Figure 19). Adjust if necessary.

To adjust the wheel drive linkage:

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Contents METRO For Serial Nos 920,000 & HigherCALIFORNIA Proposition 65 Warning All Rights ReservedIntroduction Model No Serial NoContents Safety SafetySafety Alert Symbol ALERT! YOUR SAFETY IS INVOLVEDKeep face away from nozzle and gas tank/container opening DANGERAvoid prolonged breathing of vapors Keep away from eyes and skin Never siphon by mouthAllow engine parts, especially the muffler, to cool before touching OperationSlope Operation Remove accumulated debris from muffler and engine areaMow across slopes, never up and down Maintenance and StorageDo Not mow slopes when grass is wet Do Not mow near drop-offs or near waterSafety and Instructional Decals 103-2076 103-2244 1-403143 98-5954 103-1623103-1798 103-2245103-1967 117-2718 103-562648 inch Deck Units Only Pistol Grip Units OnlySafety Interlock System SpecificationsSpecifications Model NumbersTorque Requirements DimensionsCurb Weight Cutting DeckControls Product OverviewOperation OperationThrottle Control “Off-Run” SwitchChoke Control Drive LeversOpen the Fuel Shut-Off Valve Pre-StartOperating Instructions Starting the EngineFor Pistol Grip Handles Driving the MachineDrive Lever/Neutral Lock/Park Brake Latch Operation For ECS HandlesTransporting Keep feet and legs out from under the unit when loading and unloadingIf necessary, use assistance when loading Changing GearsMaintenance Recommended Maintenance SchedulesMaintenance Service Interval As required Periodic MaintenanceService Interval Before each use or daily Check Engine Oil LevelSERVICE DEALER Check Safety Interlock SystemService Air Cleaner Check for Loose HardwareNote See chart for service intervals Service Interval After the first 5 hoursService Interval Every 40 hours Change Engine OilCheck Spark Plugs Service Interval Every 160 hoursService Interval Every 500 hours Change Fuel FilterCopper-Based Anti-seize Thread Locking AdhesivesMobil HTS Grease Or Food-Grade Anti-seize Dielectric GreaseAdjustments Adjusting the Cutting HeightAdjusting the Axle Position Adjusting the Number of Spacers below Caster Support Hub Adjusting the Cutting Height with Blade SpacersEngine to Mower Deck Belt AdjustmentWheel Drive Belt Pulley Scrapers Transmission BeltBlade Brake Adjustment Check belt tension after the first hour of operationShown with Blades Disengaged Belt Guide AdjustmentBrake and Wheel Drive Linkage Adjustment 48 inch Belt Guide Location Viewed from underneath the deckLeft Side Shown Shifter Lever Adjustment Handle Height Adjustment Shifter Detent AdjustmentPTO Safety Switch Adjustment Wheel Drive Spring Tension AdjustmentRemove Engine Shrouds and Clean Cooling Fins CleaningClean Engine and Exhaust System Area Clean all debris from engine and exhaust system areaWaste Disposal Clean Debris From MachineClean Grass Build-Up Under Deck Motor Oil DisposalTroubleshooting TroubleshootingCutting blades is/are bent or unbalanced Schematics SchematicsInstructions for Obtaining Warranty Service Exmark Commercial Turf Equipment2 Year Limited Warranty Owner’s ResponsibilitiesPage Date Service RecordService Done By Description of Work DonePage This page may be copied for personal use OUT-FRONT RIDING ACCESSORIES AND OPTIONS SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONSMID-MOUNT RIDING ACCESSORIES AND OPTIONS WALK-BEHIND ACCESSORIES AND OPTIONS