Exmark 4500-689 Thread Locking Adhesives, Mobil HTS Grease Or Food-Grade Anti-seize, Maintenance

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Thread Locking Adhesives

Maintenance

6.Check for side play caused by bearing wear on the input and output shafts of the transmission. Replace bearings if necessary.

7.Remove the six bolts that fasten the upper case to the lower case and carefully remove the upper case half

8.Check the grease level in the lower case. The grease level should be approximately 1 1/2 inch to 1 3/4 inch (3.8 to 4.4 cm) from the gearbox bottom. If necessary, fill to proper level with Peerless grease (Part No. 788067).

9.Reinstall upper case half and fasten in place with six bolts previously removed.

10.Reinstall all parts removed in steps 3 and 4. Install drive belt and adjust tension as stated in the Transmission Belt Adjustment section.

Thread Locking Adhesives

Thread locking adhesives such as “Loctite 242” or “Fel-Pro, Pro-Lock Nut Type” are used on the following fasteners:

•All belt drive pulley setscrews.

•OPC lever setscrews.

•Pulley retaining bolt in end of engine crankshaft.

•Fuel tank bulkhead fitting threads

Adhesives such as “Loctite RC/609 or RC/680” or “Fel-Pro Pro-Lock Retaining I or Retaining II” are used on the following:

•OPC lever hubs and cross-shaft

Note: Care must be used not to bond the bearing, next to each OPC hub, to the cross-shaft which could cause binding of the OPC levers and erratic operation.

•Fuel tank studs, where studs are inserted into tank.

Mobil HTS Grease (Or Food-Grade Anti-seize)

Mobil HTS grease (or food-grade anti-seize) is used in the following locations:

•Between the cutter housing spindle and bearings.

•Between the cutter housing spindle and sheave.

Copper-Based Anti-seize

Copper-based anti-seize is used in the following locations:

•Between the blade drive and transmission drive pulleys and engine crankshaft.

•Between the transmission drive pulley and transmission drive shaft.

•Between the bearings and sheaves and transmission output shafts.

Dielectric Grease

Dielectric grease is used on all blade type electrical connections to prevent corrosion and loss of contact.

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Contents METRO For Serial Nos 920,000 & HigherCALIFORNIA Proposition 65 Warning All Rights ReservedIntroduction Model No Serial NoContents Safety Safety Alert SymbolSafety ALERT! YOUR SAFETY IS INVOLVEDDANGER Avoid prolonged breathing of vaporsKeep face away from nozzle and gas tank/container opening Keep away from eyes and skin Never siphon by mouthOperation Slope OperationAllow engine parts, especially the muffler, to cool before touching Remove accumulated debris from muffler and engine areaMaintenance and Storage Do Not mow slopes when grass is wetMow across slopes, never up and down Do Not mow near drop-offs or near waterSafety and Instructional Decals 1-403143 98-5954 103-1623 103-1798103-2076 103-2244 103-2245117-2718 103-5626 48 inch Deck Units Only103-1967 Pistol Grip Units OnlySpecifications SpecificationsSafety Interlock System Model NumbersDimensions Curb WeightTorque Requirements Cutting DeckProduct Overview OperationControls Operation“Off-Run” Switch Choke ControlThrottle Control Drive LeversPre-Start Operating InstructionsOpen the Fuel Shut-Off Valve Starting the EngineDriving the Machine Drive Lever/Neutral Lock/Park Brake Latch OperationFor Pistol Grip Handles For ECS HandlesKeep feet and legs out from under the unit when loading and unloading If necessary, use assistance when loadingTransporting Changing GearsMaintenance Recommended Maintenance SchedulesMaintenance Periodic Maintenance Service Interval Before each use or dailyService Interval As required Check Engine Oil LevelCheck Safety Interlock System Service Air CleanerSERVICE DEALER Check for Loose HardwareService Interval After the first 5 hours Service Interval Every 40 hoursNote See chart for service intervals Change Engine OilService Interval Every 160 hours Service Interval Every 500 hoursCheck Spark Plugs Change Fuel FilterThread Locking Adhesives Mobil HTS Grease Or Food-Grade Anti-seizeCopper-Based 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 SpacersAdjustment Wheel Drive Belt Pulley ScrapersEngine to Mower Deck Belt Transmission BeltBlade Brake Adjustment Check belt tension after the first hour of operationBelt Guide Adjustment Brake and Wheel Drive Linkage AdjustmentShown with Blades Disengaged 48 inch Belt Guide Location Viewed from underneath the deckLeft Side Shown Shifter Lever Adjustment Shifter Detent Adjustment PTO Safety Switch AdjustmentHandle Height Adjustment Wheel Drive Spring Tension AdjustmentCleaning Clean Engine and Exhaust System AreaRemove Engine Shrouds and Clean Cooling Fins Clean all debris from engine and exhaust system areaClean Debris From Machine Clean Grass Build-Up Under DeckWaste Disposal Motor Oil DisposalTroubleshooting TroubleshootingCutting blades is/are bent or unbalanced Schematics SchematicsExmark Commercial Turf Equipment 2 Year Limited WarrantyInstructions for Obtaining Warranty Service Owner’s ResponsibilitiesPage Service Record Service Done ByDate Description of Work DonePage This page may be copied for personal use SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONS MID-MOUNT RIDING ACCESSORIES AND OPTIONSOUT-FRONT RIDING ACCESSORIES AND OPTIONS WALK-BEHIND ACCESSORIES AND OPTIONS