Exmark 4500-645 manual Check Mower Blades

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Maintenance

Figure 20

1.Positive (+) cable on discharged battery

2.Positive (+) cable on booster battery

3.Negative (–) cable on the booster battery

4.Negative (–) cable on the engine block

5.Booster battery

6.Discharged battery

7.Engine block

4.Connect the other end of the positive cable to the positive terminal of the booster battery.

5.Connect the black negative (–) cable to the other terminal (negative) of the booster battery.

6.MAKE THE FINAL CONNECTION ON THE ENGINE BLOCK OF THE STALLED VEHICLE (NOT TO THE NEGATIVE POST) AWAY FROM THE BATTERY. STAND BACK.

7.Start the vehicle and remove the cables in the reverse order of connection (the engine block (black) connection is the first to disconnect).

Check Mower Blades

Service Interval: Before each use or daily

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Lift deck and secure in raised position as stated in the Clean Grass Build-Up Under Deck section.

3.Inspect blades and sharpen or replace as required.

4.Reinstall the blades (if they were removed) in the following order:

A.Install bushing through blade with bushing flange on bottom (grass) side of blade.

Figure 21

1.Install bushing in blade prior to installing bushing in spindle.

B.Install bushing/blade assembly into spindle. Make sure the splines on the bushing are engaged in the spindle before tightening the bolt.

Figure 22

1.Use wrench here for blade installation:

LZZ-LP: This nut has been torqued to 90-110 ft-lb (122-149 N-m).

LZAS-LP: This nut has been torqued to 140–145 ft-lb (190–197 N-m)

2.Torque to 55-60 ft-lb (75-81 N-m) Apply lubricant to threads as needed to prevent seizing. Copper-based anti-seize preferable. Grease acceptable substitute.

C.Apply lubricant to threads of blade bolt to prevent seizing. Copper-based anti-seize preferable. Grease acceptable substitute. Install blade bolt finger tight. Place wrench on the top spindle nut then torque the blade bolts to 55-60 ft-lb (75-81 N-m).

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Contents Lazer Z LPG Models All Rights Reserved Introduction Contents Safety Safety Alert SymbolSafe Operating Practices TrainingDo Not change the tanks when the engine is running Inspection Operation With each tank changeWeekly Tank RequalificationSlope Operation Using the Rollover Protection System Rops Maintenance and Storage Safety Safety and Instructional Decals 109-3148 109-7232 116-0157 116-0752 109-7069 109-9906 Specifications Model NumbersSystems Seat Hydrostatic Ground Drive SystemDimensions Curb Weight Accessory Weight Table WorksheetTread Width Center to Center of Tires, Widthwise Wheel Base Center of Caster Tire to Center of Drive TireProduct Overview Torque RequirementsOperation ControlsMotion Control Levers Brake LeverIgnition Switch Safety Pressure Relief ValveHour Meter Fuel ValvePTO Engagement Switch Low Voltage IndicatorLPG Cylinder Brackets Drive Wheel Release ValvesPre-Start Operating InstructionsRaise the Rollover Protection System Rops Open the Fuel Valve Starting the EngineEngaging the PTO Disengaging the PTODriving the Machine Driving ForwardAdjusting the Cutting Height Adjusting the Anti-Scalp RollersDriving in Reverse Transporting Transporting a UnitDo Not drive a unit on a public street or roadway Loading a Unit Operation Maintenance Recommended Maintenance SchedulesCheck Battery Charge Check Engine Oil LevelProposition 65 Warning Recommended Jump Starting Procedure Do Not jump start a weak battery if these conditions existCheck Mower Blades Check Safety Interlock System Check Rollover Protections Systems Roll Bar KnobsService Air Cleaner Check Seat BeltCheck for Loose Hardware Change Engine OilCheck Tire Pressures Check Condition Of BeltsLubricate Grease Fittings Lubricate Caster Wheel HubsLubricate Brake Handle Pivot Lubricate Deck Lift PivotCheck Spark Plugs Check LPG TankChange LPG Tank Change Hydraulic System Filter and FluidWheel Hub Slotted Nut Torque Specification Thread Locking AdhesivesCopper-Based Anti-seize Dielectric GreaseAdjustments Deck LevelingPump Drive Belt Tension Adjusting the Parking Brake Deck Belt TensionElectric Clutch Adjustment Removing the Shim Motion Control Linkage Adjustment Motion Control Damper Adjustment Motion Control Neutral Lock Pivot AdjustmentMotion Control Handle Adjustment Adjusting the heightCaster Pivot Bearings Pre-Load Adjustment Adjusting the TiltClean Engine and Exhaust System Area Remove Engine Shrouds and Clean Cooling FinsClean Hydro Fan Cooling Fins Clean Debris From MachineBattery Disposal Waste DisposalMotor Oil Disposal Troubleshooting Problem Possible Cause Corrective ActionSee Drive Wheel Release Valves section Troubleshooting Schematics DiagramSchematic ElectricalHydraulic Diagram General Warranty Conditions and Products Covered Page Service Record Date Description of Work Done Service Done ByPage This page may be copied for personal use See EXMARK’S Complete Line of Accessories and Options