Manuals / Exmark / Lawn and Garden / Lawn Mower

Exmark 920 Alternator Belt Tension, Belt Guide Adjustment, Brake Link Adjustment, Maintenance

Models: 0 920

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1. Front of unit

Maintenance

Figure 18

1. Front of unit

2. Alignment holes

		Figure 19
1.	Spring idler pulley	3. Right side idler pulley
2.	Front of unit	(adjustable)
2.	Front of unit

Alternator Belt Tension

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

Tilt seat and remove air deflector panel

To tighten alternator belt, loosen both upper and lower alternator mounting bolts. Rotate alternator out, away from engine and retighten hardware to secure in place.

When properly tensioned, the alternator belt will deflect 1/4 to 3/8 inch (7-9 mm) while applying 22 pounds of force to the belt midway between fan and alternator.

Belt Guide Adjustment

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

2.Remove the belt shield on the right side of mower deck.

3.Note belt guide bolted to deck near the shield support stud and right-hand pulley. Guide should be 1/8 inch (3.2 mm) away from the belt, with bolt-end of guide near end of slot (Figure 20).

4.If adjustment is necessary, loosen the bolt securing the belt guide and make proper adjustment. Tighten hardware.

Figure 20

1. End of slot	2. Belt guide

Brake Link Adjustment

Check to make sure brake is adjusted properly.

1.Disengage brake lever (lever down).

2.Measure the length of the spring. Measurement should be 2 13/16 inches (7.1 cm) between washers. (Figure 21).

3.If adjustment is necessary, adjust the nyloc nut at the bottom of the spring to achieve 2 13/16 inches (7.1 cm).

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Image 41

Exmark 0 Alternator Belt Tension, Belt Guide Adjustment, Brake Link Adjustment, Maintenance, Front of unit, adjustable

Contents

For Serial Nos 920,000 & Higher Lazer Z LZD Units LAZER Z D-SERIESAll Rights Reserved CALIFORNIA Proposition 65 WarningModel No Serial No IntroductionContents Safety Alert Symbol SafetySafety ALERT! YOUR SAFETY IS INVOLVEDOperation DANGERAvoid prolonged breathing of vapors Keep face away from nozzle and gas tank/container openingSlope Operation Do Not mow slopes when grass is wetKeep hands, feet, hair, jewelry, or clothing away from rotating parts Do Not mow near drop-offs or near waterMaintenance and Storage Using the Rollover Protection System ROPSLower the roll bar only when absolutely necessary Do Not wear seat belt when the roll bar is downVentilate when charging or using battery in an enclosed space Keep sparks, flames, or cigarettes away from batteryDo Not swallow electrolyte SafetySafety Use cardboard or paper, not your hands, to find hydraulic leaksSafety Safety and Instructional DecalsSafety Safety Safety 2. PTO-disengage Safety1. PTO-engage Fast SafetyNeutral SlowSpecifications SpecificationsSafety Interlock System Model NumbersHydrostatic Ground Drive System SeatTires & Wheels Cutting DeckCurb Weight DimensionsTorque Requirements Overall WidthOperation Product OverviewControls OperationTracking Adjustment Knob Ignition SwitchBrake Lever Hour MeterCoolant Temperature Gauge PTO Engagement SwitchGlow Plug Switch and Light Pre-StartOperating Instructions Important Lower the roll bar only when absolutely necessaryBiodiesel Ready Raise the Rollover Protection System ROPSDisengaging the PTO Engaging the PTOStopping the Engine Important Operator must be in seat before the PTO can be engagedUse caution when making turns Adjusting the Cutting HeightDriving the Machine Slow the machine down before making sharp turnsOperation Adjusting the Anti-Scalp RollersTransporting Use extreme caution when operating a unit on a rampTransporting a Unit Loading a UnitMaintenance MaintenanceRecommended Maintenance Schedules Check Battery Charge Periodic MaintenanceService Interval Before each use or daily Service Interval MonthlyService Interval As required Recommended Jump Starting ProcedureDo Not jump start a weak battery if these conditions exist Batteries contain acid and produce explosive gasesService Interval Before each use or daily Check Mower BladesMaintenance Check Rollover Protections Systems Roll Bar Pins Check Safety Interlock SystemService Air Cleaner SERVICE DEALERService Interval Every 40 hours Service Interval After the first 5 hoursChange Engine Oil Check Hydraulic Oil LevelCheck Condition Of Belts Note See chart for service intervalsLubricate Grease Fittings MaintenanceService Interval After the first 100 hours Every 500 hours thereafter Wheel Hub - Slotted Nut Torque SpecificationService Interval Every 160 hours Lubricate Caster Wheel HubsService Interval After the first 250 hours Service Interval Every 200 hoursEvery 250 hours/Yearly if using Mobil 1 15W50 Lubricate Motion Control Bronze BushingsChange Engine Coolant Check Engine Coolant LevelEngine coolant is toxic. Swallowing coolant can cause poisoning Do Not swallow Keep out of reach of children and petsDo Not refuel or run engine unless spark arrester is installed Service Interval Every 50 hoursCheck Spark Arrester if equipped Thread Locking AdhesivesMobil HTS Grease Or Food-Grade Anti-seize AdjustmentsCopper-Based Anti-seize Dielectric GreasePump Drive Belt Tension Mule Drive Belt Tension AdjustmentDeck Belt Tension MaintenanceBrake Link Adjustment Belt Guide AdjustmentAlternator Belt Tension MaintenanceBrake Adjustment Electric Clutch AdjustmentRemoving the Shim MaintenanceG011733 Reverse Indicator AdjustmentMaintenance Maintenance Motion Control Linkage AdjustmentCaster Pivot Bearings Pre-Load Adjustment Motion Control Damper Adjustmentbecause of the jumper wire being used. Run MaintenanceClean Engine Cooling System CleaningClean Engine and Exhaust System Area Clean all debris from inside of pump drive belt compartment dailyClean Grass Build-Up Under Deck Clean Debris From MachineClean the Radiator Clean all debris from engine and exhaust system areaMaintenance Battery DisposalDANGER Do Not swallow electrolyteTroubleshooting TroubleshootingProblem TroubleshootingPossible Cause Corrective ActionProblem Troubleshootingnecessary. Install drive belt and check belt Possible CauseElectrical Diagram SchematicsSchematics Schematics Electrical Schematic2 Year Limited Warranty Exmark Commercial Turf EquipmentInstructions for Obtaining Warranty Service Owner’s ResponsibilitiesPage Page Service Done By Service RecordDate Description of Work DonePage This page may be copied for personal use MID-MOUNT RIDING ACCESSORIES AND OPTIONS SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONSOUT-FRONT RIDING ACCESSORIES AND OPTIONS WALK-BEHIND ACCESSORIES AND OPTIONS