Exmark 4500-689 Shifter Detent Adjustment, PTO Safety Switch Adjustment, Handle Height Adjustment

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Shifter Detent Adjustment

Maintenance

Shifter Detent Adjustment

Transmission shifter detent can be adjusted by adjusting the setscrew on the back side of transmission located just behind the neutral start switch. Turn setscrew in (clockwise) to hold the transmission shifter more positively in each gear and to increase the force on the lever required to shift gears.

Turn setscrew out (counterclockwise) to decrease force on lever required to shift gears. Factory setting is to turn setscrew all the way in then back out 1 1/2 turns.

Important: Screwing setscrew in too far will prevent the transmission from shifting.

PTO Safety Switch

Adjustment

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

2.With the blades disengaged and the bellcrank touching the engine deck, adjust the blade safety switch (if needed) until the bellcrank depresses the plunger by 1/4 inch (.64 cm).

3.Be sure the bellcrank does not contact the switch body to prevent damage to the switch.

4.Retighten switch mounting hardware.

Handle Height Adjustment

The handle can be pivoted to allow positioning in one of the three holes allowing various adjustments for operator comfort (see Figure 26).

To adjust the handle height:

1.Remove the bottom mounting hardware on each side of the handle.

2.Pivot the handle to one of the three positions.

3.Re-install hardware and tighten.

Important: If the handle height position is changed, it will be necessary to readjust the drive and brake linkage (see Check Brake and Wheel Drive Linkage Adjustment section in Operation.)

Figure 26

1.

Upper Handle

3.

Adjustment Holes

2.

Upper Hole

4.

Fuel Tank Support

Note: Adjustment Holes are actually in the side of the fuel tank support.

Wheel Drive Spring Tension Adjustment

It may be necessary to increase wheel drive belt tension under certain operating conditions such as, wet grass, hilly terrain, or while pulling a sulky.

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

2.Disengage neutral lock/park brake latches and release drive levers to lower spring force.

3.Remove the 5/16-18 inch whizlock nut securing the adjustment bolt to the drive wheel shield. Locate bolt assembly in the desired position as follows:

•Position A-Normal Conditions

•Position B-More Severe

•Position C-Most Severe

Note: Lever force is lowest with bolt assembly in Position A and will increase in Positions B and C (see Figure 27).

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Contents For Serial Nos 920,000 & Higher METROAll Rights Reserved CALIFORNIA Proposition 65 WarningModel No Serial No IntroductionContents Safety Alert Symbol SafetySafety ALERT! YOUR SAFETY IS INVOLVEDAvoid prolonged breathing of vapors DANGERKeep face away from nozzle and gas tank/container opening Keep away from eyes and skin Never siphon by mouthSlope Operation OperationAllow engine parts, especially the muffler, to cool before touching Remove accumulated debris from muffler and engine areaDo Not mow slopes when grass is wet Maintenance and StorageMow across slopes, never up and down Do Not mow near drop-offs or near waterSafety and Instructional Decals 103-1798 1-403143 98-5954 103-1623103-2076 103-2244 103-224548 inch Deck Units Only 117-2718 103-5626103-1967 Pistol Grip Units OnlySpecifications SpecificationsSafety Interlock System Model NumbersCurb Weight DimensionsTorque Requirements Cutting DeckOperation Product OverviewControls OperationChoke Control “Off-Run” SwitchThrottle Control Drive LeversOperating Instructions Pre-StartOpen the Fuel Shut-Off Valve Starting the EngineDrive Lever/Neutral Lock/Park Brake Latch Operation Driving the MachineFor Pistol Grip Handles For ECS HandlesIf necessary, use assistance when loading Keep feet and legs out from under the unit when loading and unloadingTransporting Changing GearsMaintenance Recommended Maintenance SchedulesMaintenance Service Interval Before each use or daily Periodic MaintenanceService Interval As required Check Engine Oil LevelService Air Cleaner Check Safety Interlock SystemSERVICE DEALER Check for Loose HardwareService Interval Every 40 hours Service Interval After the first 5 hoursNote See chart for service intervals Change Engine OilService Interval Every 500 hours Service Interval Every 160 hoursCheck Spark Plugs Change Fuel FilterMobil HTS Grease Or Food-Grade Anti-seize Thread Locking AdhesivesCopper-Based Anti-seize Dielectric GreaseAdjusting the Cutting Height AdjustmentsAdjusting the Axle Position Adjusting the Cutting Height with Blade Spacers Adjusting the Number of Spacers below Caster Support HubWheel Drive Belt Pulley Scrapers AdjustmentEngine to Mower Deck Belt Transmission BeltCheck belt tension after the first hour of operation Blade Brake AdjustmentBrake and Wheel Drive Linkage Adjustment Belt Guide AdjustmentShown with Blades Disengaged 48 inch Belt Guide Location Viewed from underneath the deckLeft Side Shown Shifter Lever Adjustment PTO Safety Switch Adjustment Shifter Detent AdjustmentHandle Height Adjustment Wheel Drive Spring Tension AdjustmentClean Engine and Exhaust System Area CleaningRemove Engine Shrouds and Clean Cooling Fins Clean all debris from engine and exhaust system areaClean Grass Build-Up Under Deck Clean Debris From MachineWaste Disposal Motor Oil DisposalTroubleshooting TroubleshootingCutting blades is/are bent or unbalanced Schematics Schematics2 Year Limited Warranty Exmark Commercial Turf EquipmentInstructions for Obtaining Warranty Service Owner’s ResponsibilitiesPage 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
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