Exmark VT691KA484CA manual Wheel Hub Nut Torque Specification, Check Spark Arrester if equipped

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Maintenance

Figure 21

1. Charge pump cap

2. Loosen 1 1/2 turns only

1.Stop engine and wait for all moving parts to stop. Raise the rear of the machine up onto jack stands high enough to raise the drive wheels off the ground.

2.Check oil level as stated in Check Hydraulic Oil Level section.

3.Start engine and move throttle control ahead to full throttle position. Move RH motion control lever inward (together) and move both levers forward with equal pressure.

If either drive wheel does not rotate, it is possible to assist the purging of the charge pump by carefully rotating the tire in the forward position.

Note: It is necessary to lightly touch the charge pump cap with your hand to check the pump temperature. If the cap is too hot to touch, turn off engine. The pumps may be damaged if the pump becomes too hot.

If either drive wheel still does not rotate continue with step 4.

4.Thoroughly clean the area around each of the charge pump housings.

5.To “prime” charge pump, loosen two hex socket head capscrews (shown in Figure 21) 1 1/2 turns only. Make sure engine is not running. Lift the charge pump housing upward and wait for a steady flow of oil to flow out from under the housing. Retighten the capscrews. Do this for both pumps.

Note: Hydraulic reservoir can be pressurized up to 5 psi to speed this process.

6.If either drive wheel still does not rotate, stop and repeat steps 4 and 5 above for the respective

pump. If wheels rotate slowly, the system may prime after additional running. Check oil level as stated in Check the Hydraulic Oil Level section.

7.Allow unit to run several minutes after the charge pumps are “primed” with drive system in the full speed position. Check oil level as stated in Check the Hydraulic Oil Level section.

8.Check hydro drive linkage adjustment as stated in Hydro Drive Linkage Adjustment section in Adjustments.

Wheel Hub Nut Torque Specification

Service Interval: After the first 100 hours

Every 500 hours thereafter

Torque the nut on the wheel motor tapered shaft to 175-225 ft-lb (237-305 N-m).

Note: Do Not use anti-seize compound on the wheel hub.

Check Spark Arrester (if equipped)

Service Interval: Every 50 hours

WARNING

Hot exhaust system components may ignite gasoline vapors even after the engine is stopped. Hot particles exhausted during engine operation may ignite flammable materials. Fire may result in personal injury or property damage.

Do Not refuel or run engine unless spark arrester is installed.

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

2.Wait for muffler to cool.

3.If any breaks in the screen or welds are observed, replace arrester.

4.If plugging of the screen is observed, remove arrester and shake loose particles out of the arrester and clean screen with a wire brush (soak in solvent if necessary). Reinstall arrester on exhaust outlet.

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Contents Vantage California Introduction Contents Training SafetySafety Alert Symbol Safe Operating PracticesSafety Slope Operation OperationMaintenance and Storage Safety Safety and Instructional Decals 116-0404 116-2040 116-3076 116-7217 116-5040 116-4648 Systems SpecificationsModel Numbers Dimensions Tread Width Outside to Outside Curb WeightProduct Overview Torque RequirementsControls OperationFuel Shut-Off Valve Ignition SwitchPark Brake Lever Hour MeterOperating Instructions Pre-StartStopping the Engine PTO EngagementDisengaging the PTO Driving Forward Driving the MachineOperating the Platform Adjusting the Front Reference/Speed Control BarOperating the Machine with the Platform Down Operating the Machine with the Platform UpTransporting a Unit Adjusting the Cutting HeightTransporting Loading a Unit Recommended Maintenance Schedules MaintenanceCheck Engine Oil Level Check Battery ChargeRecommended Jump Starting Procedure Check Mower Blades Release the Cushion for Rear AccessBlade control switch PTO is pulled on Check Safety Interlock SystemCheck Hydraulic Oil Level Service Air CleanerCheck for Loose Hardware Change Engine OilLubricate Caster Wheel Hubs Check Tire PressuresCheck Condition Of Belts Lubricate Grease FittingsChange Hydraulic System Filter and Fluid Check Spark PlugsChange Fuel Filter Level Hydraulic System Air PurgeCheck Spark Arrester if equipped Wheel Hub Nut Torque SpecificationDielectric Grease Thread Locking AdhesivesMobil HTS Grease Or Food-Grade Anti-seize Copper-Based Anti-seizeAdjusting the Cutting Deck Rake Mower Deck Drive Belt Tension Adjusting the Rear of the DeckPark Brake Adjustment Pump Drive Belt TensionChecking the Tire Pressure in Drive System Removing the Shim Electric Clutch AdjustmentMotion Control Neutral Adjustment Check the Neutral Switch Alignment Motion Control Tracking AdjustmentAdjust RH Motion Control Handle Position Caster Pivot Bearings Pre-Load Adjustment Clean Grass Build-Up Under Deck Clean Engine and Exhaust System AreaRemove Engine Shrouds and Clean Cooling Fins Clean Debris From MachineBattery Disposal Problem Possible Cause Corrective Action TroubleshootingTroubleshooting Troubleshooting Electrical Diagram-All Units Except Kohler EFI SchematicsElectrical Diagram-Kohler EFI Electrical Schematic-All Units Except Kohler EFI Electrical Schematic-Kohler EFI Hydraulic Diagram General Warranty Conditions and Products Covered Page Date Description of Work Done Service Done By Service RecordPage This page may be copied for personal use Exmark Accessories and Options

VT691KA524CA, VT691KA484CA, VT651KA484, VT730EKC524, VT691KA524 specifications

The Exmark VT691KA524, VT730EKC524, VT651KA484, VT691KA484CA, and VT691KA524CA mowers represent some of the most advanced lawn care technology in the market. Each model is designed to deliver professional-grade performance, ensuring lawns are impeccably manicured.

The VT691KA524 features a robust 691cc engine, delivering powerful performance. Its 52-inch cutting deck allows for efficient mowing, making it ideal for medium to large-sized lawns. The mower incorporates Exmark's innovative patented UltraCut deck design, which offers exceptional cut quality and reduced clumping. Additionally, it boasts a high-capacity fuel tank, which is designed for extended operation without frequent refueling.

Another standout model, the VT730EKC524, comes with a 730cc engine, providing even more horsepower. This model supports advanced cooling and air filtration systems that enhance engine life and performance. The VT730EKC524’s fully adjustable cutting height options allow users to customize their mowing experience, ensuring a clean and even cut on various grass types.

The VT651KA484, equipped with a 651cc engine, emphasizes manoeuvrability and ease of use. It features a compact design that allows it to navigate tight spaces. The 48-inch cutting deck still provides a significant mowing width, and the model is also equipped with Exmark’s patented parking brake system for added safety.

The VT691KA484CA and VT691KA524CA are both equipped with the powerful 691cc engine like the VT691KA524. However, they come with unique functionalities that enhance their usability. The -CA variants offer additional features, such as an improved comfort seat and steering controls, making them ideal for extended mowing sessions without fatigue.

All these models feature Exmark’s signature Precision-Theory mower technology. This ensures that the mower maintains a consistent speed and cutting height while preventing scalping on uneven terrain. Furthermore, the mowers are constructed with durable, high-quality materials designed for longevity, ensuring that they can withstand the rigors of regular use.

With their user-friendly operation, advanced technologies, and rugged construction, the Exmark VT series mowers are an excellent investment for anyone looking to maintain an attractive and healthy lawn. Whether you choose the VT691KA524 for its efficiency or the VT730EKC524 for its superior horsepower, each model guarantees professional-quality results.
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