Exmark 4500-686 Rev. B Adjustments, Adjusting the Self-Propel Drive Self-Propelled Units Only

Page 30

Maintenance

The fuel filter (screen) element is located inside the fuel tank (if applicable).

Note: The ECSHN21 does not have a removable fuel tank.

1.Stop the engine and wait for it to cool down.

Note: Drain gasoline for a cold engine only.

2.Disconnect the wire from the spark plug (Figure 11).

3.Close the fuel valve.

4.Disconnect the fuel line by loosening the tube clamp at the carburetor.

5.Open the fuel valve by turning the lever to the open position.

6.Drain the gasoline completely from the tank and fuel line into an approved fuel container.

7.Remove the fuel tank from the mower.

8.Close the fuel valve.

9.Pour a small amount of fuel in the fuel tank, move the fuel around in the tank, and pour it out into an approved fuel container.

10.Install the fuel tank and fuel line.

Adjustments

Note: Wait for all moving parts to stop and remove spark plug wire before servicing, cleaning, or making any adjustments to the unit.

Adjusting the Self-Propel

Drive

(Self-Propelled Units Only)

If the lawn mower does not self-propel or has a tendency to creep forward when the control bail is released, adjust the drive cable nuts as shown in Figure 33.

DANGER

Checking the operation of the mower with the belt cover removed will allow debris to be thrown in the operator’s or bystander’s direction and can result in serious personal injury or death.

Do Not operate the unit when cover is not in place.

1.Stop the engine and wait for all moving parts to stop.

2.Remove the belt cover by pulling upward on the back of the cover to unsnap the front and back cover tabs. Remove any debris under the cover.

Figure 32

1.Belt cover tabs

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Contents Commercial California Introduction Contents Safe Operating Practices SafetySafety Alert Symbol TrainingSafety Operation Maintenance and Storage Slope OperationSafety and Instructional Decals 109-9317 116-1922 116-2685 117-2718 116-1900 116-2737 Model Numbers SpecificationsDimensions SystemsControls Product OverviewOperation Blade Control BailChoke Control ECXHNBBC21 Engine Stop SwitchThrottle-Choke Lever ECXHN21 Blade Control Lock Lever Blade Brake Clutch Units OnlyHandle Adjustment Pre-StartOperating Instructions Open the Fuel Shut-Off Valve Starting the EngineUsing the Mulch Plug Stopping the EngineAuthorized Service Dealer Test Using the Grass Bag Adjusting the Cutting HeightUsing the Grass Bag Operating Tips Maintenance Recommended Maintenance SchedulesCheck Engine Oil Level Checking the Blade Brake Clutch Blade Brake Clutch OnlyEmptying the Fuel Tank and Cleaning the Fuel Filter section Check the Mower BladeCheck for Loose Hardware Service Air Filter Kawasaki Units Service Air Filter ECSHN21 UnitsService Air Filter ECXHNBBC21 and ECXHN21 Units Damaged or excessively dirtyChange Engine Oil Check Condition Of Belt Self-Propelled Units Only Emptying the Fuel Tank and Cleaning the Fuel FilterChange Oil Filter ECXKA21 and ECXKABBC21 Check Spark PlugsAdjustments Adjusting the Self-Propel Drive Self-Propelled Units OnlyAdjustment of drive cable nuts Clean Grass Build-Up Under Deck Cleaning the Discharge Tunnel and PlugCleaning Under the Belt Cover Self-Propelled Units Only Screws BBC Shield Waste Disposal Motor Oil DisposalPreparing the Engine StoragePreparing the Fuel System General Storage InformationTroubleshooting Problem Possible Cause Corrective ActionTroubleshooting Exmark Commercial Turf Equipment Page See EXMARK’S Complete Line of Accessories and Options

4500-686 Rev. B specifications

The Exmark 4500-686 Rev. B is a cutting-edge commercial mower that embodies the perfect blend of performance, durability, and user-friendly features. Designed for professional landscapers and grounds maintenance professionals, this mower is built to handle the rigorous demands of large properties and commercial applications.

One of the standout features of the Exmark 4500-686 Rev. B is its powerful engine. Equipped with a robust EFI (Electronic Fuel Injection) engine, it delivers exceptional power and fuel efficiency. The engine's advanced technology allows for quicker starts and better throttle response, ensuring that users can tackle their mowing tasks without any delays. This efficiency translates into reduced operating costs and less time spent refueling.

Another notable technology integrated into this mower is the UltraCut deck system. The 4500-686 Rev. B features a precision-engineered cutting deck that provides a superior cutting performance, offering an even and professional finish to any lawn. The design promotes optimal airflow beneath the deck, resulting in better grass lift and dispersion, which reduces clumping and enhances the quality of the cut. Additionally, the cutting height is easily adjustable, allowing operators to customize their mowing according to specific turf conditions.

User comfort is a paramount consideration in the design of the Exmark 4500-686 Rev. B. The mower is equipped with an ergonomic seat and controls that minimize operator fatigue during extended use. The full-suspension seat absorbs shocks and vibrations, while the easy-to-use controls allow for intuitive operation, ensuring that mowing is a seamless and productive experience.

Durability is another key characteristic of the 4500-686 Rev. B. Built with high-quality materials and components, this mower is designed to withstand the wear and tear of everyday use. The frame is reinforced to provide added strength, while the corrosion-resistant coating ensures that it maintains its appearance and functionality over time.

In conclusion, the Exmark 4500-686 Rev. B is an exceptional choice for anyone looking for a reliable and efficient commercial mower. With its powerful EFI engine, advanced cutting technologies, emphasis on operator comfort, and rugged build quality, this mower offers unmatched performance in the field. Whether for professional landscaping or maintaining large properties, the Exmark 4500-686 Rev. B is engineered to meet the demands of any mowing job.