Exmark Complete Maintenance Schedule for Lawn Mower Adjustments

Page 31

Maintenance

3.If the lawn mower does not self propel with bail engaged, tighten the belt by turning the drive cable nuts clockwise. To maximize belt life, Do Not overtighten the belt.

If the lawn mower creeps forward without the bail engaged, loosen the belt by turning the drive cable nuts counterclockwise.

4.Loosen the cable clamp screw until the cable conduit slides (see Figure 34).

Figure 33

1.Adjustment of drive cable nuts

4.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

5.Check the operation for desired drive control.

6.Repeat steps 2 through 5 as necessary for further adjustment.

Note: Adjustment to obtain desired ground speed at full bail travel may be made in order to accommodate slower speeds.

Adjusting the Blade

Brake Cable

(Blade Brake Clutch Units

Only)

Adjust whenever a new blade brake cable assembly is installed or if the blade control lock lever does not operate properly.

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

2.Disconnect the wire from the spark plug.

3.Remove the belt cover by pulling upward on the back of the cover to unsnap the front and back cover tabs (see Figure 32). Remove any debris under the cover.

Figure 34

1. Spring

3. Cable clamp screw

2.Cable conduit

5.Pull the cable until there is approximately 1/8 inch in slack. Do Not put tension on the spring.

6.Tighten the screw to lock the adjustment in place.

7.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

8.Connect the wire to the spark plug.

9.Check the operation of the blade control lock lever (see Figure 13). The lever must reset itself to lock out the blade control bail. If it does not, repeat steps 4 through 8.

10.Perform the “Checking the Blade Brake Clutch (Blade Brake Clutch Units Only)” procedure in Operation.

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Contents Commercial California Introduction Contents Training SafetySafety Alert Symbol Safe Operating PracticesSafety Operation Slope Operation Maintenance and StorageSafety and Instructional Decals 109-9317 116-1922 116-2685 117-2718 116-1900 116-2737 Systems SpecificationsDimensions Model NumbersBlade Control Bail Product OverviewOperation ControlsBlade Control Lock Lever Blade Brake Clutch Units Only Engine Stop SwitchThrottle-Choke Lever ECXHN21 Choke Control ECXHNBBC21Pre-Start Handle AdjustmentOperating Instructions Starting the Engine Open the Fuel Shut-Off ValveStopping the Engine Using the Mulch PlugAuthorized Service Dealer Adjusting the Cutting Height Test Using the Grass BagUsing the Grass Bag Operating Tips Recommended Maintenance Schedules MaintenanceChecking the Blade Brake Clutch Blade Brake Clutch Only Check Engine Oil LevelCheck the Mower Blade Emptying the Fuel Tank and Cleaning the Fuel Filter sectionCheck for Loose Hardware Service Air Filter ECSHN21 Units Service Air Filter Kawasaki UnitsDamaged or excessively dirty Service Air Filter ECXHNBBC21 and ECXHN21 UnitsChange Engine Oil Check Spark Plugs Emptying the Fuel Tank and Cleaning the Fuel FilterChange Oil Filter ECXKA21 and ECXKABBC21 Check Condition Of Belt Self-Propelled Units OnlyAdjusting the Self-Propel Drive Self-Propelled Units Only AdjustmentsAdjustment of drive cable nuts Cleaning the Discharge Tunnel and Plug Clean Grass Build-Up Under DeckCleaning Under the Belt Cover Self-Propelled Units Only Screws BBC Shield Motor Oil Disposal Waste DisposalGeneral Storage Information StoragePreparing the Fuel System Preparing the EngineProblem Possible Cause Corrective Action TroubleshootingTroubleshooting 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.