Maintenance

damaged or excessively dirty.)

Note: Do Not operate the engine without the air cleaner assembly; extreme engine damage will occur.

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

2.Disconnect the wire from the spark plug (Figure 10).

3.Press down on the latch tabs on top of the air cleaner cover.

Figure 28

1.

Cover

4.

Paper filter

2.

Foam element

5.

Air cleaner housing

3.Screen grid

4.Open the cover

5.Remove screen grid and paper filter assembly.

6.If the air filter is damaged or is wet with oil or fuel, replace it.

7.If the air filter is dirty, tap it on a hard surface several times or blow compressed air less than 30 psi (207 kPa) through the side of the filter that faces the engine. If the paper element is excessively dirty, replace it.

Note: Do Not brush the dirt off the filter; brushing forces dirt into the fibers.

8.Remove the foam element and wash it with a mild detergent and water, then blot it dry.

9.Saturate the element with clean engine oil, then squeeze it (Do Not twist) to remove the excess oil.

10.Install the foam element.

11.Remove dirt from the air cleaner housing and cover using a moist rag. Do Not wipe dirt into the air duct.

12.Install the filter.

13.Close the cover.

Service Air Filter (ECXHNBBC21 and ECXHN21 Units)

Service Interval: Every 25 hours—Clean the cover, base, foam and paper elements (ECXHNBBC21 and ECXHN21 Units).

Every 250 hours— Replace the air filter elements (ECXHNBBC21 and ECXHN21 Units). (May need more often if they are damaged or excessively dirty.)

Note: Do Not operate the engine without the air cleaner assembly; extreme engine damage will occur.

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

2.Disconnect the wire from the spark plug (Figure 10).

3.Remove the two wing nuts that secure the cover (Figure 29).

27

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Image 27
Exmark 4500-686 Rev. B manual Service Air Filter ECXHNBBC21 and ECXHN21 Units, Damaged or excessively dirty
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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.
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