Maintenance

and install that vent plug. Torque the plug to 180 in-lb (20.3 N-m).

7.Continue to add oil through the expansion reservoir until it reaches the FULL COLD line on the expansion reservoir.

8.Install the transaxle guard. Refer to Figure 36 for the correct torque values for the nuts and bolts.

9.Proceed to the Bleeding the Hydraulic System section.

Important: Failure to perform the Bleeding the Hydraulic System procedure after changing hydraulic filters and oil can result in irreparable damage to the transaxle drive system.

Bleeding the Hydraulic System

1.Enter the operator's position. Start engine and move throttle control ahead to 1/2 throttle position. Disengage parking brake.

A.Move the bypass levers into the pushing the machine position; refer to the Pushing the Machine by Hand section in Operation. With the bypass valves open and the engine running, slowly move the motion control levers in both forward and reverse (5 or 6 times).

B.Move the bypass levers into the operating the machine position. With the bypass valve closed and the engine running, slowly move the directional control in both forward and reverse directions (5 to 6 times).

C.Stop the engine and check the oil level in the expansion reservoir. Add the specified oil as until it reaches the FULL COLD line on the expansion reservoir.

2.Repeat step 1 until all the air is completely purged from the system.

When the transaxle operates at normal noise levels and moves smoothly forward and reverse at normal speeds, then the transaxle is considered purged.

3.Check the oil level in the expansion reservoir one last time. Add the specified oil as until it reaches the FULL COLD line on the expansion reservoir if necessary.

Mower Maintenance

Servicing the Cutting Blades

Service Interval: Before each use or daily

Maintain sharp blades throughout the cutting season because sharp blades cut cleanly without tearing or shredding the grass blades. Tearing and shredding turns grass brown at the edges, which slows growth and increases the chance of disease.

Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine Exmark replacement blade. For convenient sharpening and replacement, you may want to keep extra blades on hand.

WARNING

A worn or damaged blade can break, and a piece of the blade could be thrown into the operator's or bystander's area, resulting in serious personal injury or death.

•Inspect the blade periodically for wear or damage.

•Replace a worn or damaged blade.

Before Inspecting or Servicing the Blades

Park the machine on a level surface, disengage the blade control switch, and move the motion control levers outward to engage parking brake. Stop the engine, remove the key, and disconnect the spark plug wire(s) from the spark plug(s).

Inspecting the Blades

1.Inspect the cutting edges (Figure 39). If the edges are not sharp or have nicks, remove and sharpen the blades; refer to Sharpening the Blades.

2.Inspect the blades, especially the curved area. If you notice any damage, wear, or a slot forming in this area (item 3 in Figure 39), immediately install a new blade.

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Exmark 4501-191 Rev.A Mower Maintenance Servicing the Cutting Blades, Bleeding the Hydraulic System, Inspecting the Blades
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4501-191 Rev.A specifications

The Exmark 4501-191 Rev.A is a cutting-edge lawn mower designed to deliver exceptional performance and efficiency for both residential and commercial users. With its robust build and advanced technology, this model has quickly gained popularity among landscapers and homeowners alike.

One of the standout features of the Exmark 4501-191 Rev.A is its powerful engine. Equipped with a high-performance Kohler engine, this mower provides ample horsepower and torque, ensuring efficient cutting even in tough conditions. This allows users to tackle dense grass and uneven terrains with ease, making it ideal for various landscaping needs.

The mower's innovative cutting system is another highlight that sets it apart. Featuring a large, durable cutting deck, the Exmark 4501-191 Rev.A offers an impressive cutting width, enabling users to cover more ground in less time. The deck is designed for precision, providing a clean and even cut every time. Additionally, the adjustable cutting height feature allows for customized lawn care, accommodating different grass types and lengths.

One of the remarkable technologies integrated into the Exmark 4501-191 Rev.A is its efficient fuel system. The mower is engineered to maximize fuel efficiency, allowing users to extend their mowing sessions without the frequent need to refuel. This feature not only saves time but also reduces overall operating costs, making the mower a cost-effective choice for users with large properties.

Comfort and maneuverability are also key characteristics of the Exmark 4501-191 Rev.A. The ergonomic controls are designed for ease of use, providing a smooth and responsive experience. The mower features large rear wheels and front casters, allowing for agile navigation around obstacles and tight spaces. This is particularly beneficial for commercial users who often work in complex environments.

Maintenance is simplified with the Exmark 4501-191 Rev.A, allowing users to focus on lawn care rather than upkeep. The model is built with durable materials, ensuring longevity and reducing wear and tear. Clear access points for cleaning and maintenance further enhance user convenience, making it easy to keep the mower in top shape.

In summary, the Exmark 4501-191 Rev.A is a high-performance lawn mower that combines power, efficiency, and ease of use. With its advanced engine, innovative cutting system, and user-friendly design, it stands out as an excellent choice for anyone looking to achieve a beautifully manicured lawn. Whether for commercial or residential use, this mower is a reliable tool that promises exceptional results.
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