Maintenance

Change Hydraulic System Filter

Service Interval: After the first 250 hours

Every 500 hours/Yearly (whichever comes first) thereafter

(Every 250 hours/Yearly if using Mobil 1 15W50)

Note: Use only Exmark Part No. 109-4180 for Summer use above 32°F (0°C) or P/N 1-523541 for Winter use below 32°F (0°C) (Refer to Transmission section in Specifications for filter specifications).

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

2.Carefully clean area around filter. It is important that no dirt or contamination enter hydraulic system.

3.Unscrew filter to remove and allow oil to drain from reservoir.

Important: Before reinstalling new filter, fill it with Exmark Premium Hydro oil and apply a thin coat of oil on the surface of the rubber seal.

Turn filter clockwise until rubber seal contacts the filter adapter, then tighten the filter an additional 2/3 to 3/4 turn.

4.Fill reservoir as stated in Check Hydraulic Oil

Level.

Exmark Premium Hydro Oil is recommended. Refer to the chart for an acceptable alternative:

Hydro Oil

Change Interval

Exmark Premium Hydro

500 Hours

Oil (Preferred)

 

Mobil 1 15W50

250 Hours

5.Loosen filter 1/2 turn and allow a small amount of oil to leak from the oil filter (this allows air to be purged from the oil filter and supply hose from the hydraulic reservoir). Turn filter clockwise until rubber seal contacts the filter adapter. Then tighten the filter an additional 2/3 to 3/4 turn.

6.Raise the rear of machine up and support with jack stands (or equivalent support) just high enough to allow drive wheels to turn freely.

CAUTION

Raising the mower for service or maintenance relying solely on mechanical or hydraulic jacks could be dangerous. The mechanical or hydraulic jacks may not be enough support or may malfunction allowing the unit to fall, which could cause injury.

Do Not rely solely on mechanical or hydraulic jacks for support. Use adequate jack stands or equivalent support.

7.If either drive wheel does not rotate, one or both of the charge pumps (located on the top of the main pump as shown in Figure 14) may have lost their “prime”. Refer to Hydraulic System Air Purge section.

Note: Do Not change hydraulic system oil (except for what can be drained when changing filter), unless it is felt the oil has been contaminated or been extremely hot.

Changing oil unnecessarily could damage hydraulic system by introducing contaminates into the system.

Hydraulic System Air Purge

Service Interval: As required

Air must be purged from the hydraulic system when any hydraulic components, including oil filter, are removed or any of the hydraulic lines are disconnected.

The critical area for purging air from the hydraulic system is between the oil reservoir and each charge pump located on the top of each variable displacement pump (Figure 14). Air in other parts of the hydraulic system will be purged through normal operation once the charge pump is “primed”.

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Exmark 4500-528 manual Change Hydraulic System Filter, Hydraulic System Air Purge, Level
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4500-528 specifications

The Exmark 4500-528 is a formidable piece of equipment in the realm of professional landscaping and lawn maintenance. Renowned for its robust build and high-performance capabilities, this zero-turn mower is engineered for efficiency, agility, and maneuverability, making it an ideal choice for both commercial landscapers and passionate homeowners.

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The 4500-528 incorporates Exmark’s patented UltraCut deck design, which is specifically designed to optimize mowing efficiency. The deck's advanced cutting technology ensures a clean, even cut, promoting healthier grass growth while minimizing clumping and discharge issues. Furthermore, the mower is available in different cutting deck sizes, allowing users to choose based on their specific requirements and preferences.

Operator comfort is another hallmark of the Exmark 4500-528. The mower features a comfortable, adjustable seat, allowing users to maintain optimal posture during extended mowing sessions. With intuitive controls and a user-friendly interface, operators can easily manage the mower's numerous functions, including speed adjustments and deck height settings.

In terms of durability, the Exmark 4500-528 is built to last. Its heavy-duty frame and high-quality components ensure that it can withstand the rigors of professional use. The mower's tires are designed for traction and stability on various surfaces, enhancing its performance in different weather conditions.

Another impressive characteristic of the Exmark 4500-528 is its fuel efficiency. It is designed to maximize fuel economy while maintaining powerful performance, reducing operational costs for users. Additionally, the ease of maintenance associated with the mower ensures that it remains in top working condition with minimal effort.

Lastly, the Exmark 4500-528 is equipped with cutting-edge technologies, including improved steering control and enhanced safety features. These advancements not only make operations smoother but also enhance the safety of the operator and bystanders.

In summary, the Exmark 4500-528 is a premier zero-turn mower that combines power, precision, comfort, and durability, making it an essential asset for anyone serious about lawn care. Whether for commercial purposes or personal use, this mower delivers exceptional performance and extensive versatility.
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