Hydraulic System Air Purge, Level | Exmark 4500-759 Rev A guide

Exmark 4500-759 Rev A manual Hydraulic System Air Purge, Level

Maintenance

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 or spark plug wire(s). 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 21) 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 21). Air in other parts of the hydraulic system will be purged through normal operation once the charge pump is “primed”.

4500-759 Rev A specifications

The Exmark 4500-759 Rev A represents an innovative leap in turf management equipment, designed to enhance the efficiency and effectiveness of landscaping professionals. As a leading name in the lawn care industry, Exmark has equipped this model with state-of-the-art technologies and features that cater to both commercial and residential users.

One of the standout characteristics of the Exmark 4500-759 Rev A is its robust engine performance. Powered by a high-efficiency engine, it delivers consistent power and torque, allowing for seamless operation across diverse terrains. This engine is complemented by advanced cooling systems, ensuring optimal temperature management during extended use, which ultimately prolongs the equipment's lifespan.

The cutting system on the 4500-759 Rev A is another highlight, featuring Exmark’s patented cutting deck design. The advanced blade and deck configuration promotes superior grass dispersion and minimizes clumping, resulting in a polished finish that landscapers strive to achieve. The adjustable cutting height feature allows users to tailor the lawn height to their preference, making it versatile for various types of grass and seasonal conditions.

Operator comfort and ease of use are paramount in the design of the Exmark 4500-759 Rev A. The ergonomically designed seat and user-friendly controls provide a smooth driving experience. The intuitive dashboard offers easy access to critical information about the mower’s operation, ensuring that operators can focus on the task at hand without any distractions.

Additionally, this model incorporates innovative technology with its integrated GPS tracking system, which enhances efficiency by allowing users to monitor location and performance remotely. This feature not only aids in job tracking but also supports maintenance scheduling, optimizing service intervals and reducing downtime.

Furthermore, the Exmark 4500-759 Rev A is built with durability in mind. The heavy-duty frame and reinforced components withstand rigorous use, ensuring long-lasting performance in demanding environments. The model's versatility enables it to adapt for various landscaping tasks, from mowing to mulching, making it a valuable tool for professionals.

In conclusion, the Exmark 4500-759 Rev A is a powerful and versatile mower equipped with advanced technologies that simplify lawn care while maximizing results. Its combination of performance, comfort, and durability positions it as an essential choice for those in the landscaping industry, empowering users to achieve their desired outcomes with confidence.