LUBRICATION

*Hydraulic Pump

Fluid Change

This transaxle is designed with an external filter for ease of maintenance. To ensure constant fluid quality levels and longer life an oil filter change interval of every 200 hours is recommended.

The following procedure can be performed with the pump installed in the vehicle, and the vehicle on level ground. Apply the bypass valve and lock the vehicle parking brake.

1.Place an oil drain pan with a two gallon capacity beneath the oil filter. Remove the oil filter from the pump.

2.After the oil has drained, wipe the filter base surface off and apply a film of new oil to the gasket of the new replacement filter.

3.Install the new filter by hand, turn ¾ to one full turn after the filter gasket contacts the filter base surface.

4.Drain old oil filters of all free-flowing oil prior to disposal. Place used oil in appropriate containers and dispose of it in accordance with laws in your area.

5.Remove the cap from the pump’s expansion tank located on the vehicle frame.

6.Fill reservoir with SAE 10W30 oil to just above the MIN-ADD line on the reservoir. After purging, check levels and add oil if necessary.

7.Reinstall the expansion tank cap by hand. Do not overtighten.

8.Proceed to the purge procedure.

Purging Procedures

Due to the effects air has on efficiency in hydrostatic drive applications, it is critical that it is purged from the system.

These purge procedures should be implemented any time a hydrostatic system has been opened to facilitate maintenance or any additional oil has been added to the system.

The resulting symptoms in hydrostatic systems may be:

1.Noisy operation.

2.Lack of power or drive after short term operation.

3.High operation temperature and excessive expansion of oil.

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8061-016

1.Pump filter

2.Pump reservoir

3.Fluid fill lines

Changing the hydraulic pump oil filter

Before starting, make sure the pump is at the proper oil level. If not, fill to the specifications outlined prior.

The following procedures are best performed with the vehicle drive wheels off the ground, then repeated under normal operating conditions.

1.Disengage the brake if activated.

2.With the bypass valve open and the engine running at fast idle, slowly move the directional control in both forward and reverse directions (5 or 6 times). As air is purged from the unit, the oil level will drop.

3.With the bypass valve closed and the engine running, slowly move the directional control in both forward and reverse directions (5 to 6 times). Check the oil level and add oil as required after stopping the engine.

4.It may be necessary to repeat Steps 2 and 3 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, the transaxle is considered purged.

5.After the vehicle has been used two times, the oil level should be checked while the oil is cold and adjusted accordingly.

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Yazoo/Kees ZELKH61250, ZELKH72270, ZELKH52250 manual Hydraulic Pump, Fluid Change, Purging Procedures
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ZELKH52250, ZELKH72270, ZELKH61250 specifications

The Yazoo/Kees ZELKH61250, ZELKH72270, and ZELKH52250 models are part of a renowned line of commercial-grade zero-turn lawn mowers designed for efficiency, performance, and user comfort. Each model comes equipped with a unique combination of features and technologies that cater to landscaping professionals and serious homeowners.

The ZELKH61250 is powered by a robust engine that delivers impressive horsepower, ensuring that it can tackle even the toughest mowing tasks. Its 61-inch cutting deck enables efficient mowing of large areas, reducing the number of passes required. Additionally, this model features a durable construction with a reinforced frame that enhances stability and longevity, making it ideal for commercial applications.

Moving on to the ZELKH72270, this model stands out with its larger cutting deck and increased horsepower, providing superior performance for expansive lawns and commercial properties. It incorporates advanced hydrostatic transmission technology, which allows for seamless and responsive speed control. The ZELKH72270 also features an ergonomic seat design, providing maximum comfort during long hours of operation. Its easy-to-navigate control panel ensures that operators can quickly adjust settings while maintaining focus on the mowing task.

The ZELKH52250, though slightly smaller, does not compromise on power or efficiency. This model is equipped with a reliable engine and a 52-inch cutting deck, making it versatile for both residential and light commercial use. A standout feature of the ZELKH52250 is its compact size, which enhances maneuverability in tighter spaces without sacrificing performance. Additionally, it includes a convenient deck height adjustment system that allows operators to quickly change cutting heights to accommodate varying grass types and lengths.

All three models share common characteristics of heavy-duty wheels designed for optimal traction and stability on various terrains. They also feature simple maintenance access points, allowing users to perform necessary upkeep efficiently. The innovative design of the Yazoo/Kees ZELKH series emphasizes a user-centric approach, combining power, ease of use, and comfort.

In conclusion, Yazoo/Kees offers a range of zero-turn mowers that cater to both professional landscaping needs and residential lawn care. With advanced technologies, robust build quality, and smart features, the ZELKH61250, ZELKH72270, and ZELKH52250 remain top contenders in their class, ensuring that mowing is effective and enjoyable.
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