Manuals / Scag Power Equipment / Lawn and Garden / Lawn Mower

Scag Power Equipment STT61V-27DFI-SS Checking Hydraulic Oil Level, Changing Hydraulic Oil

Models: STT61V-35BVAC-SS STT-35BVAC-SS STT61V-27DFI-SS

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Section 7

R

7.3 Hydraulic System

A. Checking Hydraulic Oil Level

The hydraulic oil level should be checked after the first 10 hours of operation. Thereafter, check the oil after every 200 hours of machine operation or monthly, whichever occurs first.

- IMPORTANT -

If the oil level is consistently low, check for leaks and correct immediately.

1.Wipe dirt and contaminants from around the reservoir cap. Remove the cap from the hydraulic oil reservoir.

2.Visually check the level of hydraulic oil. Hydraulic oil must be at least 3" inches from top of the filler neck. If the level cannot be determined visually, use a clean tape measure to check the level. If the fluid is low, add 20W50 motor oil. DO NOT overfill; (overfilling the oil reservoir may cause oil seepage around the cap area).

3.Clean the fill cap and install it onto the reservoir.

Hydraulic Oil

Reservoir

STT99HOR-1

- IMPORTANT -

The hydraulic oil should be changed if you notice the presence of water or a rancid odor to the hydraulic oil.

1.Park the mower on a level surface and stop the engine.

2.Place a suitable container under the hydraulic oil filter. Remove the fill cap from the reservoir and the drain plug from the bottom of the drain tee fitting on the filter base. See Figure 7-3. Allow the fluid to drain into the container and properly discard it.

HYDRAULIC

OIL FILTER

390S0155-1

Figure 7-3. Hydraulic Oil Filter

3.Re-install the drain plug into the tee fitting and be sure it is tight.

- NOTE -

Before refilling the hydraulic oil reservoir the hydraulic oil filter should be changed as outlined in Procedure C "Changing Hydraulic Oil Filter Element" on page 35.

4.Fill the reservoir to 3-1/4" inches from the top of the filler neck with 20W50 motor oil.

Figure 7-2. Hydraulic Oil Reservoir

B. Changing Hydraulic Oil

The hydraulic oil should be changed after every 500 hours or annually, whichever occurs first. The oil should also be changed if the color of the fluid has become black or milky. A black color and/or a rancid odor usually indicates possible overheating of the oil, and a milky color usually indicates water in the hydraulic oil.

5.Replace the reservoir fill cap. Start the engine and drive forward and backward for two minutes. Check the oil level in the reservoir. If necessary, add oil to the reservoir.

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Scag Power Equipment STT61V-27DFI-SS, STT61V-35BVAC-SS, STT-35BVAC-SS Checking Hydraulic Oil Level, Changing Hydraulic Oil
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STT61V-35BVAC-SS, STT-35BVAC-SS, STT61V-27DFI-SS specifications

Scag Power Equipment is well-known in the lawn care industry for its high-performance mowers and commercial-grade equipment, and the STT series represents the pinnacle of their innovation and engineering prowess. Among the most notable models are the STT61V-27DFI-SS, STT-35BVAC-SS, and STT61V-35BVAC-SS. Each of these mowers combines cutting-edge technology with user-friendly features, making them ideal choices for both commercial landscapers and avid homeowners.

The STT61V-27DFI-SS mower is powered by a dependable 27-horsepower Kohler EFI engine, offering exceptional fuel efficiency and reduced emissions. This model is equipped with a 61-inch cutting deck, providing an impressive cutting width that allows for quicker mowing. The mower’s unique design includes a heavy-duty steel frame and reinforced deck for durability, ensuring it can withstand the rigors of professional use. With large pneumatic tires, it offers superior traction and stability on various terrains, making it an excellent choice for uneven lawns.

Next, the STT-35BVAC-SS mowers are notably equipped with a specialized vacuum collection system. This model is designed to tackle leaves and debris, featuring a powerful 35-horsepower engine and a versatile collection system that efficiently gathers clippings. The unique bagging system reduces the need for subsequent clean-up, allowing users to complete their tasks more efficiently. Additionally, the STT-35BVAC-SS boasts a responsive hydrostatic transmission, providing seamless speed adjustments for varied mowing conditions.

Lastly, the STT61V-35BVAC-SS combines the superior engine performance of a 35-horsepower powerplant with the impressive 61-inch cutting deck. This model is particularly favored for its dual functionalities of quality mowing and debris management. Its advanced hydraulic lift system allows for quick adjustments, ensuring the optimal cutting height for each job. Users will appreciate the ease of use, with features such as ergonomic controls and plush seating designed for extended comfort during long mowing sessions.

All three models feature Scag's renowned attention to detail, including premium blade design for a clean cut and easy height adjustments. They are also backed by Scag's commitment to customer support and robust warranty options. These mowers exemplify Scag Power Equipment's dedication to quality, performance, and innovation, making them indispensable tools for any lawn care professional or weekend warrior. Whether tackling a residential yard or a commercial landscape, the STT series delivers unmatched reliability and efficiency.