Section 7

R

B. Changing Lubricant

The lubricant in the cutter deck gearbox should be changed after every 500 hours of operation or yearly, whichever occurs first.

1.Place a suitable container beneath the cutter deck gearbox and locate the gearbox drain plug.

2.Remove the drain plug, drain the lubricant into the container and properly discard it.

3.Re-install the drain plug and add SAE 80W90 lubricant through the check plug hole in the gearbox until it is level with the bottom of the check plug hole. Install the check plug and tighten securely.

7.12 Cooling System

(Liquid-Cooled Machines Only)

WARNING

To avoid burns, always allow the engine to cool before removing the radiator cap.

A. Checking Coolant Level

The coolant level should be checked before each day of operation.

1.Remove the radiator cap by turning it slowly counterclockwise to the first stop and allow any pressure to be released. Push down on the cap and turn counterclockwise to remove.

2.Visually check the coolant level. The coolant level should be up to the bottom of the filler neck as shown in Figure 7-10. Add a mixture of coolant and soft water as needed.

- NOTE -

Refer to the coolant manufacturer's instructions for the proper coolant mixture ratio.

Fill to Bottom of

Filler Neck

030467-13

Figure 7-10. Coolant Level

3.Replace the radiator cap. Push down on the cap and turn clockwise until it stops.

- NOTE -

The cooling system should be flushed and the coolant replaced every 500 hours of operation or annually. See your Scag dealer for proper coolant replacement.

B. Cleaning the Radiator Debris Screen

After each day of operation, remove and clean the radiator debris screen.

Caution

To avoid personal injury, always wear safety glasses when using compressed air.

1.Pull the debris screen up to remove.

2.Clean the debris screen with compressed air or a water hose.

- NOTE -

Check the radiator for excessive debris and clean with compressed air. Never spray a hot engine with water, use only compressed air to remove debris.

3. Re-install the debris screen to the radiator.

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Scag Power Equipment STT61V-27DFI-SS, STT61V-35BVAC-SS Cooling System, Changing Lubricant, Liquid-Cooled Machines Only
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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.
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