Scag Power Equipment STT-31EFI-SS Safety Interlock System, Dump Valve Control

Section 4 R

5.Hourmeter (Figure 4-1). Indicates the number of hours the engine has been operated. It only operates when the engine is running. Has preset maintenance reminders for engine and hydraulic system oil changes. Will start flashing scheduled maintenance 2 hours before preset time and continue flashing until 2 hours after. Automatically resets.

6.Fuse Holders (Figure 4-1). Two 20-amp fuses protect the mower’s electrical system. To replace fuses, pull fuse out of the socket and install a new fuse.

7.Left Steering Control (Figure 4-1). Used to control the mower's left wheel when traveling forward or reverse.

8.Right Steering Control (Figure 4-1). Used to control the mower's right wheel when traveling forward or reverse.

9.Parking Brake Control (Figure 4-1). Used to engage and disengage the parking brakes. Pull the lever back to engage the parking brakes. Push the lever forward to disengage the parking brakes.

10.Fuel Tank Gauge (Figure 4-1). Indicates the amount of fuel in the fuel tank.

11.Dump Valve Control Levers (Figure 4-2). Located on the hydraulic pumps, used to “free-wheel” the mower. Rotating the levers clockwise until they stop allows the unit to move under hydraulic power. The levers must be in this position and torqued to 10 lb-ft during operation of the mower. Rotating the levers counter-clockwise allows the mower to be moved by hand (free-wheeling).

DUMP VALVE

CONTROL

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13.Cutting Height Adjustment (Figure 4-1). Used to set the cutter deck at the desired cutting height.

14.Deck Release Lever (Figure 4-1). Used to lock the cutter deck in the transport position. Push the foot pedal forward and pull back on the release lever to release the cutter deck for normal mowing.

15.Temperature Gauge (Figure 4-1). Indicates the operating temperature of the engine. Used on mowers with the liquid-cooled engine only.

16.Check Engine Light (Figure 4-1). Indicates the operation of the Kohler Electric Fuel Injection (EFI). If a problem occurs with the engine, the light will flash a code. See your authorized Scag Dealer for diagnosis and repair.

17.Seat Belt (Figure 4-1).Used to secure the operator. Seat belt must be worn at all times when the ROPS is in the upright and locked position.

18.Seat Hold Down Release Latch (Figure 4-1). Located behind the seat. Used to secure the seat in the operator's position. Release the latch to gain access under the seat.

4.2 Safety Interlock System

The mower is equipped with a safety interlock system that prevents the engine from starting unless the deck drive is disengaged, the parking brake is engaged, the steering control levers are in the neutral position and the operator is in the seat. The interlock system shuts off the engine if the operator leaves the seat with the steering control levers not in the neutral position and/or the cutter blades engaged and the parking brake not engaged.

WARNING

Never operate the mower with the interlock system disconnected or malfunctioning. Do not disengage or bypass any switch; injury to yourself and others or property damage could result.

Figure 4-2. Dump Valve Control

12.Deck Lift Foot Lever (Figure 4-1). Used to raise and lower the cutter deck. Push full forward to lock in the transport position.

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