Safety Interlock System - Scag Power Equipment STC Operator's Manual

5. Hourmeter (Figure 4-1). Indicates the number of
hours the engine has been operated. It operates
whenever the ignition key switch is in the ON
position. 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 Switching Valve (Figure 4-1). Located on
the left side of the machine. Used to shut off fuel
supply to the engine and change fuel supply between
the fuel tanks. Rotate the valve counter clockwise to
supply fuel from the tank on the left side only.
Rotate the valve clockwise to supply fuel from the
tank on the right side only.
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 10ft/lbs for proper operation of the
mower drive system. Rotating the levers counter-
clockwise, 1-2 turns, allows the mower to be moved
by hand (free-wheeling).
12. Deck Lift Foot Lever (Figure 4-1). Used to raise
and lower the cutter deck.
DUMP VALVE
CONTROL LEVERS
Figure 4-2 Dump Valve Control
13. Cutting Height Adjustment (Figure 4-1). Used to
set the cutter deck at the desired cutting height.
14. Cutter 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. Seat Belt (Figure 4-1). Used to secure the
operator. Seat belt must be worn only when the roll
bar is in the upright and locked position.
16. Seat Hold Down Release Latch (Figure 4-1).
Located behind the seat. Used to secure the seat in
the operators 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/or 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.
14
Section 4
STC 2001 DVC