Safety Interlock System; Testing The Safety Interlock System; Initial Run-In Procedures - Scag Power Equipment PATRIOT SPZ-52H-22FX Operator's Manual

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13. Deck Lift Foot Lever (Figure 4-1). Use to raise
and lower the cutter deck.
14. Cutting Height Adjustment (Figure 4-1). Use to
set the cutter deck at the desired cutting height.
15. Deck Release Lever (Figure 4-1). Use 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.
16. Seat Belt (Figure 4-1). Use to secure the operator.
Seat belt must be worn at all times during operation.
17. Seat Hold Down Release Latch (Figure 4-1).
Located behind the seat. Use 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 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.
4.3 TESTING THE SAFETY INTERLOCK
SYSTEM
1. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, and engage the PTO switch
to the ON (up) position. Try to start the engine; the
engine should not start
2. Sit in the seat in the operating position, engage the
parking brake, move the PTO switch to the OFF
(down) position, move either of the steering control
handles out of the neutral lock position. Try to start
the engine; the engine should not start. Repeat for
the other steering control lever.
All SPZ models will start with the parking brake
engaged or disengaged. For all test procedures
listed below, the engine should be started with the
parking brake engaged unless specified otherwise.
3. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, move the PTO switch to the
OFF (down) position, and start the engine. With the
engine running, release the parking brake and rise
slightly off of the seat. The engine should shut off.
4. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, move the PTO switch to
the OFF (down) position, and start the engine. With
the engine running, engage the PTO switch to the
ON (up) position, and rise slightly off of the seat. The
engine should shut off.
5. Sit in the seat in the operating position, engage the
parking brake, place the steering control levers in
the neutral lock position, move the PTO switch to the
OFF (down) position, and start the engine. With the
engine running, move either steering control lever
out of the neutral lock position. The engine should
shut off. Repeat for the other steering control lever.

4.4 INITIAL RUN-IN PROCEDURES

FIRST DAY OF USE OR APPROXIMATELY 20 HOURS
1. Check all belts for proper alignment and wear at 2, 4
and 8 hours.
2. Change the engine oil and oil filter after the first 20
hours of operation. (See Section 7.3.)
3. Check hydraulic oil level in reservoir.
(See Section 7.2.)
4. Check for loose hardware. Tighten as needed.
5. Check interlock system for proper operation.
(See Section 4.2.)
6. Check tire pressure. Adjust pressure if necessary.
(See Section 7.9.)
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Section 4
-NOTE-