Simplicity ZT4000 Series - Manual (Page 14)

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Operator Safety
Safety Interlock System
This unit is equipped with safety interlock switches. These
safety systems are present for your safety, do not attempt
to bypass safety switches, and never tamper with safety
devices. Check their operation regularly.
Operational SAFETY Checks
Test 1 — Engine should NOT crank if:
• PTO switch is engaged, OR
• Parking brake is not engaged, OR
• Motion control handles are not in the NEUTRAL
position.
Test 2 — Engine SHOULD crank if:
• PTO switch is NOT engaged, AND
• Parking brake is engaged, AND
• Motion control handles are locked in the NEUTRAL
position.
Test 3 — Engine should SHUT OFF if:
• Operator rises off seat with PTO engaged, OR
• Operator rises off seat with parking brake disengaged.
• Operator moves motion control handles out of their
neutral positions before disengaging parking brake.
Test 4 — Blade Brake Check
Mower blades and mower drive belt should come to a
complete stop within five (5) seconds after electric PTO
switch is turned off (or operator rises off seat). If mower
drive belt does not stop within five (5) seconds, see your
dealer.
NOTE: Once the engine has stopped, PTO switch must be
turned off, parking brake must be engaged, and the motion
control handles must be locked in the NEUTRAL position
after the operator returns to the seat in order to start the
engine.
Safety Icons
The alert symbol ( ) is used to identity safety information
about hazards that can result in personal injury. A signal
word (DANGER, WARNING, or CAUTION) is used with the
alert symbol to indicate the likelihood and the potential
severity of the injury. In addition, a hazard icon may be
used to represent the type of hazard. An explanation of
hazard levels and icons are as follows:
North American Safety Icons
Alert Toxic Fumes
Read the
Manual
Open Flame
Hazard
Fire Hazard
Amputation -
Rotating Parts
Amputation -
Hand In Blade
Amputation -
Foot In Blade
Thrown
Objects
Hot Surface
Wear
Protective Gear
Pinch Point
Rollover
Hazard
Overhead
Obstacles
Tipover Dropoffs
Slippery
Slopes
Keep Children
Away
Kickback
Remove
Key Before
Servicing
WARNING
If the unit does not pass a safety test, do NOT operate
it. See your authorized dealer. Under no circumstance
should you attempt to defeat the purpose of the safety
interlock system.
DANGER
This indicates a hazard which, if not avoided, will result in
serious injury or death.
WARNING
This indicates a hazard which, if not avoided, could result
in serious injury or death.
CAUTION
This indicates a hazard which, if not avoided, might result
in serious injury or death.
NOTICE
This message presented without the alert symbol indicates
a situation where the unit or property could be damaged.