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Break-In Time
New engines take time to develop full power. Mower decks and drive systems have higher
friction when new, placing additional load on the engine. Allow 40 to 50 hours of break-in
time for new machines to develop full power and best performance.
Safety-Interlock System
The safety-interlock system is designed to prevent the engine from starting unless:
• The blade-control switch (PTO) is disengaged.
• The motion-control levers are in the P
ARK position.
The safety-interlock system also is designed to shut off the engine whenever the control
levers are out of the P
ARK position and you rise from the seat.
WARNING
If the safety-interlock switches are disconnected or damaged, the machine could
operate unexpectedly, causing personal injury.
• Do not tamper with the interlock switches.
• Check the operation of the interlock switches daily and replace any damaged
switches before operating the machine.
Testing the Safety-Interlock System
Test the safety-interlock system before you use the machine each time. If the safety system
does not operate as described below, have an Authorized Service Dealer repair the safety
system immediately.
1. Sit on the seat, move the motion-control levers to the P
ARK position, and move the blade-
control switch to the O
N position. Try starting the engine; the engine should not crank.
G451953
2. Sit on the seat and move the blade-control switch to the OFF position. Move either
motion-control lever to the center, unlocked position. Try starting the engine; the engine
should not crank. Repeat with the other motion-control lever.
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Operation: Before Operation Page 4–4 3464-625 A
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