Operator's Manual

Operation
19
The Safety Interlock System
Understanding the Safety Interlock
System
The safety interlock system is designed to prevent the
engine from starting unless:
• You are sitting on the seat
• The parking brake is on “ENGAGED”
• The power take off (PTO) is disengaged “OFF”
• The motion control levers are in neutral
The safety interlock system also is designed to stop
the engine when the traction controls are moved with
the parking brake on “ENGAGED” or if you rise
from the seat when the PTO is “ON” engaged.
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. Sitting on the seat, “ENGAGE” parking brake
and move PTO “ON”. Try starting the engine;
the engine should not crank.
2. Sitting on the seat, “ENGAGE” parking brake
and move PTO “OFF”. Move either motion
control lever (forward or reverse). Try starting
the engine; the engine should not crank.
3. Sitting on the seat, “ENGAGE” parking brake,
move PTO “OFF” and lock the motion control
levers in neutral. Now start the engine. While the
engine is running, release the parking brake,
engage the PTO and rise slightly from the seat;
the engine should stop.
4. Sitting on the seat, “ENGAGE” parking brake,
PTO “OFF” and lock the motion control levers
in neutral. Now start the engine. While the
engine is running, center the motion controls and
move (forward or reverse); the engine should
stop.