Exmark 850000 AND HIGHER manual Safety Interlock System, Driving Forward or Backward

Operation

The Safety Interlock System

CAUTION

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.

Understanding the Safety Interlock System

The safety interlock system is designed to prevent the engine from starting unless:

•The blades are disengaged.

•The motion control levers are in the neutral position.

•The parking brake is engaged.

The safety interlock system is designed to initiate engine shutdown when:

•The parking brake is disengaged and the operator gets off machine.

•The PTO is engaged and the operator gets off machine.

•The parking brake is disengaged and levers are in and the operator gets off machine.

•The parking brake is engaged and motion control levers are in.

Testing the Safety Interlock System

Test the safety interlock system before you use the machine each time

1.Check starting circuit. Starter should crank with parking brake engaged, PTO disengaged and motion control levers moved out in the neutral lock position. The operator does not need to be in the seat to start the engine.

Try to start with operator in seat, parking brake disengaged, PTO disengaged and motion control levers in the neutral lock position - starter must not crank.

Try to start with operator in seat, parking brake engaged, PTO engaged and motion control levers in the neutral lock position - starter must not crank.

Try to start with operator in seat, parking brake engaged, PTO disengaged, and the left motion control lever in, starter must not crank, repeat again with the right lever in, then with both levers in - starter must not crank.

2.Check kill circuits. Run engine at one-third throttle, disengage parking brake and raise off of seat (but do not get off of machine) engine must initiate shutdown.

Run engine at one-third throttle, engage PTO and raise off of seat (but do not get off of machine) engine must initiate shutdown.

Run engine at one-third throttle, with brake disengaged, move levers in and raise off seat (but do not get off of machine) engine must initiate shutdown.

Again, run engine at one-third throttle, brake engaged, and move left motion control lever in

-engine must initiate shutdown.

Repeat again moving the right lever in, then moving both levers in - engine must initiate shutdown whether operator is on seat or not.

Note: If machine does not pass any of these tests, Do Not operate. Contact your authorized EXMARK

SERVICE DEALER.

Important: It is essential that operator safety mechanisms be connected and in proper operating condition prior to use for mowing.

Driving Forward or Backward

The throttle control regulates the engine speed as measured in rpm (revolutions per minute). Place the throttle control in the Fast position for best performance. Always operate in the Fast (full throttle) position.

CAUTION

Machine can spin very rapidly by positioning one lever too much ahead of the other. Operator may lose control of the machine, which may cause damage to the machine or injury.

•Use caution when making turns.

•Slow the machine down before making sharp turns.

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