Exmark 4500-497 manual Check Safety Interlock System, Engine must initiate shutdown

Maintenance

Voltage	Percent	Maximum	Charging
Reading	Charge	Charger	Interval
		Settings
12.6 or	100%	16 volts/7	No
greater		amps	Charging
			Required
12.4 – 12.6	75–100%	16 volts/7	30 Minutes
		amps
12.2 – 12.4	50–75%	16 volts/7	1 Hour
		amps
12.0–12.2	25–50%	14.4 volts/4	2 Hours
		amps
11.7–12.0	0–25%	14.4 volts/4	3 Hours
		amps
11.7 or less	0%	14.4 volts/2	6 Hours or
		amps	More

Check Safety Interlock System

Service Interval: Before each use or daily

Note: To prevent engine cut-outs on rough terrain the seat kill switch has a 1/2 second delay.

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 the 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 after approximately 1/2 second has elapsed (seat has time delay kill switch to prevent cut-outs on rough terrain).

Run engine at one-third throttle, engage PTO and raise off of seat (but do not get off of machine) engine must initiate shutdown after 1/2 second has elapsed.

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 after 1/2 second has elapsed.

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.

3.Check the PTO circuit. See the FR524, FR604, and FR724 Operator’s manual to become familiar with the deck operation. Open the folding deck latches, disengage the park brake, move the motion control levers in to neutral, and disengage the PTO. Lower the deck until the PTO switch arm is no longer depressing the PTO “kill” switch (see Figure 8).

Figure 8

Left Side—Inside of Hitch Shown

1.PTO “Kill” Switch

2.PTO Switch Arm

3.Lower deck until arm Does Not contact the switch.

Run the engine at half throttle and pull up on the PTO engagement switch.

The PTO must not engage.

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