Testing the Key Switch
1. Park the machine on a level surface, lower any attachments to the ground,
engage the parking brake, and remove the key from the ignition.
2. Switch the main circuit breaker to the O
FF position, to de-energize the electrical
system.
3. Raise the hood and locate the key switch.
4. Disconnect the wire harness and remove the key switch.
5. Use a multimeter (ohms setting) to determine whether continuity exists between
the various terminals for each switch position.
6. Replace the switch if necessary.
7. If the switch tests correctly and a circuit problem still exists, check the wire
harnesses; refer to 9 Appendix A, page 9–1
8. Install the switch, connect the wire harness, and close the hood.
9. Switch the main circuit breaker to the O
N position, to energize the electrical
system.
Power Take Off (PTO) Enable Switch
POSITION CLOSED CIRCUITS
G423845
OFF (DOWN) NONE
ON (UP) COM B + NO B
The PTO switch is located on the control panel. The switch is pulled up to engage the
PTO and pushed down to disengage the PTO.
4520Z Page 6–29 Electrical System: Key Switch
09.40001Rev 00
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