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Location
The PTO switch is located on the lower left side of the
dash (Figure 230).
Figure 230
How it Works
When the PTO switch is pulled out to the "ON" position,
contacts inside the switch electrically connect various
terminals. One terminal is connected to the wire that
goes directly to the electric clutch. When the PTO is
pulled out to the "ON" position, voltage flows to the
electric clutch and engages.
Testing
1.
Disengage the PTO, set the parking brake, and
turn the ignition to OFF and remove the key.
2.
Disconnect the wiring harness from the PTO
switch.
3.
Press in on the locking tabs, on each side of the
switch, and pull the switch out of the dash
(towards the rear of the tractor).
4.
Verify that there is continuity between the
appropriate terminals in the "ON" and "OFF"
positions, Figure 231.
5.
Replace the switch if your test results do not
correspond with those given in Figure 231.
400XT Series Tractor Service Manual
ELECTRICAL SYSTEMS
6.
Mount the PTO switch back into the dash and
reinstall the wiring harness.
MVC-387X
Seat Switch
Purpose
The switch is in the safety circuit. If the engine is
running and the operator vacates the seat with either
PTO engaged or the parking brake off, the engine will
shut down.
Figure 231
Figure 232
2-24
MVC-390X
4 - 7
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