Service Manual

ELECTRICAL SYSTEMS
6 - 8 260 Series Tractor Service Manual
Clutch Burnishing Procedure
The clutch should be burnished as part of the pre-
delivery service, or whenever a new clutch is installed.
Burnishing polishes the clutch plate, allowing for
smooth clutch engagement.
With a PTO driven attachment installed (i.e., mower,
snowthrower, or tiller), run the engine at half throttle.
Engage and disengage the clutch 5 times (10 seconds
on/10 off).
Increase engine RPM to ¾ to full throttle. Engage and
disengage clutch 5 times (10 seconds on/10 seconds
off). Check and adjust the PTO clutch air gap (not
required on 2000 and later models).
PTO Switch
Purpose
The PTO switch is typically used to turn on the Electric
PTO Clutch and to function as part of the safety
interlock system.
Location
The PTO switch is located on the lower left side of the
dash (Figure 234).
Figure 234
MVC-387X
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 235.
5. Replace the switch if your test results do not
correspond with those given in Figure 235.
6. Mount the PTO switch back into the dash and
reinstall the wiring harness.