Jacobsen AR3, Technical/Repair Manual

Page: 145 / 342

4-88 4181384 First Edition
ELECTRICAL
4
Installation Notes
• Install the engine oil pressure switch by reversing the
order of removal.
• Apply Teflon
®
tape to the threads of the oil pressure
switch before installing.
Engine Temperature Switch
Removal and Installation
See Figures 4-88 and 4-89.
NOTE
Naturally aspirated engine shown; turbocharged engine
is similar.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-7.)
2. Disconnect the battery negative (–) cables at the
battery.
3. Open the engine hood.
Figure 4-88
!
WARNING
4. Rotate pressure cap (1) 1/2-turn to relieve pressure
in cooling system.
Figure 4-89
NOTE
Label all wires before disconnecting to ensure correct
installation.
5. Disconnect wiring connector (2) from the engine
temperature switch (4).
6. Remove the engine temperature switch (4) from the
thermostat housing (3).
Installation Notes
• Install the engine temperature switch by reversing the
order of removal.
• Apply Teflon
®
tape to the threads of the engine
temperature switch before installing.
Required Materials
Telfon
®
Tape
Engine coolant is hot and under pressure! Allow
the cooling system to cool completely before
performing service.
Rotate the filler cap 1/2-turn counterclockwise
and allow pressure to vent before removing filler
cap.
TN0997
1
Required Materials
Telfon
®
Tape
4
TN1104
2
3