3-16 4181384 First Edition
ENGINE
3
Thermostat
Removal and Installation
See Figures 3-25 and 3-26.
NOTE
Naturally aspirated engine shown; turbocharged engine
is similar.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-7.)
2. Raise the hood.
!
WARNING
3. Drain the cooling system.
Figure 3-25
4. Loosen hose clamps (2 and 5) and remove hose (4)
from thermostat housing (3) and radiator/hydraulic oil
cooler (1).
Figure 3-26
5. Remove two screws (6) and lock washers (7).
6. Remove thermostat housing (8), gasket (9), and
thermostat (10) from spacer (11).
NOTE
Perform step 7 if removing the spacer from the engine.
7. Remove two socket-head screws (14), and remove
spacer (11) and gasket from engine (13).
Installation Notes
• Install the thermostat by reversing the order of
removal.
• Use new gaskets during installation.
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.
4
TN1199
3
1
5
2
9
TN1200
7
8
10
6
11
12
13
14
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