3-14 4203781 First Edition
ENGINE
3
Figure 3-21
7. Loosen two clamps (8) and remove upper radiator
hose (9).
8. Loosen two clamps (11) and remove lower radiator
hose (12).
9. Disconnect engine temperature sensor lead from
engine temperature sensor (10).
Figure 3-22
10. Remove two shoulder bolts (14), lock washers (15),
nuts (16), and oil cooler pivot plates (13).
11. Remove two screws (17), flat washers (18), lock
washers (19), and nuts (20)
12. While supporting the radiator, remove six screws
(22), lock washers (23), nuts (24), and two radiator
support brackets (21).
13. Move fan shroud (25) back over fan and carefully
remove the radiator (26).
Radiator Installation
1. Install the radiator by reversing the order of removal.
2. With the lower radiator hose removed from radiator,
flush the inside of the radiator with fresh water.
!
CAUTION
3. Fill the radiator with a 50/50 mixture of good quality
ethylene glycol-base antifreeze and clean fresh
water.
4. Install the radiator cap and start the engine following
the instructions in the “Safety & Operation Manual.”
!
CAUTION
5. When the engine reaches normal operating
temperature, check and fill the coolant reservoir to
the hot full level.
Thermostat
Removal and Installation
See Figure 3-23.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Allow the engine to cool completely.
3. Raise the hood.
!
WARNING
4. Drain the cooling system, 8 qt (7.6 L).
9
10
TN2308
8
11
12
15
TN2309
14 16
26
25
13
17 18 19
22 23 24
20
21
Always use a mixture of antifreeze and fresh
water in the engine cooling system. Normally a
50/50 coolant mixture will provide freeze
protection to 37°F (3°C) and boil-over protection
in an efficient cooling system.
Allow the engine coolant to completely cool
before removing the radiator cap. Hot coolant
sprayed from the cap can cause serious personal
injury.
Never remove the radiator cap when the coolant
is hot. The engine must be shut down and cooled
before the radiator cap is removed. Very hot
coolant will be sprayed from the radiator if the
cap is loosened before the engine has cooled.
Serious personal injury can occur.
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