ENGINE
4247530-Rev A 3-13
3
Muffler (Diesel)
Removal and Installation
See Figures 3-18 through 3-20.
!
CAUTION
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Allow the engine to cool completely.
Figure 3-18
3. Remove nut (1), flat washer (2), and screw (3) from
the muffler bracket (12).
4. Remove screw (9), lock washer (10), and flat washer
(11) from the muffler.
5. Remove two screws (5), two lock washers (6), and
two flat washers (7), and remove heat shields (4 and
8).
Figure 3-19
6. Remove two nuts (13), lock nuts (14), flat washers
(15), and screws (16) from heat shield (17).
7. Remove screw (19), lock washer (20), and flat
washer (21), and remove heat shields (17 and 18).
Figure 3-20
8. Remove four nuts (23) and four lock nuts (24), and
remove muffler (25) from exhaust manifold (22).
9. Inspect the exhaust system for cracks, holes, and
distortion. Replace exhaust gasket.
Installation Notes
• Install muffler by reversing the order of removal.
• Install new gasket during installation.
• Tighten nuts (23) to 7.2–8.3 lb-ft (9.8–11.3 N·m).
Do not attempt to service the exhaust system
when the engine is hot. Serious personal injury
can occur.
TN3344
321
12
9 10 11
5 6 7
5 6 7
8
4
TN3345
19 20 21
151413 16
17
18
TN3346
23
23 24
24
25
22
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