Yamaha WR450F 2021 - Installing the Exhaust Pipe and Muffler

ENGINE REMOVAL
5-11
TIP
Apply molybdenum disulfide grease to the pivot
shaft.
EAM30167
INSTALLING THE EXHAUST PIPE AND
MUFFLER
1. Install:
• Gasket
• Exhaust pipe 1 “1”
• Nut (exhaust pipe 1) “2”
TIP
First temporarily tighten all nuts to 7 N·m (0.7
kgf·m, 5.2 lb·ft). Then retighten them to 10 N·m
(1.0 kgf·m, 7.4 lb·ft).
2. Install:
• Clamp
• Exhaust pipe 2 “1”
• Bolt (exhaust pipe 2) “2”
TIP
Make sure that the exhaust pipe band “1” does
not ride on the projection “a” on the exhaust pipe
“2” or silencer “3”. Be sure to insert the projection
“b” into the slot in the exhaust pipe (or silencer).
3. Install:
• Clamp
• Silencer “1”
• Bolt (silencer) “2”
4. Tighten:
• Bolt (exhaust pipe 2)
Engine mounting bolt (upper
side)
45 N·m (4.5 kgf·m, 33 lb·ft)
Nut (exhaust pipe 1)
10 N·m (1.0 kgf·m, 7.4 lb·ft)
T
R
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9
2
6
5
4
3
1
4
7
6
M
8
8
9
10
10
5
New
T
R
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.
222
11
A. Exhaust pipe 1 and exhaust pipe 2
B. Exhaust pipe 2 and silencer
Bolt (silencer)
30 N·m (3.0 kgf·m, 22 lb·ft)
2
2
2
1
1
21
a
b
a
b
A
3 1
B
T
R
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2
2
2
1