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Yamaha WR450F 2021 - Page 200

Yamaha WR450F 2021
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CHAIN DRIVE
4-72
c. After riveting, make sure the space “c”,
which is inside of the master link “3” and
inside of the master link plate “1”, is 12.1–
12.3 mm (0.476–0.484 in).
2. Lubricate:
Drive chain
3. Install:
Drive sprocket
Lock washer
Drive sprocket nut
Refer to “ENGINE REMOVAL” on page 5-6.
NOTICE
ECA14300
Never install a new drive chain onto worn
drive chain sprockets; this will dramatically
shorten the drive chain’s life.
4. Adjust:
Drive chain slack
Refer to “DRIVE CHAIN SLACK” on page
3-26.
NOTICE
ECA24590
A drive chain that is too tight will overload
the engine and other vital parts, and one that
is too loose can skip and damage the swing-
arm or cause an accident. Therefore, keep
the drive chain slack within the specified lim-
its.
Recommended lubricant
Chain lubricant suitable for O-
ring chains
Drive sprocket nut
90 N·m (9.0 kgf·m, 66 lb·ft)
Drive chain slack (Maintenance
stand)
50.0–60.0 mm (1.97–2.36 in)
New
T
R
.
.

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