Yamaha WR450FB 2012 Owner's Service Manual page 205

b. After riveting, make sure the diameter be-
tween the edges "b" of the connecting pin "2"
is 5.5-5.8
mm
(0.22-0.23 in).
2
c. After riveting, make sure the space "c",
which is inside of the connecting link "3" and
inside of the connecting plate
"1 ",
is
14.1-
14.3 mm (0.56-0.65 in).
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2. Lubricate:
• Drive chain
Recommended lubricant
- t
Chain lubricant suitable for 0-
ring chains
3. Install:
•Drive sprocket
• Lock washerlm
•Drive sprocket nut
Refer to "ENGINE REMOVAL" on page
6-1.
Drive sprocket nut
75 Nm (7.5 m·kgf,
54
ft-lbf)
ECA1DX1014
~~~~~~~~~~
Never install a new drive chain onto worn
drive chain sprockets; this will dramatically
shorten the drive chain's life.
CHAIN DRIVE
4. Adjust:
• Drive chain slack
Refer to "ADJUSTING THE DRIVE CHAIN
SLACK" on page
3-23.
~
Drive chain slack
v
~
48.0-58.0 mm (1.89-2.28 in)
ECA13550
IBJI~~~~~~~~~
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
swingarm or cause an accident. Therefore,
keep the drive chain slack within the speci-
fied limits.
5-74