Drive Chain Roller; Drive/Driven Sprocket - Honda CRF450X 2005 Service Manual

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MAINTENANCE
DRIVE CHAIN ROLLER
Install the dnve
dlsm rollers With
the
'-
' mark factnQ
""t.
Remove the
lete step bracket (page
15-30).
Inspect
the
drive
chain
roilers for
excessive wear or
binding.
SERVICE
LIMIT:
Minimum roller
0
.0
.:
Upper:
39
mm
11.5 In)
Lower:
35 mm (1 .4 In
)
Replace the rollers
if necessary. and
tighten the
roller
bolt and nut
to the
specified
torque.
TORQUE:
Drive
chain
roller
bolt:
12
N'm
11 .2
kgf-m,
9
rbl·tt)
Dri\l8
ch ain
roller
nut
:
12
N 'm (1.2 kgf-m
,
9
rbf·tt)
NOTE:
Upper
roller:
Green
Lower
roller: Black
DRIVE/DRIVEN SPROCKET
~-
~
MARK
Inspect the
drive and
driven
sprocket teeth
for
wear
, - - - - - - - - - - - - - - - - - - ,
4-28
or
damage, replace
them if necessary.
Never
use a new drive chain on worn sprockets.
Both
chain and sprockets
must be
in good condi-
tion.
or
the new replacement chain
will
wear
rap-
idly.
Check the bolts and nuts on
the drive
and driven
sprockets.
If
any are loose, torque them.
TORQUE:
Drive s
procket
bolt:
31 N'm
(3.2
kgf·m,
23
IbUtl
Driven sprocket
nut:
32
N 'm
(3.3
kgf·m.
24
Ibf.ftl
NORMAL

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