Drive Chain Roller; Drive/Driven Sprocket - Honda 2004 CRF250X Service Manual

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Check the chain guide and chain guide slider for
alig nment, wear or
damage.
Replace the chain guide if it is damaged
or
worn
.
Replace the chain gu
i
de slider if
t
he slider is worn to
the bot1om of the wear
l
imit g roove.
DRIVE CHAIN ROLLER
Remove the
si
de
st and
(page 14-29).
Inspect the
dri
ve chain rollers for excessive wear or
binding
.
SERVICE
LIMIT:
Minimum roller
0
.0
. ('04, ' 05):
Upper:
29
mm
(1
.1 in
)
lower:
39 mm
(1 .5
in)
Minimum
roller
0 .0
.
(After
'05):
Upper:
29 mm
(1.1
in)
Lower:
31
mm (1.2
in)
'04, '05 Shown:
INSPECTION WINDOW
WEAR LIMIT
GROOVE
MAINTENANCE
CHAIN GUIDE
SLIDER
CHAIN GUIDE
Replace the
roller
if necessary. and tighten the roller
r:
A
~
ft
- e-
'
~
'O
~
5
~
'
-------:----------'
bolt/nut to the
specified
torque.
UPPER
~
ROLLEA
~
TORQUE:
Upper hott:12
N'
m
(1.2
kgf·m
,
9Ibf.ft)
Lower nut: 12 N·m
(1 .2
kgf·m.
9lbHt)
Install the drive chain upper
rol
ler (Green) with the
flat faci ng out.
'04,
'05.
Install
t
he drive chain lower roller
(Black)
with the
n
.....
"
mark facing out.
After '05.
Install the drive chain lower roller (Black) with the
flat faci ng the frame.
DRIVE/DRIVEN SPROCKET
LOWER
_~
ROLLER
~
Inspect the drive and driven sprocket teeth for wear
, - - - - - - - - - - - - - -
--
-,
or
damage, replace if necessary.
Never
use a new drive chain on worn sprockets.
Both chain and sprockets must be in good
cond
i-
tion, or the new replacement chai
n
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
Ibf.ft)
Driven
s
procket
nut:
32
N 'm
(3.3
kgf·m
,
24
IbHt)
NORMAL
3-25

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2005 crf250x

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