Honda CRF450R 2009 Service Manual page 103

Install the drive chain guide. drive sprocket cover and
bolts.
Tighten the bolts securely.
AL TERNATQRlCKP SENSOR
WIRE (Except ' 13 - " 4)
MAINTENANCE
Except
'13· '14- Secure the atlernator/CKP sensor wire with the harness
Route the
wires guides.
properly
(page
1-23),
DRIVE CHAIN SLACK INSPECTION
wm"'tand unde< the engine.
\J
L /
Raise the rear wheel off the ground by placing a
~
_!''!1M;J~II~[~ ~~ ,~~
.
~
' "
~
Amputation hazard. Never inspect : r adjust
the ., .
....J:.
~rffl~
drive chain while the engine is running.
I ~
,0
~
' .
~\
}
~~~ ~~'\
:>
Measure the chain slack, on the upper chain run, ,1'0 ' 'J
midway between the sprockets.
:,1
1
CHAIN SLACK :
'09- '11 30-40 mm (1.2-1.6In)
'12- '15 25-35mm(1.0-1.4in)
After '15 30-40mm(1.2 - 1.6In)
NOTICE
Excessive chain slack, 55 mm (2.2 in) or more, may
damage the frame .
ADJUSTMENT
If the chain needs adjustment. loosen the
tear
axle nul
[:;!>!.li
and drive chain adjusler lock nuts, and tum the
adjusting bolts.
Check that the adjusting block index marks are in the
same position on each side, then lighten Ihe tear axle
nullo the specified torque.
TORQUE : 128 N·m (13.1 kgf·m , 94Ibf·ft)
After torquing the axle nut, seat the adjusling bolts
snugly against the adjusting block, and tighten the drive
"-'&;;~~;\.~,.
chain adjuster lock nut 10 the specified torque while
I.
holding the adjusting bolt.
TORQUE : 27 N'm (2.8 kgf·m , 20 Ibf·ft)
,
j
4-23