Drive Chain Slack Inspection - Honda 2010 CRF250R Service Manual

MAINTENANCE
Route
the
wires
Install the drive chain guide, drive sprocket cover and
properly
bolts.
(page
1-21). Tighten the bolls securely.
3·20
Clamp the alternator/CKP sensor wire with the wire
guides.
DRIVE CHAIN SLACK INSPECTION
Raise the rear wheel off the ground by placing a
workstand under the engine .
Measure the chain slack, on the upper chain run.
midway between the sprockels.
CHAIN SLACK :
' 10,'11 : 30 - 40mm(1 .2 - 1.6in)
After ' 11 : 25 - 35 mm (1 .0 - 1.4 in)
I
NOTICE
I
Excessive chain slack, '10,
'11: 55
mm
(2.2
in),
After
'11: 50
mm (2.0 in) or more, may damage the
frame.
"WARNING
Amputation hazard. Never inspect or adjust the
drive chain while the engine is running.
ADJUSTMENT
If the chain needs adjustment, loosen the rear axle nut
r"""'7'~:;;:;o;;-;-;;:;:;;,,~
and drive chain adjuster lock nuts, and turn the
adjusting botts.
Check that the adjusting block index marks are in the
same position on each side , then tighten the rear axle
nut to the specified torque .
TORQUE: 128 N·m (13.1 kgf·m , 941bHt )
After torquing the axle nut, seat the adjusting bolls
snugly against Ihe adjusting block, and tighten the drive
6.'--"
chain adjuster lock nut to the specified torque while
holding the adjusting boll.
TORQUE: 27 N·m (2.8 kgf-m, 20 IbHtj