Honda CRF250X 2007, Owner'S Manual & Competition Handbook

Page: 101 / 185

(1) upper drive chain roller (2) lower drive chain roller
96
Servicing Your Honda
Drive Chain
Drive Chain Sliders
1. Check the chain slider (1) for wear.
If the wear is 3/16 in (5 mm) or more, replace
it.
(1) chain slider
2. Check the chain guide slider (2) for wear.
Replace the chian guide slider if it is worn to
the bottom of the wear limit groove (3).
(2) chain guide slider
(3) wear limit groove
Drive Chain Rollers
1. Measure the diameter of the drive chain
rollers. Replace them if below the service
limit.
Service Limit:
UPPER ROLLER: 1.1 in (29 mm)
LOWER ROLLER: 1.2 in (31 mm)
2. Replace the roller if necessary as follows.
Install the upper drive chain roller (Green) (1)
and lower drive chain roller (Black) (2) as
shown.
Tighten the drive chain roller bolt and nut to
the specified torque.
Upper roller bolt: 9 lbf·ft (12 N·m, 1.2 kgf·m)
Lower roller nut: 9 lbf·ft (12 N·m, 1.2 kgf·m)
(1)
(2)
(3)
(1)
(2)
Lubrication
Lubricate the drive chain with #80 – 90 gear oil
or drive chain lubricant designed specifically for
use with O-ring chains. Wipe off the excess oil or
chain lubricant.
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