Honda CRF250R 2005 Owner's Manual page 88

Drive Chain
7. Check the upper drive chain roller (6) and
lower drive chain roller (7) for wear or
damage.
Replace if necessary.
Upper Roller: 1.5 in (39 mm)
Lower Roller: 1.2 in (31 mm)
(7)
(6) upper drive chain roller
(7) lower drive chain roller
If the upper drive chain roller was removed,
install the drive chain roller with its "
(8) side facing out.
Install the lower drive chain roller.
(8)
(6) upper drive chain roller
(7) lower drive chain roller
8. Check the driven sprocket nut torque values
after each race.
24 lbf·ft (32 N·m, 3.3 kgf·m)
84
Servicing Your Honda
Adjustment
1. Loosen the rear axle nut (1).
2. Loosen both the lock nuts (2) and turn the
adjusting bolts (3) counterclockwise to
decrease slack or clockwise to increase slack.
Align the index marks (4) of the axle plates
(5) with the same reference marks (6) on both
(6) sides of the swingarm.
(6)
" mark
(1) rear axle nut
(2) lock nut
(3) adjusting bolt
3. Tighten the rear axle nut to the specified
(6)
torque:
94 lbf·ft (128 N·m, 13.0 kgf·m)
4. Recheck chain stack and adjust as necessary.
5. Loosen the adjusting bolt counterclockwise
lightly until it touches the axle plate. Then,
while holding the adjusting bolt with a
wrench, tighten the lock nut to the specified
(7) torque:
20 lbf·ft (27 N·m, 2.8 kgf·m)
(8) " " mark
(1)
(2)
(4)
(3)
(5)
(4) index mark
(5) axle plate
(6) reference mark
Lubrication
Commercially prepared drive chain lubricants
may be purchased at most motorcycle shops and
should be used in preference to motor oil. Pro
Honda Chain Lube or an equivalent, or SAE 80
or 90 gear oil is recommended.
Saturate each chain joint so that the lubricant
penetrates the space between adjacent surfaces of
the link plates and rollers.