Honda CR250R Owner's Manual & Competition Handbook page 78

7. Check the upper drive chain roller (7) and
lower drive chain roller (8) for wear or
damage.
Replace if necessary.
Upper roller: 1.0 in (25 mm)
Lower roller: 1.2 in (31 mm)
(7) upper drive chain roller (8) lower drive chain roller
Install the upper and lower drive chain rollers if
they were removed.
Upper and lower rollers:
9 lbf·ft (12 N·m, 1.2 kgf·m)
(8)
(7) upper drive chain roller (8) 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)
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
(7)
(5) with the same reference marks (6) on both
sides of the swingarm.
(8)
(6)
(1) rear axle nut
(2) lock nut
(3) adjusting bolt
(7)
3. Tighten the rear axle nut to the specified
torque:
94 lbf·ft (128 N·m, 13.1 kgf·m)
4. Recheck chain slack 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
torque:
20 lbf·ft (27 N·m, 2.8 kgf·m)
(1)
(4)
(2)
(3)
(5)
(4) index mark
(5) axle plate
(6) reference marks
Drive Chain
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.
Servicing Your Honda
73