Rear derailleur
To adjust the small cog position
1. Shift the chain onto the smallest rear cog and the largest front chainring.
2. Loosen the cable clamp bolt until the cable is free.
3. Stand behind the bicycle to see that the smallest rear cog, the chain, and
the two derailleur pulleys are in line.
4. If they are not aligned, turn the high gear adjusting screw (usually marked “H”,)
until this line is established.
5. While pulling on the cable, up-shift until the shifter is in the small cog position.
6. On the shifter or down tube, turn the adjusting barrel all the way clockwise.
Turn the adjusting barrel on the rear
derailleur all the way clockwise, and then one turn counter-clockwise.
7. Insert the cable into the clamp bolt groove on the rear derailleur, pull the
shift cable taut, and tighten the cable clamp bolt to 44-60 lb•in (5.0-6.8 N•m).
To adjust the large cog position
1. Turn the low gear adjusting screw on the rear derailleur (usually marked “L”)
far enough counter-clockwise that. it will not restrict the movement of the derailleur.
2. Carefully shift the chain onto the smallest front chainring and the largest rear cog.
Do not over-shift the rear derailleur, or the chain may wedge between the large cog and the spokes.
3. Position the rear derailleur pulleys in line with the largest cog.
4. Turn the low gear adjusting screw clockwise until it meets resistance.
If you have turned it too far, the derailleur will move toward the outside of the bicycle.
5. Go through the various gear combinations. Make sure the chain does not fall off when you shift.
40
Cooper
Bicycle Owners Manual
Rear Mech
A - Adjustimg Screws
B - Barrel adjuster
C - Cable Clamp Bolt
D - Cable
A
B
C
D
MANUAL 20.11.12 2/7/13 00:00 Page 45
