114
Maintenance
If you can’t shift onto the high or low gear or the chain comes off on either side, then you will need to
adjust the derailleur.
Adjusting the rear derailleur
The high limit screw
–
Marked with a ‘H’, sets the limit for the higher gears and prevents the chain from falling off the
smallest sprocket.
The low limit screw
–
Marked with an ‘L’, sets the limit for the lower gears and prevents the chain from falling off the
largest sprocket.
Adjust the high limit by rotating the screw on your
derailleur marked 'H' so that it lines up with the
smallest cog. Turn the screw clockwise to move
the chain out and anti-clockwise to move it in.
Adjust the low limit by rotating the screw on your
derailleur marked 'L' so that it lines up with the
largest cog. Turn the screw anti-clockwise to
move the chain out and clockwise to move it in.
The limit screws can be located on the back of
the derailleur.
H-screw
clockwise
H-screw
counter
clockwise
L-screw
clockwise
L-screw
counter
clockwise
Frame
Frame
H-screw
clockwise
H-screw
counter
clockwise
L-screw
clockwise
L-screw
counter
clockwise
Frame
Frame
The high limit screw
The low limit screw
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