The derailleur’s range of movement can be adjusted with the H and L
screws.
The L screw allows you to adjust the upper limit (on the side of the largest
sprocket).
When you loosen the L screw, the chain is positioned more towards the
outside of the largest sprocket.
The H screw allows you to adjust the lower limit (on the side of the
smallest sprocket).
When you loosen the H screw, the chain is positioned more towards the
outside of the smallest sprocket.
These actions are performed by a quarter of a turn at a time. At each
adjustment, you should achieve a perfect alignment between the
sprocket, the chain and the pulley of the rear derailleur.
Rear derailleur diagram
2. Adjusting the rear derailleur’s cable tension
To adjust a correct sprocket change, use the barrel adjuster on the rear derailleur or the handle. This
barrel adjuster allows you to adjust the derailleur cable tension and to correctly position the derailleur
depending on the chosen speed.
3. Adjusting the front derailleur’s limit screws
The derailleur’s range of movement can be adjusted with the H and L screws.
The L screw allows you to adjust the internal limit (on the side of the largest sprocket). When you
loosen the L screw, the chain is positioned more towards the outside of the smallest chain ring.
The H screw allows you to adjust the external limit (on the side of the smallest sprocket). When you
loosen the H screw, the chain is positioned more towards the outside of the large chain ring.
These actions are performed by a quarter of a turn at a time. At each adjustment, you should achieve
a perfect alignment between the chain ring, the chain and the pulley of the front derailleur.
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