Repair guides › Drivetrain
Adjust front derailleur
Shifts the chain between chainrings on 2x/3x bikes. A cage pushes the chain sideways; H and L limit screws set the range.
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Tools
- Ball-end hex key set (1.5–10 mm): Park Tool HXS-1.2 Professional L-Shaped Hex Set ($$)
- JIS #2 screwdriver: Vessel Megadora JIS screwdriver #2 ($)
- Repair stand: Park Tool PCS-9.3 Home Mechanic Repair Stand ($$$$)
Compare Good, Better and Best for each tool
Steps
- Set cage height 1–3 mm above big ring teeth, cage parallel to the rings.
- Small ring + biggest cog: set L screw so inner cage just clears the chain.
- Attach cable snug.
- Big ring + smallest cog: set H screw so outer cage just clears.
- Fine-tune with barrel adjuster.
Torque
| Fastener | Torque |
|---|---|
| FD clamp bolt | 5–7 Nm |
| FD cable anchor bolt | 5–7 Nm |
Signs it needs doing
- Chain drops off inside
- Rubs in some gears