1. Check and clean the gear cables
2. Adjust the gear indexing
3. Inspect and replace worn components
Check and clean the gear cables
Inspect the gear cables for any signs of fraying or damage. If they appear worn, replace them with new cables. Clean the cables and housing to remove any dirt or debris that may be causing shifting issues.
Adjust the gear indexing
Use the barrel adjusters on the shifters and derailleurs to fine-tune the gear indexing. Ensure that the chain moves smoothly between gears without skipping or hesitating. Make small adjustments and test the shifting after each one.
Inspect and replace worn components
Check the condition of the cassette, chain, and derailleur pulleys. Worn components can cause poor shifting performance. Replace any worn parts with new ones to improve the gear shifting mechanism.