How to Adjust Derailleur on Your Mountain Bike Like a Pro
To adjust the derailleur on a mountain bike, first, shift the gears to the highest gear and loosen the derailleur cable. Then, align the derailleur with the gears by adjusting the high and low limit screws. Next, shift through all the gears and fine-tune the cable tension using the barrel adjuster until shifting is smooth and accurate. Make sure to also check the derailleur hanger for any damage that may affect shifting.