How to Fix Disc Brakes on Your Mountain Bike: A Guide for Cyclists
To fix disc brakes on a mountain bike, first, check if the brake caliper and rotor are clean and not damaged. If they are, adjust the brake pads to ensure contact with the rotor when the brake lever is pulled. If the brake pads are worn out, replace them. If the brake lever feels loose or spongy, bleed the brake system to remove air bubbles. Lastly, make sure the cables and housing are in good condition and lubricated properly.