How To Fix Bike Brakes Lever. While removing the calliper to get at the brake pads, use an allen wrench to gently unscrew the bolts on the center of the calliper. They're really a solution for a poorly fit bike, where the rider can't reach the regular brake levers.
If the grip is touched, it implies that the brake cables are loose. One handy tip is to keep a bowl next to you to collect bolts and screws that might come off the electric bike as you resolve this issue. Adjusting the brakes by tightening the brake cables through the caliper.
With your brake clamp just loose enough to move the lever lengthwise along the bars, put the brake clamp against your grip and slowly slide it toward your stem a centimeter or three, until your index finger rests naturally on the end of the lever while in a comfortable riding position.
With the brake lever pulled, tighten the caliper bolts equally and evenly. If the grip is touched, it implies that the brake cables are loose. Adjusting the brakes by loosening the lock nut to tighten the brake cable. To move the brake pad away from the rim, increase the spring tension by screwing inwards.