How to Change Your Mountain Bike Crank in 7 Simple Steps
To change the crank on a mountain bike, first remove the pedals using a pedal wrench. Next, remove the bolts that attach the crank arms to the bottom bracket spindle using a crank puller tool. Once both crank arms are removed, remove the bottom bracket and clean the area. Install the new bottom bracket if necessary, following the manufacturer’s instructions. Then, attach the new crank arms to the spindle and tighten the bolts. Finally, install the pedals back onto the crank arms.