1. Set the on/off switch in the ioffi position, the unplug the power cord from the wall outlet.
2. Loosen and remove the two bolts that fasten the stairarm pedal onto the stairarm.
3. Remove the stairarm pedal from the stairarm.
4. Set the replacement stairarm pedal at it's mounting position on the stairarm.
5. Install and hand tighten the stairarm pedal mounting hardware removed in step 2. Torque the stairarm pedal mounting bolts to 60 in/lbs.