Here is a simple video on how to replace pedals on exercise bikes. The piece we are currently working with is a Precor 846i recumbent bike, but the same process should work on upright bikes as well. Buy Wrench: https://www.amazon.com/dp/B0C2V2T6D5?ref=cm_sw_r_cso_cp_apin_dp_4M9M7GQK8YBXBWPNW41E&ref_=cm_sw_r_cso_cp_apin_dp_4M9M7GQK8YBXBWPNW41E&social_share=cm_sw_r_cso_cp_apin_dp_4M9M7GQK8YBXBWPNW41E&starsLeft=1