Les vitesses de mon vélo ne passent pas, problème du levier de vitesse Shimano: SOLUTION

Many of you have indexed shifters that don't pull the cable. This is very common on city/hybrid/racing bikes from the 90s and early 2000s. The problem stems from the grease used at the time, which jams the pawls. In this video, I teach you how to solve this very common problem, especially when the bikes have been unused for a long time. Didn't you know? I published a book (The Man Who Watched the Wheel Turn)! If you like my videos and personal reflections, I think you'll enjoy it. Here's the link: https://www.amazon.fr/dp/B0DT6Z7MFN