Resolution: This is most commonly brought on by badly set up derailleur limit screws and these would require changing. It can even be caused by a bent derailleur hanger Pedal the crank ahead and manually drive the derailleur to the biggest cog. If this motion triggers the chain to come https://indexingbikegears04692.blogsuperapp.com/33366546/the-ultimate-guide-to-indexing-bike-gears