SIS REAR INDEX SHIFTING SYSTEM | SHIMANO BIKE COMPONENT
How to adjust bike Derailleur gears Shimano SIS gear setup adjusting bike DIY - YouTube
SHIMANO TOURNEY TY Long Cage Rear Derailleur 6/7-speed | SHIMANO BIKE-EU
7 speed shimano gear set. Can't shift and is stuck between 6th and 7th gear so the chain keeps getting out. The shifter(one in handlebar) is also stuck but freely rotates between