Pt.1 Shimano Deore XT M730 6 speed thumb shifter : restore service clean disassembled

Part 1. Shimano Deore XT ST-M730 6 speed thumb shifter. 2nd version of the Deore thumbshifter. Previously the M700 {yet to get}. This one is made for a 6 speed drive train with a extra 7th click. Much like the M732 and the “8th” click. Think this was released 86/87 until 89 when the 3rd version came out.