Put the lever on, start pulling on the lever to get you past the first obstacle, then keep pulling all the way back all the while holding things together. It has to go all the way back to the little tab to the left close to my thumb. Keep it together until you can put the nut on the lever. At this point you can follow Shimano's instructions. Sorry but those are all the pictures I have and I don't want to take this thing apart again. If you do the right shifter, and are able to put it back together, you can take pictures and post an album like I did to help others. I highly recommend taking multiple pictures from every angle you can think of before you take anything complex apart.

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