Not really @Khanh845, the former owner adapted it to the rear brake lever, but I'm going to make an adaptation here so that I can use the rear brake normally. There is a bicycle gear shifter that I think would do, it is in two positions and I can put it in the same location as the key, so I can bring the piece to Brazil, the value is very high and it pays to adapt it ...
With that I'm continuing the restoration here, this time it's the recoil starter that is missing the internal parts and with that I'm researching to make one more adaptation, the parts are difficult to get from what I'm seeing, so I get some photos I'll send here