To remove the kick starter pin (23 51 1 056 124), loosen the nut until it is flush with the pin. Spray some WD40 or equivalent on to the pin. Tap on the nut to loosen the pin. You can apply a little heat from a heat gun or propane torch to the kick starter to help free up the pin. Some old bicycle shops may have a c-clamp tool to help remove a tapered pin.