Toto Aquia II Dual Flush Toilet "float arm broke" Questions

...arm to the float broke off,so I purchased a float valve repair kit ("Fits" Eljer Toilet Part - Float Valve Repair Kit - #495-0189-00 ). However, I cannot for the ife of me figure out how to ...

...can turn it back on and flush the debris out and put it back together. if its a fluid master type you can pop the top off it. and turn the float arm a 1/4 to half turn and the whole top will come ...