Finally the machine is finished! I take the seat for the first time! I have no idea what will happen!

Will nothing happen? Will it kill me? I feel like a man holding a pistol to his head! I put my hand on the lever. Anything could happen if I pull it! Would the machine work? Would I end up lost in time? What if the machine didn't come with me? The more I delay, the more nervous I feel!

Should I pull the lever? Or should I check my bag of supplies? But how can you prepare for something when you have absolutely no idea what to expect? Or should I check the machine over one last time? Or do something else?