i just got a 2004 honda crf50f and i was wondering what can you do to the hose that comes out of the gas cap and whats it for?...and when i got the dirt bike i saw it had a ignition but i dont got a key! what can i do to use the ignition? and why to you even need a ignition? and after you start it with the key in the ignition what do you do after that to start the bike?