How do I take the rear tire off of a 2004 kawasaki nomad

there a small bolt missing on the front of my kawasaki 1500 nomad that r not there and a little fuel come out from time to time do u no what it call so i can get another one to put there ? and after changing the oil bike wont shift gears help ? only first gear

TO ALL VN1500 OWNERS....This once happen to me,
I went to the garage to start the bike "Nothing ""The first thing is the lights are bright but no turning over,Next you think the solenoid is kaput but the answer was very simple and the fix takes 30 seconds..
Do not take the bike to bits looking for other problems and look at the clutch leaver and you will see some wires going into a plastic shroud going into the switch in the clutch leaver, Make sure this has not popped out if its connection as it some times may do after a few years due to constant turning on the handlebars,
When this is not connected you will have a bike that will not fire up but comes alive and you will hear a clicking noise but this is from the engine carb area and every function of the bike will work but it will not turn over, Worth looking at and saves sixteen quid for a starter unit you never needed.

most bikes you dont need any special tools, a c clamp will do to press in the caliper pistons. takes about an hour to do.