khu,its a doddle to take the tank off.Start by removing the two bolts under the seat.(If its a mono,the ones to adjust the seat back and forth.)There are another two bolts under the seat pad.If its a mono,there is a peg that locates in a rubber bush in the rear subframe.Just pull the rear portion of the seat unit up to release it.(It may be tight!)If the bike is a bip,there is a couple of bolts under the passenger pad.
You can now lift the seat unit and tank up enough to reach the centre bolt.I use a bit of 2"x2" to prop up the tank while I'm undoing the 17mm bolt that connects the seat to the tank.With the seat out of the way you can disconnect the pump electrics and the fuel lines.Some bikes have a snap off union and some just a simple hose clip.Either way you can remove them without fear of fuel pouring out.Now gently lift the tank and pull it backwards.You will see the breather pipes under the cover near the ignition switch.Pull them off and the tank can be lifted clear of the bike.
Sounds a bit complecated,but with practice,its a doddle.
