To raise the front of the tank, unscrew the bolt directly behind the triple tree that holds the forks. This bolt might be hidden if you have a steering damper, so you would have to take the damper off first.
To remove the tank, you also have to remove the hardware from the rear of the tank:
Use the key to pop the passenger seat.
There's 10mm bolt in the front of the compartment that you need to remove. Once that is out you can slide a latch over that is holding down the front seat.
Remove the front seat and it will reveal the rear mounting hardware of the tank.
Lift up the tank and un-plug the fuel lines and fuel pump.
When you turn your bike on, does it return the favor?