GASS WILL COME OUT OF YOUR TANK!!!!!!!
If you do what is listed above you will have gass everywere. It says you have a 98 750, this would tell me that it is a FI bike. There are 4 lines on your tank. 1)gass 2)return 3)breather 4)over flow.
Lift the corner of your seat and take out the 6mm alan bolts (on on each rear corner).
Take off the rear tail, there should be 8 screws. 2 from the bottom (above the tail lights), two inside the trunk on the top, they are inside a rubber bumper to hold up the rear seat. Two crome ones on the side and then two small ones at the back of the riders seat.
If you still have the smog on it, this will take a bit longer. If the smog is there, you will have to trace the hose that comes out of the rear, left side tank. This should be routed to the right side of the bike and go into a black can mounted to the subframe under your right leg. The center hose is the one you need to pull off. If you like, you can trace the other two hoses back to the motor and cap them off.
Pull up the over flow (the other hose that comes off the back of your tank
remove the two bolts in the front of the tank and prop up the tank with your tank stand.
remove the fuel line (short line with a black plastic end). to remove it there should be two blue tabs in the fitting, push those in and the line should come off.
Then remove and
PLUG the return line. this is the hose with the spring looking rap over it. There is no shut off for this line, and since it comes from the bottom of the tank, ANY gas you have in the tank will come out of it.
Now you can lower the tank and remove the two bolts from the back of it. Lift the tank and your done...
John