Its not hard. You need a jack and a 2x4 to suport the tank.
Remove the filler neck bracket bolt,disconnect fuel lines and breather line,support tank with jack and board, loosen 2 bolts that hold the straps,lower slowly unplug the harness at rear of tank. manuver the tank to get the filler neck out of its grommet. once on the ground you need a hammer and a screw driver ( they recomend a non sparking tool like a brass punch but a scre driver will suffice) to remove the lock ring. the hard part is wiggling the pump all around to get it back in the sump.
having a buddy to help you is best.