Hello wpuryear. To remove your seat back simply pull the bottom of the seat back toward the dash. There are three ball pins that fit in rubber sockets. After they pop just lift up and you'll be good. mountaingoat
They did change some stuff on the 560 plastics making it easier to take off the plastics but the bench is still a problem even on those.
Had a couple of 560s in lately and every one has been easy untill i got one with a bench aswell.
"Yeah no problem ill take a look at the carb in a second just let me.... oooh holy mother of god its a bench seat, never mind"
They should just make a revision where the make the bench one piece that attaches to the base
If you own a bench seat and want an amazing machine, swap it some nice bucket or high back seats