Grab it by the rear rack and yank it back and forth, if it's worn, easy to see the movement. I had a machine shop make bronze bushings for my 97 Sportsman. It's a bitch of a job, but you won't believe how much better it handles. Those plastic bushings are junk, imho. Good time to replace chain and sprocket if they are worn. Check tightness of all engine mount bolts and transmission mounting bolts. Yes, locktite everything. 2 strokes loosen everything if not locktited. Machine shop charged me $55 for 2 bronze bushings.
2001 Arctic Cat 500 manual shift. 7,000 miles 30" Mudzillas , 5 degree timing advance ,Web 228 race cam,K&N, AEM wideband, drilled and clipped, Dynojet needle,muffler mod, rear sway bar,Warn 3000 winch, Trail Tech Voyager. 1996 Polaris Sportsman 400l , 2002 AC 400 FIS manual shift.