2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 204Get this manual
BODYSTEERINGSUSPENSION STEERING
Handlebar Block Installation Procedure
Clean knurling when repositioning handlebars
1The pin (A) on the bottom side of the top handlebar block faces down and to the front of the ATV2The bottom handle bar block has side with holes, the side with holes faces up and to the front of the ATV3Align the pin (A) in the top block with the middle hole (B) in the bottom block for proper installationThe pin (A) and middle hole (B) should face the front of the ATV