2005 Polaris Sportsman 400/500 Service Manual, Page 222Get this manual
TRANSMISSION NOTE: Note the the timing marks on the shift gears (F) for reassembly13Mark chain and gear rotation direction for reassemblyNote location of chain tensioner camIf fully extended, chain is worn beyond service limitReplace chain and chain tensioner shoe
Timing Marks
12Remove all cover bolts (22)Using suitable pry tools, remove the cover using the designated pry pointsTap cover with soft face hammer to removeThe pry points are indicated by the white arrows in the photo below