Polaris Ranger 500 2x4 2007 Service Manual page 250

TRANSMISSION
8. Note the transmission gear position and mark the two shift
gears before removing them to aid with reassembly.
Remove the shift gears from the case.
NOTE: Depending on what gear the transmission is
in upon disassembly, the stamped timing marks may
not be lined up. To avoid confusion, mark the two
gears as described in Step 8.
9. Remove the bolts on the LH transmission case cover. Tap
the cover off with a soft face hammer if necessary.
10. Lift shift rail 0.5"-1" (12.70-25.40 mm). Then rotate the
shift rail / forks and shift drum, so the forks' pins disengage
from the drum.
11. Remove the shift drum.
8.6
NOTE: You may have to tap the shift drum from the
backside of the case to aid in removal.
12. Remove the upper gear cluster and shift forks. You may
need to move the assembly back and forth to aid in removal
13. Set the upper gear cluster on a flat surface and inspect the
components.