Polaris SPORTSMAN 600 Service Manual page 219

NOTE: It may be helpful to place a mark just above
the keyed spline for reference.
7. Remove the shift shaft and detent lever.
8. Note the timing marks on the shift gears. Remove
the shift gears from the case.
NOTE: It may be helpful to accent the timing marks
using a white marking pen for reference.
9. Remove the bolts on the LH transmission case.
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 the
forks' pins disengage fro the drum.
11. Remove the shift drum.
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.
TRANSMISSION
8.9