2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 320Get this manual
TRANSMISSION Gear Cluster Disassembly 20Remove the bearing from the reverse shaft using bearing pullerSlide the engagement dog off of the reverse shaft (see Figure 8-1)to separate the assembly
25Remove the rest of the ball bearings from each shaft26Disassemble the other end of the reverse shaftRemove the retaining ring, washer, gear and needle bearing from the reverse shaft (see Figure 8-2)
Figure 8-1 21Remove the retaining ring and washer from the reverse shaft (see Figure 8-1)22Remove the bearing from the input shaft using bearing puller (see Figure 8-1)23Remove the 33T gear and needle bearing from the reverse shaft (see Figure 8-1)24The reverse shaft should slide out of the silent chain