2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 284Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 284

FINAL DRIVE ADC Gearcase Piston Replacement Procedure CAUTION This repair procedure involves the use of compressed airSafety
of the piston cavitiesInstall the inner and outer piston o-ringsOuter Inner 5Place the piston in the piston cavity, aligning
the pins with the pin bossesUsing the casting and piston marks as guide as shown will aid pin alignment ADC Piston Tool PA-48542
2Repeat procedure for the other piston(See photo) PA-48542 3Remove and discard the inner and outer o-rings from the piston