2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 323Get this manual
TRANSMISSION 3Install the snorkel shaft into the gearcaseUsing the Snorkel Tool (PA-50231), tighten the snorkel tube about 10 full rotationsDo not completely tighten the snorkel tube6Install the torx screws (A) that secure the output gear assemblyTorque the screws to specification
PA-50231 4Inspect the output gear assembly and replace bearings if neededInspect each gear for damage, chips or abnormal worn teeth
Output Gear Retaining Screws: 8-12 ftlbs(11-16 Nm) 7Tighten the snorkel tube until it is lightly seated using the snorkel tool (PA-50231)Turn the output shaft to prevent binding while tightening the snorkel tubeMake sure the snorkel shaft gear and output bevel gear have zero' lashNOTE: It is important to have zero lash between the output gear and the snorkel shaft gearIf there is binding or excess lash, tighten or loosen the snorkel shaft until there is zero lashIMPORTANT: Do not overtighten the snorkel tubeGears should rotate freely without binding