2009-2012 Honda MUV700 Big Red Service Manual, Page 487Get this manual
FRONT DRIVING MECHANISM FINAL GEAR CASE ASSEMBLY NOTE:
When the gear set, bearing, differential andor gear case has been replaced, check the tooth contact pattern (page 19-30) and check the gear backlash (page 19-28 )Keep dust and din our of the case and cover
Clean the mating surface of the gear case and cover, being careful not to damage them Blow compressed air through the breather hole in the case cover