2006 Honda TRX680 Rincon Factory Service Manual, Page 475Get this manual
FRONT DRIVING MECHANISM Coat new O-ring with molybdenum disulfide grease and install it into the groove in the output shaftApply molybdenum disulfide grease to the output shaft splinesApply molybdenum disulfide grease to the propeller shaft joint splinesMove the differential forward for maximum clearance between the propeller shaft joint and output shaftInstall the propeller shaft joint over the output shaftOUTPUT SHAFT Align the bolt holes in the differential and frame, and install the 10 mm mounting boltConnect the breather hoseBREATHER HOSE 'PROPELLER SHAFT JOINT
Install the spacer, 10 mm mounting bolt and nutInstall the mounting bracket, mm bolts, mm mounting bolt and nutTighten the all mounting fastenersTORQUE: 10 mm: 44 N-m (4.5 kgf-m, 33 Ibfft) mm: 22 N-m (2.2 kgf-m, 16 Ibfft)