2006 Honda TRX680 Rincon Factory Service Manual, Page 494Get this manual
REAR DRIVING MECHANISM GEAR TOOTH CONTACT PATTERN CHECK Keep dust and dirt Clean the mating surfaces of the gear case and
out of the case and covercover
RING GEAR Apply Prussian Blue
thin coat of Prussian Blue to the pinion gear teeth for tooth contact pattern checkInstall the ring gear shims onto the ring gear
Install the ring gear with the shims into the gear case
LEFT SHIM Align the bolt holes and install the case coverIt is important to turn the pinion while tightening the boltsIf the ring gear shims is too thick, the gears will lock after only light tightening
10 mm BOLTS
Install the cover bolts and tighten them in several steps until the cover evenly touches the gear caseThen, while rotating the pinion gear, tighten the bolts to the specified torque in crisscross pattern in several stepsTORQUE: 10 mm bolt: 49 (5.0 kgf m, 36 Ibfft) mm bolt: 25 (2.6 kgf m, 19 Ibfft)