2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 212Get this manual
GEARCASE SHIMMING ADJUSTMENTS When the housing is fully seated, tighten both retaining screws to 72 inIbs(8 Nm)Check and adjust backlashRefer to SHIMMING ADJUSTMENTS on p213When shimming is correct, remove bearing housing for final installation of seals and o-ringsApply OPL to the outer casing of two new propeller shaft bearing housing oil sealsUse seal installer to press seals (one at time) into the housingThe lipped portion of the seals should face toward the propellerApply Triple-Guard grease to the seal lips
SHIMMING ADJUSTMENTS
If gearcase has been rebuilt or has had components replaced, shimming for correct gear contact and backlash will have to be adjusted to ensure smoothreliable operation of gears