Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 379Get this manual
RIGHT HAND NON-RATCHETING
CLEANING AND INSPECTION
CAUTION
DO NOT spin bearings dry with compressed air, as this could cause bearing to score1Clean forward gear and bearings with solvent and dry with compressed air2Inspect gear teeth for pitting, grooves, scoring, uneven wear and for discoloration (from overheating)Replace gear if any of these conditions are found3Check clutch jaws on forward gear for damageReplace forward gear if damage is found4Inspect tapered bearing race for pitting, grooves, scoring, uneven wear and discoloration (from overheating)Replace tapered bearing (on forward gear) and race if any of these conditions are found(Always replace tapered bearing and race as set 5To determine condition of propeller shaft needle bearings (in forward gear), inspect propeller shaft forward gear needle bearing surface as outlined in "Propeller Shaft Inspection
Gear Housing
CLEANING AND INSPECTION