Johnson Evinrude Outboard Motors 1956-1970 1.5-40hp repair manual., Page 300Get this manual
LOWER UNIT
Eabbitt bearing unfit for further servicebearing must not show any signs of wear
This type
View of badly corroded lower unitWater entered and was allowed to remain over an extended period of time causing extensive damage
Inspect the impeller side seal surfaces and the ends of the impeller blades for cracks, tears, and wearCheck for glazed or melted appearance, caused from operating without sufficient waterIf any question exists, and as previously stated, install new impeller if at all possibleClean all parts with solvent and dry them with compressed airDISCARD all 0rings and gasketsInspect and replace the driveshaft if the splines are wornInspect the gearcase and exhaust housing for damage 1'0 the machined surfacesRemove any nicks and refurbish the surfaces on surface plateStart with aNo120 Emery paper and finish with No180be