1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 195Get this manual
Cleaning and Inspection i cause loss of control over direction of engine thrust"" Replace damaged componentsShift system failure could
1Discard all seals, O-rings, gaskets, and clutch dog spring
ill compressed airTo avoid personal injury, wear eye protection and regulate air pressure to not more than 25 PSI (172 kPa)After cleaning, coat all internal components with OMC Hi- Vis gearcase lube to prevent rusting3Perform the following inspections: Gearcase housingall gasket surfaces must be free of gasket materialAll threaded holes must be free of corrosion and sealerUpper driveshaft oil circulation hole must be clear Hydrostatic seal ringsmust be undamaged and in good condition to help prevent propeller ventilation Gearcase anodesif anodes have been reduced to twothirds their original size, they must be replacedRefer to Section for testing procedure Driveshaftcheck threads and splines for chips, wear, and cracksBearing and gear surfaces must not show signs of metal transfer, corrosion, or discolorationSevere spline wear might indicate an exhaust housing or gearcase has been distorted by impact damage Water intake screenmust be clear If screen can't be cleaned, it must be replaced All internal componentsmust be visually inspected for signs of wear, distortion, chipping, metal transfer, pitting, galling, and discoloration due to improper lubrication Water pumpcheck impeller for wear, crumbling, and hub bondingCheck liner and wear plate for scoring and distortion