Johnson Evinrude Outboard Motors 1956-1970 1.5-40hp repair manual., Page 53Get this manual
BOTTOM seal with OMC Seal CompoundUse the special tool to tap the seal EVENLY into place around the crankshaftIf the power head has been disassembled, socket or other similar type tool of equal diameter as the seal may be used to tap it into the bearingIf the powerhead being serviced does not have the seal in the bearing, lay the seal in the recess of the blockWhen the crankcase cover is installed, the seal will be in place3-9 BOTTOM SEAL
is installed through the dr iveshaft and holds the seal upward and in placeAs the powerhead is lowered down over the driveshaft during installation, the seal is held in place and will hold the vacuum and pressure created when the engine is operatingRemoval
The bottom seal has equal importance as the top sealThis seal is installed to maintain vacuum and pressure in the lower half of the crankcase for the lower cylinderThe bottom seal will vary, depending on the model engine being servicedThe following procedures and accompanying illustrations cover the most common JohnsonEvinrude bottom seal installedSeal Mounted on the Driveshaft