1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 197Get this manual
DisassemblyAssembly f31 1Start by removing all the parts from the housingInspect the housing for cracks or melting, and install new top plate The top plate locks into place in the housing with square index tabf41 2The liner now slides in and mates with the plate at the point where the liner is split3Place the water tube grommet in the impeller housingr&1 4Apply thin bead of OMC Adhesive sealant to groove of the impeller housing grommetPlace the grommet in position on the impeller housing [] _
Lightly coat the liner with oilWith counterclockwise rotation, install the impeller into the liner with slot for impeller cam facing outRun thin bead of OMC Adhesive sealant in the seal groove, and install the specially shaped O-ring seal
Installation 1Apply OMC Gasket Sealing Compound to both sides of new impeller plate gasketPosition the gasket and impeller plate on the gearcaseDo not use the impeller plate gasket on Jet modelApply OMC Gasket Sealing Compound to the impeller plate before installing