1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 239Get this manual
f151 10If removed, install new inner exhaust housing sealApply OMC Adhesive TM to the seal groove 11Clean and degrease the adapter housing and outer exhaust housing mating surfaces with OMC Cleaning SolventApply OMC Gel-Seal I to the adapter flange of the outer exhaust housingf17l 12Install the adapter housing on the outer exhaust housingAlign the water tubeLoosely install the small retaining screws13Lubricate the upper mount with soapy water and push into place in the adapter housingThe mount radius must face aft and the "TOP" mark must face up
L!!J mount plate screws and install the plate and screws looselyInstall the ground lead and star washer under the forward starboard screwf18l 15Align the outer exhaust housing and adapter by placing two powerhead mounting screws through their holes