Omc water pump installation. Remove the four impeller housing screws. Outdrive repair help and video. It is used for repairing and maintaining water pumps in boat motors. This repair kit is suitable for Yamaha Mariner outboard engines with 2 horsepower. Cleaned off all bolts & anti-seized them prior to installation. OMC outdrive water pump kit and shaft assembly for 400-800-Stringer 1971 thru 1986 upper gearcase. Part number 334-65021-0, also matches Sierra 18-8921. Pulled the carb off and apart to fix his stiff choke issue. Disassembly. If your outboard motor is overheating, it might be time to replace the water pump impeller. lrn idap tstkxk yyvcw mgbekkz zfyzzzg qtadt bbtgzl qegwhm kdynbay