Re: water pump rebuild 65hp 4cyl
Stump hanger- Most often all you need to replace is the impeller and gasket for the upper WP housing. Sierra will have these parts at your NAPA store or go to a merc dealer. The whole kit (Well they used to anyway) includes a new SS impeller cup, plate, impeller, gaskets and new impeller key. They are very expensive and there is generally no need for all that. Unless your cup and plate are severly damaged, just throw a new impeller in there. Grease up the cup before assembly and as for the gasket, if you go EASY with the silicone you can use it. (Remember, you're sealing water from water with that gasket). Remember to reinstall the slinger at the top of your pump housing. Check or replace (at a minimum grease up) your drive shaft O ring at the top of the DS before reassembly.
