I have a 1986 Sportcraft. It has a 170 h.p. 4 cyl. 2bbl. Sterndrive. I'm told that my bilge pump is not working and it is located underneath the engine. I'm assuming it is manual as there is a switch for it on my dashboard and it is 12v. This is all I know other than it will cost m at least $700 to replace it because supposedly they would have to lift the engine up to get to it. I do have the SELOC MERCRUISER Stern Drives 1964 -91 Manual but I have yet to find out any info. about the Bilge Pump. Any help you can give me would be greatly appreciated. THANK YOU IN ADVANCE. MK