Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 109Get this manual
4Install water pickup tube seal (a)lubricate 1.0of seal with 2-4-C Marine lubricant 6Insta ll water pickup tube (a) into seal as shown
7lubricate drive pin (a) with 2-4-C Marine lubricant and place into flat of shaft as shown In stall water pump impe ller (b) over drive pin
5Install water tube seal (a) into base so rubber tabs (b) insert into holes (c) lubricate 1.0of seal with 2-4-C Marine lubrica nt