Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 70Get this manual
Cylinder Block Protect oil seal housing with rag when supporting in
3In stall cy linde block locating pins (a) in cy lin der block (b) and cran kcase cover (e)
vise1Support oil seal housing in vise and in stall new oil sea (a), using dri ver rod (b) and mandrel (e),