2001 Mercury Mariner 50-60HP Factory Service Manual, Page 356Get this manual
POWER TRIM
Trim Limit Assembly Installation
1Lubricate all O-ringsInstall spring, poppet, spool housing and trim limit spool into manifold
NOTE: There are three different size springs used in this manifoldThe heavy spring is used on 75-125 hp outboardsThe medium spring is used on 40-60 hp Bigfoot outboardsThe light spring is used on 30-60 hp outboards