Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 245Get this manual
Reassembly IMPORTANT: Components must be dirt and lint freeSlightest amount of debris in Power Trim system could cause system to malfunction
3Install flat ring (a) (if equipped) into groove in each end cap
1Install O-rings and flat ring(s) Apply Quicksilver Power TrimSteering Fluid or; Automotive Transmission Fluid (ATF) Type F, FA or Dexron II on lip of seal