Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 166Get this manual
12Place end cap on clean work surface13Remove rod wiper, inner O-ringand outer O-ring NOTE: Tilt System Design" does not use check ball components as in Design I2Slowly separate valve block from cylinderNote position of check ball assembly (Design System) and remove
51147Check Ball Assembly