Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 163Get this manual
4If plunger (white portion) can be compressed into accumulator by hand, accumulator is defectiveReplace accumulator Shock Rod Removal
1Remove cylinder end cap assembly from cylinder using spanner wrench [14 inx 516 in(6.4mm Bmm) long pegs]