1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 252Get this manual
3Remove check ball components from shock rod piston4Remove o-ring from shock rod piston CAUTION
When removing shock piston, spanner wrench must have 14 inx 516 inlong pegs to avoid damage to shock piston5Place shock rod into soft jawed vise and apply heat to loosen piston using torch lamp (PN 91-63209)
6Loosen shock rod piston using spanner wrench [14 inx 516 in(6.4mm 8mm) long pegs]7Allow shock rod piston to coolRemove from shock rod51147