Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 183Get this manual
Tilting Outboard "Down" Manually Outboard cannot be tilted down manuallyTilt-down of outboard must be accomplished by depressing "Down" button to operate hydraulic pump motorNOTE: In an emergency only, outboard can be lowered from "up" positionEngagetilt lock lever, and with pan under fitting, loosen "Up" trim hose (smaller diameter hose) fitting at Power Trim pump or at either trim cylinderDisengage tilt lock lever and lower outboard to "down" positionOil will flow from fitting as outboard is loweredRetighten hose fitting
Trim Angle Adjustments
Trim "In" Angle Adjustment
Trim "In" angle is adjusted by repositioning the tilt pin