1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 241Get this manual
MANUAL TILT To manually tilt the outboard engine, the owner will need to back out the manual tilt valve (j)With the valve backed out, the internal passages inside the manifold are connected togetherThese passages connect both the cylinder down and up cavities together, along with the reservoir (t), allowing the engine to be raised or loweredTrim ram (b) movement will continue until the manual tilt valve is closed, locking the fluid inside of the cylinder and manifold