Mercury 40 Service Manual page 383

Manual Tilt
To manually tilt the outboard engine, the owner will need to back out the manual release
valve (p) 3-4 turns. With the valve backed out, the internal passages inside the manifold are
connected together. These passages connect both the cylinder down and up cavities to-
gether, along with the reservoir, allowing the engine to be raised or lowered. Trim rod (a)
movement will continue until the manual release valve (p) is closed, locking the fluid inside
of the cylinder and manifold.
a -
b -
c -
d -
e -
g -
h -
k -
m -
n -
o -
p -
q -
s -
u -
v -
w -
90-828631R3 MARCH 1999
Trim Rod
End Cap
Electric Motor
Reservoir Oil
Down Circuit Pressure Relief Valve
f - Down Circuit Pressure Operated Valve
Filter (2 shown for clarity)
Shock Return Valve
i - Up Circuit Suction Port
j - Oil Pump Gears
Down Circuit Suction Port
l - Oil Fill Cap
Shuttle Valve
Up Circuit Pressure Operated Valve
Manifold Reverse Suction Valve
Manual Release Valve
Manifold
r - Tilt Relief Valve
Tilt Relief Piston
t - Memory Piston
Shock Piston
Impact Relief Valve
Cylinder
POWER TRIM
Page 5C-21