Honda BF90D - Manual Relief Valve

The manual relief valve must be
tightened securely before
operating the motor or the
motor could tilt when operating
in reverse.
99
OPERATION
Manual Relief Valve
Do not loosen the manual relief
valve more than two turns, or the
outboard motor cannot be tilted up
when the manual relief valve is
retightened.
MANUAL RELIEF VALVE
M
M
A
A
N
N
U
U
A
A
L
L
(
(
T
T
o
o
r
r
e
e
l
l
e
e
a
a
s
s
e
e
)
)
P
P
O
O
W
W
E
E
R
R
(
(
T
T
o
o
f
f
i
i
x
x
)
)
When power trim/tilt system does not
operate because of dead battery or
faulty power trim/tilt motor, the
outboard motor can be manually
tilted up or down by operating the
manual relief valve.
To tilt the outboard motor manually,
turn the manual relief valve under the
stern bracket 1 or 2 turns
counterclockwise using a screwdriver.
After tilting up/down manually, close
the manual relief valve to lock the
motor in the position.
Check that no person is under the
outboard motor before carrying out
this operation because if the manual
relie f val ve is loosened (turned
counterclockwise) when the outboard
motor is tilted up, the outboard motor
will suddenly tilt down.