Honda Marine BF135A Owner's Manual page 60

OPERATION
MANUAL RELIEF VALVE
POWER
(To fix)
The outboard motor can also be tilted
manually after opening the manual
relief valve. This feature enables the
outboard motor to be tilted up or
down when no battery is connected.
For manual tilting, use a screwdriver
to turn the valve counterclockwise 1
or 2 turns. Close the valve firmly
after positioning the engine.
58
Be sure the valve is closed before
operating the outboard motor. If the
valve is not closed, the outboard
motor will tilt up when operated in
reverse.
Check that nobody is under the
outboard motor before opening the
manual relief valve. If the manual
relief valve is loosened (turned
MANUAL
(To release)
counterclockwise) when the outboard
motor is tilted up, the outboard motor
will suddenly tilt down.