Honda BF90D User Manual

36
CONTROLS AND FEATURES (T type)
Manual Relief Valve
If the power trim/tilt switch will not
tilt the outboard motor, the outboard
motor can be manually tilted up or
down by opening the manual relief
valve. To tilt the outboard motor
manually, turn the manual relief valve
under the left stern bracket no more
than 1 or 2 turns counterclockwise
using a screwdriver.
After tilting the outboard motor, turn
the manual relief valve clockwise
securely.
Check that no person is under the
outboard motor before carrying out
this operation because if the manual
relief valve is loosened (turned
counterclockwise) when the 
outboard motor is tilted up, the
outboard motor will suddenly tilt
down.
The manual relief valve must be
tightened securely before operating
the outboard motor or the outboard
motor could tilt up when operating in
reverse.
MANUAL RELIEF VALVE
POWER
(To fix)
MANUAL
(To release)
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Honda BF90D Specifications

General

Bore & Stroke	73 mm x 89.4 mm
Horsepower	90 HP
Cooling System	Water Cooled
Starting System	Electric
Gear Ratio	2.33:1
Trim Range	-4° to +16°
Tilt Range	70°
Dry Weight	163 kg (359 lbs)
Lubrication	Wet Sump
Recommended Fuel	Unleaded Gasoline (86 Octane or higher)
Gear Shift	F-N-R
Steering	Remote
Trim Method	Power Trim and Tilt
Displacement	1496 cc
Exhaust	Through propeller
Alternator Output	44 Amps
Recommended Engine Oil	10W-30 FC-W
Shaft Length	20" or 25"
Engine Type	4-Stroke SOHC, 4 Cylinders
Fuel Delivery	Programmed Fuel Injection