Installation Requirements; Boat Horsepower Rating; Mounting Motor; Remote Control Requirements - Yamaha 90A Owner's Manual

Specifications and requirements
oil
Lubrication:
Oil injection
Engine oil tank capacity:
3.3 L (3.49 US qt, 2.90 Imp.qt)
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
0.610 L (0.645 US qt, 0.537 Imp.qt)
Tightening torque for engine:
Spark plug:
25.0 Nm (2.55 kgf-m, 18.4 ft-lb)
Propeller nut:
35.0 Nm (3.57 kgf-m, 25.8 ft-lb)
Noise and vibration level:
Operator sound pressure level
(ICOMIA 39/94 and 40/94):
91.1 dB(A)
Sound power level
(ICOMIA 39/94 and 40/94):
98.9 dB(A)
Vibration on tiller handle (ICOMIA 38/94):
2
2.8 m/s
EMU33553

Installation requirements

EMU33563

Boat horsepower rating

EWM01560
WARNING
Overpowering a boat can cause severe
instability.
Before installing the outboard motor(s), con-
firm that the total horsepower of your mo-
tor(s) does not exceed the boats maximum
horsepower rating. See the boat's capacity
plate or contact the manufacturer.
EMU33571

Mounting motor

EWM01570
WARNING
Improper mounting of the outboard mo-
●
10
tor could result in hazardous condi-
tions such as poor handling, loss of
control, or fire hazards.
Because the motor is very heavy, spe-
●
cial equipment and training is required
to mount it safely.
Your dealer or other person experienced in
proper rigging should mount the motor using
correct equipment and complete rigging in-
structions. For further information, see page
30.
EMU33581

Remote control requirements

EWM01580
WARNING
If the engine starts in gear, the boat can
●
move suddenly and unexpectedly, pos-
sibly causing a collision or throwing
passengers overboard.
If the engine ever starts in gear, the
●
start-in-gear protection device is not
working correctly and you should dis-
continue using the outboard. Contact
your Yamaha dealer.
The remote control unit must be equipped
with a start-in-gear protection device(s). This
device prevents the engine from starting un-
less it is in neutral.
EMU25694

Battery requirements

EMU25721

Battery specifications

Minimum cold cranking amps (CCA/EN):
430.0 A
Minimum rated capacity (20HR/IEC):
70.0 Ah
The engine cannot be started if battery volt-
age is too low.