Installation Requirements; Boat Horsepower Rating; Mounting Motor - Yamaha F25A Owner's Manual

(2.01 US qt, 1.67 Imp.qt)
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
F25AEHT 0.320 L
(0.338 US qt, 0.282 Imp.qt)
F25AET 0.320 L
(0.338 US qt, 0.282 Imp.qt)
F25AMH 0.320 L
(0.338 US qt, 0.282 Imp.qt)
F25CMH 0.320 L
(0.338 US qt, 0.282 Imp.qt)
FT25BET 0.430 L
(0.455 US qt, 0.378 Imp.qt)
Tightening torque for engine:
Spark plug:
18.0 Nm (1.84 kgf-m, 13.3 ft-lb)
Propeller nut:
F25AEHT 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
F25AET 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
F25AMH 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
F25CMH 35.0 Nm
(3.57 kgf-m, 25.8 ft-lb)
FT25BET 40.0 Nm
(4.08 kgf-m, 29.5 ft-lb)
Engine oil drain bolt:
F25AEHT 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
F25AET 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
F25AMH 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
F25CMH 28.0 Nm
(2.86 kgf-m, 20.7 ft-lb)
FT25BET 18.0 Nm
(1.84 kgf-m, 13.3 ft-lb)
Engine oil filter:
18.0 Nm (1.84 kgf-m, 13.3 ft-lb)
Specifications and requirements
Noise and vibration level:
EMU33553
EMU33563

Boat horsepower rating

EWM01560
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
●
●
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.
Operator sound pressure level
(ICOMIA 39/94 and 40/94):
F25CMH 81.9 dB(A)
Vibration on tiller handle (ICOMIA 38/94):
F25CMH Vibration on tiller handle is
under 2.5 m/s

Installation requirements

WARNING
WARNING
Improper mounting of the outboard mo-
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.
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