Installation Requirements; Boat Horsepower Rating; Mounting Motor - Yamaha E25B Owner's Manual

Specifications and requirements
30HW Manual starter and Electric
starter
E25BMH Manual starter
Starting carburetion system:
Choke valve
Min. cold cranking amps (CCA/EN):
30HW 347.0 A
Min. rated capacity (20HR/IEC):
30HW 40.0 Ah
Alternator output:
25BMH 80 W
25XMH 80 W
30HMH 80 W
E25BMH 80 W
Maximum generator output:
30HW 6 A
Drive unit:
Gear positions:
Forward-neutral-reverse
Gear ratio:
2.08 (27/13)
Trim and tilt system:
Manual tilt
Propeller mark:
F
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Fuel tank capacity:
24 L (6.34 US gal, 5.28 Imp.gal)
Recommended engine oil:
YAMALUBE 2-stroke outboard motor
oil
Recommended engine oil:
TC-W3
Fuel:oil ratio:
Regular gasoline:
25BMH 100 :1
25XMH 100 :1
30HMH 100 :1
30HW 100 :1
10
E25BMH 50 :1
Lubrication:
Pre-mixed fuel and oil
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
0.320 L (0.338 US qt, 0.282 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):
30HMH 82.7 dB(A)
E25BMH 82.7 dB(A)
Vibration on tiller handle (ICOMIA 38/94):
30HMH Vibration on tiller handle is
under 2.5 m/s
E25BMH Vibration on tiller handle is
under 2.5 m/s
EMU33554

Installation requirements

EMU33564

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 out-
board motor(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-
●
tor could result in hazardous condi-
2
2