Specifications And Requirements; Specifications - Yamaha 20D Owner's Manual

Specifications and requirements

EMU31480

Specifications

TIP:
"(AL)" stated in the specification data below
represents the numerical value for the alumi-
num propeller installed.
Likewise, "(SUS)" represents the value for
stainless steel propeller installed and "(PL)"
for plastic propeller installed.
EMU2821C
Dimension:
Overall length:
936 mm (36.9 in)
Overall width:
358 mm (14.1 in)
Overall height S:
20DMH 1068 mm (42.0 in)
25NMH 1068 mm (42.0 in)
Overall height L:
1195 mm (47.0 in)
Transom height S:
20DMH 419 mm (16.5 in)
25NMH 419 mm (16.5 in)
Transom height L:
546 mm (21.5 in)
Weight (AL) S:
20DMH 48.0 kg (106 lb)
25NMH 48.0 kg (106 lb)
Weight (AL) L:
20DMH 49.5 kg (109 lb)
25NMH 49.5 kg (109 lb)
25NWC 51.0 kg (112 lb)
Performance:
Full throttle operating range:
5000–6000 r/min
Maximum output:
20DMH 14.7 kW@5500 r/min
(20 HP@5500 r/min)
25NMH 18.4 kW@5500 r/min
(25 HP@5500 r/min)
9
25NWC 18.4 kW@5500 r/min
(25 HP@5500 r/min)
Idling speed (in neutral):
750 ±50 r/min
Engine:
Type:
2-stroke L
Displacement:
3
395.0 cm
Bore × stroke:
67.0 × 56.0 mm (2.64 × 2.20 in)
Ignition system:
CDI
Spark plug with resistor (NGK):
BR7HS-10
Spark plug gap:
0.9–1.0 mm (0.035–0.039 in)
Control system:
20DMH Tiller
25NMH Tiller
25NWC Tiller and Remote control
Starting system:
20DMH Manual
25NMH Manual
25NWC Manual and electric
Starting carburetion system:
Choke valve
Min. cold cranking amps (CCA/EN):
25NWC 347.0 A
Min. rated capacity (20HR/IEC):
25NWC 40.0 Ah
Alternator output:
20DMH 80 W
25NMH 80 W
Maximum generator output:
25NWC 6.0 A
Drive unit:
Gear positions:
Forward-neutral-reverse
Gear ratio:
2.08 (27/13)