Yamaha EK25BMH Service Manual - General Specifications
GENERAL SPECIFICATIONS
2-1
E
SPEC
2
GENERAL SPECIFICATIONS
Item
Unit
Model
Worldwide
EK25BMH
DIMENSIONS
Overall length
mm (in)
843 (33.2)
Overall width
mm (in)
399 (15.7)
Overall height
(S)
mm (in)
1,146 (45.1)
(L)
mm (in)
1,273 (50.1)
(Y)
mm (in)
1,320 (52.0)
Boat transom height
(S)
mm (in)
381 (15.0)
(L)
mm (in)
508 (20.0)
(Y)
mm (in)
559 (22.0)
WEIGHT
(S)
kg (lb)
53.0 (116.9)
(L)
kg (lb)
54.5 (120.2)
(Y)
kg (lb)
55.0 (121.3)
PERFORMANCE
Maximum output (ISO)
kW (hp)
@5,000 r/min
18.4 (25.0)
Full throttle operating range
r/min
4,500 - 5,500
Maximum fuel consumption
L (US gal,
Imp gal)
@5,500 r/min
13.8 (3.6, 3.0)
Gasoline / Kerosene
POWER UNIT
Type
2 stroke
Number of cylinders
2
Displacement
cm
3
(cu. in)
496 (30.3)
Bore and stroke
mm (in)
72.0
×
61.0 (2.83
×
2.40)
Compression ratio
kPa
(kgf/cm
2
, psi)
#1: 5.3 (0.05, 0.8), #2: 5.7 (0.06, 0.8)
Compression pressure
kPa
(kgf/cm
2
, psi)
#1: 680 (6.8, 98.6), #2: 730 (7.3, 105.9)
kPa
(kgf/cm
2
, psi)
#1: 540 (5.4, 78.3), #2: 580 (5.8, 84.1)
Spark plug(NGK)
B7HS-10
Number of carburetor
1
Enrichment system
Chock valve
Intake system
Reed valve
Induction system
Loop charge
Exhaust system
Through propeller boss