Power Unit - Yamaha F25 Service Manual

Item
Maximum output
at 5500 r/min
Full throttle operating range
Maximum fuel consumption
at 5500 r/min
Engine idle speed

Power unit

Item
Type
Cylinder quantity
Total displacement
Bore × stroke
Compression ratio
Control system
Starting system
Fuel system
Ignition control system
Advance type
Maximum generator output
Starting enrichment
Spark plug
Firing order
Cooling system
Exhaust system
Lubrication system
Item
Type
Cylinder quantity
Total displacement
Bore × stroke
Compression ratio
Control system
Starting system
Fuel system
Ignition control system
Advance type
Maximum generator output
Starting enrichment
Spark plug
Firing order
Cooling system
Unit
F25EA
kW (HP)
r/min
L (US gal,
Imp gal)/hr
r/min
Unit
F25MHA
3
cm (cu. in)
mm (in)
Manual
V, A
Unit
F25EA
3
cm (cu. in)
mm (in)
V, A
Model
F25A
19.3 (25)
5000–6000
9.2 (2.4, 2.0)
925–1025
Model
F25EHA
4-stroke L
2
498.0 (30.4)
65.0 × 75.0 (2.56 × 2.95)
9.40 : 1
Tiller handle
Electronic
Carburetor
CDI
Micro computer
12.0, 13.0
Prime Start
DPR6EB-9 (NGK)
1–2
Water
Propeller boss
Wet sump
Model
F25A
4-stroke L
2
498.0 (30.4)
65.0 × 75.0 (2.56 × 2.95)
9.40 : 1
Remote control
Electric
Carburetor
CDI
Micro computer
12.0, 13.0
Prime Start
DPR6EB-9 (NGK)
1–2
Water
Model data
T25A
1
T25A
1-4