Yamaha F25A, Service Manual

Page: 36 / 444

2-1
SPEC
E
GENERAL SPECIFICATIONS
GENERAL SPECIFICATIONS
Item Unit
Model
Worldwide
F20AMH F20AEH F20AE F20AET F25AMH F25AEH F25AEHT F25AE F25AET
USA, CANADA
— — — — F25MH F25EH F25TH F25ER F25TR
DIMENSION
Overall length mm (in) 1,151
(45.3)
1,102
(43.4)
703 (27.7) 1,151
(45.3)
1,102
(43.4)
703 (27.7)
Overall width mm (in) 430
(16.9)
429
(16.9)
376 (14.8) 430
(16.9)
429 (16.9) 376 (14.8)
Overall height
(S) mm (in) 1,148 (45.2) — 1,148
(45.2)
— 1,148
(45.2)
—
(L) mm (in) 1,275 (50.2)
(X) mm (in) — 1,354
(53.3)
—
WEIGHT
(With aluminum
propeller)
(S) kg (lb) 62
(136.7)
66
(145.5)
65
(143.3)
— 62
(136.7)
66
(145.5)
— 65
(143.3)
—
(L) kg (lb) 64
(141.1)
68
(149.9)
67
(147.7)
71
(156.5)
64
(141.1)
68
(149.9)
72
(158.7)
67
(147.7)
71
(156.5)
(X) kg (lb) — 66
(145.5)
—
PERFORMANCE
Maximum output (ISO) kW (hp)
@ 5,500 r/min
14.7 (20) 18.4 (25)
Full throttle operating
range r/min 5,000 ~ 6,000
Maximum fuel
consumption L (US gal,
Imp gal)/ h
@ 6,000 r/min
9.2 (2.43, 2.02)
POWER UNIT
Type 4 stroke, OHC, in-line
Number of cylinders 2
Displacement cm
3
(cu. in)
498 (30.4)
Bore
×
stroke mm (in) 65.0
×
75.0 (2.56
×
2.95)
Compression ratio 9.87
Compression pressure kPa (kg/
cm
2
, psi)
1,180 ~ 1,250 (12.0 ~ 12.7, 170 ~ 190)
Number of carburetors 1
Control system Tiller Remote Tiller Remote
Starting system Manual Electric Manual Electric
Ignition control system Microcomputer
Lighting coil output V-A 12-6
(option)
12-15 12-6
(option)
12-15
Starting enrichment Primestart
Spark plug DPR6EA-9
Exhaust system Propeller hub