Yamaha 25B superior design and engineering allows these engines to run a 100:1 pre mix oil ratio for crisp response, less smoke and odor, and smooth operation. Performance: Max. prop shaft output 18.4 kW (25 ps) Full throttle operating range 4500 – 5500 r/min Idling speed 1050 – 1150 r/min Max fuel consumption 11.0 L/h @5500 r/min Engine
Description
Yamaha 25B superior design and engineering allows these engines to run a 100:1 pre mix oil ratio for crisp response, less smoke and odor, and smooth operation.
Performance:
Max. prop shaft output 18.4 kW (25 ps)
Full throttle operating range 4500 – 5500 r/min
Idling speed 1050 – 1150 r/min
Max fuel consumption 11.0 L/h @5500 r/min
Engine:
Engine type In-line 2
Displacement 496 cm3
Bore X stroke 72.0× 61.0 mm
Compression ration 6.2 :1
Starting enrichment Manual choke
Fuel induction system 1 carburetor
Alternator 80 W (W: 6 A)
Bracket /Drive:
Gear ratio 2.08 (27/13)
Propeller rotation Clockwise
Shaft length MH: S, L, X / W: L
Engine transom height S : 423 mm (16.7 in), L : 550 mm (21.7 in), X : 636 mm (25.0 in)
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