Yamaha 2 Stroke Outboard Engines
Yamaha 2 Stroke Outboards, Introduction and Specifications
4C
Yamaha's 4C two stroke built lightweight and compact has been designed so you can take it absolutely anywhere. The convenience of a built in fuel tank makes fitting the engine a breeze.
Performance:
Max. prop shaft output 2.9 kW (4 ps)
Full throttle operating range 4500 - 5500 r/min
Idling speed 1100 - 1200 r/min
Max fuel consumption 2.8 L/h @5500 r/min
Engine:
Engine type 1-cylinder
Displacement 103 cm3
Bore X stroke 54.0× 45.0 mm
Compression ration 6.5 :1
Starting enrichment Manual choke
Fuel induction system 1 carburetor
Alternator 60 W (optional)
Bracket /Drive:
Gear ratio 2.08 (27/13)
Propeller rotation Clockwise
Shaft length S, L (4D: S)
15F
Yamaha's two stroke 15F with a reputation built on years of reliable and powerful performance, is a standout engine in the Yamaha line up.
Performance:
Max. prop shaft output 11.0 kW (15 ps)
Full throttle operating range 4500 - 5500 r/min
Idling speed 700 - 800 r/min
Max fuel consumption 7.3 L/h @5500 r/min
Engine:
Engine type In-line 2
Displacement 246 cm3
Bore X stroke 56.0× 50.0 mm
Compression ration 6.8 :1
Starting enrichment Manual choke
Fuel induction system 1 carburetor
Alternator 80 W (EUR, RUS: 6 A)
Bracket /Drive:
Gear ratio 2.08 (27/13)
Propeller rotation Clockwise
Shaft length S, L
Engine transom height S : 440 mm (17.3 in), L : 567 mm (22.3 in)
25B
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)
30H
Yamaha's 30H delivers plenty of power while still offering the features and engineering excellence that comes from over 50 years of Yamaha outboard research. Built around a proven two cylinder two stroke design.
Performance:
Max. prop shaft output 22.1 kW (30 ps)
Full throttle operating range 4500 - 5500 r/min
Idling speed 1050 - 1150 r/min
Max fuel consumption 12.0 L/h @5500 r/min
Engine:
Engine type In-line 2
Displacement 496 cm3
Bore X stroke 72.0× 61.0 mm
Compression ration 7.0 :1
Starting enrichment Manual choke
Fuel induction system 1 carburetor
Alternator 80 W (W, WH: 6 A)
Bracket /Drive:
Gear ratio 2.08 (27/13)
Propeller rotation Clockwise
Shaft length MH: S, L / W, WH: L
Engine transom height S : 423 mm (16.7 in), L : 550 mm (21.7 in), X : 636 mm (25.0 in)
40X
The Yamaha 40X two stroke outboards are lightweight and compact yet deliver high power output. The engine structure is relatively simple and maintenance is exceedingly easy.
Performance:
Max. prop shaft output 29.4 kW (40 ps)
Full throttle operating range 4500 - 5500 r/min
Idling speed 950 - 1050 r/min
Max fuel consumption 20.0 L/h @5500 r/min
Engine:
Engine type In-line 2
Displacement 703 cm3
Bore X stroke 80.0× 70.0 mm
Compression ration 6.0 :1
Starting enrichment Manual choke
Fuel induction system 1 carburetor
Alternator MH: 80 W (optional) W, WT: 6 A
Bracket /Drive:
Gear ratio 2.00 (26/13)
Propeller rotation Clockwise
Shaft length MH, W: S, L / WT: L
Engine transom height S: 424 mm (16.7 in), L: 550 mm (21.7 in)
50H
The Yamaha 50H proven design, unmatched versatility, unbeatable value with an outstanding power to weight ratio plus world renowned reliability.
Performance:
Max. prop shaft output 36.8 kW (50 ps)
Full throttle operating range 4500 - 5500 r/min
Idling speed 750 - 850 r/min
Max fuel consumption 22.0 L/h @5500 r/min
Engine:
Engine type In-line 3
Displacement 698 cm3
Bore X stroke 67.0× 66.0 mm
Compression ration 6.0 :1
Starting enrichment MHO, MHD: Manual choke
WHTO, ETO: Prime start
Fuel induction system 3 carburetors
Alternator ETO, WHTO: 6 A
Raw-water, thermostatically controlled
Bracket /Drive:
Gear ratio 1.85 (24/13)
Propeller rotation Clockwise
Shaft length MHO: S
Engine transom height MHD, WHTO, ETO: L S : 406 mm (16.0 in), L : 533 mm (21.0 in)
60F
The 60F two stroke outboards are lightweight and compact yet deliver high power output. The engine structure is relatively simple and maintenance is exceedingly easy.
Performance:
Max. prop shaft output 51.5 kW (60 ps)
Full throttle operating range 5000 - 6000 r/min
Idling speed 750 - 850 r/min
Max fuel consumption 23.0 L/h @5500 r/min
Engine:
Engine type In-line 3
Displacement 849 cm3
Bore X stroke 72.0× 69.5 mm
Compression ration 6.1 :1
Starting enrichment Prime start
Fuel induction system 3 carburetors
Alternator 6 A
Bracket /Drive:
Gear ratio 2.33 (28/12)
Propeller rotation Clockwise
Shaft length L
Engine transom height L : 521 mm (20.5 in)
70B
The 70B two stroke outboards are lightweight and compact yet deliver high power output. The engine structure is relatively simple and maintenance is exceedingly easy.
Performance:
Max. prop shaft output 51.5 kW (70 ps)
Full throttle operating range 5000 - 6000 r/min
Idling speed 750 - 850 r/min
Max fuel consumption 26.0 L/h @5500 r/min
Engine:
Engine type In-line 3
Displacement 849 cm3
Bore X stroke 72.0× 69.5 mm
Compression ration 6.1 :1
Starting enrichment Prime start
Fuel induction system 3 carburetors
Alternator 6 A
Bracket /Drive:
Gear ratio 2.33 (28/12)
Propeller rotation Clockwise
Shaft length L
Engine transom height L : 521 mm (20.5 in)
85A
The 85A two stroke outboards are lightweight and compact yet deliver high power output. The engine structure is relatively simple and maintenance is exceedingly easy.
Performance:
Max. prop shaft output 62.5 kW (85 ps)
Full throttle operating range 4500 - 5500 r/min
Idling speed 750 - 850 r/min
Max fuel consumption 35.0 L/h @5500 r/min
Engine:
Engine type In-line 3
Displacement 1140 cm3
Bore X stroke 82.0× 72.0 mm
Compression ration 5.1 :1
Starting enrichment Manual choke
Fuel induction system 3 carburetors
Alternator 10 A
Bracket /Drive:
Gear ratio 2.00 (26/13)
Propeller rotation Clockwise
Shaft length ET, ED: L, X / EHD: L, Y
Engine transom height L: 521 mm (20.5 in), Y: 572 mm (22.5 in), X: 647 mm (25.5 in)
200A
The 200A two stroke outboards are lightweight and compact yet deliver high power output. The engine structure is relatively simple and maintenance is exceedingly easy.
Performance:
Max. prop shaft output 110.3 kW (200 ps)
Full throttle operating range 4500 - 5500 r/min
Idling speed 675 - 725 r/min
Max fuel consumption 72.0 L/h @5500 r/min
Engine:
Engine type 90 deg. V6
Displacement 2596 cm3
Bore X stroke 90.0× 68.0 mm
Compression ration 5.9 :1
Starting enrichment Manual choke
Fuel induction system 3 dual throat carburetors
Alternator 14 A
Bracket /Drive:
Gear ratio 1.86 (26/14)
Propeller rotation Counter clockwise Clockwise
Shaft length L, X
Engine transom height L: 516 mm (20.3 in), X: 642 mm (25.3 in)