YAMAHA MARINE SERVICE MOZAMBIQUE

Yamaha 2 Stroke Outboard Engines


Yamaha 2 Stroke Outboards, Introduction and Specifications

Yamaha Outboard 2 Stroke 4C

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)


Yamaha Outboard 2 Stroke 15F

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)

Yamaha Outboard 2 Stroke 25B

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)

Yamaha Outboard 2 Stroke 30H

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)

Yamaha Outboard 2 Stroke 40X

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)

Yamaha Outboard 2 Stroke 50H

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)

Yamaha Outboard 2 Stroke 60F

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)

Yamaha Outboard 2 Stroke 70B

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)

Yamaha Outboard 2 Stroke 85A

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)

Yamaha Outboard 2 Stroke 200A

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)