Yamaha 4 Stroke Midrange Outboard Engines
Yamaha 4 Stroke Midrange Outboards, Introduction and Specifications
F70A
The F70 is a unique four-cylinder, 16-valve design activated by a single overhead camshaft. The 4-valves per cylinder valvetrain has dramatically increased this outboard’s volumetric efficiency.
Specifications:
Performance:
Max. prop shaft output 51.5 kW (70ps)
Full throttle operating
range
5300 - 6300 r/min
Idling speed 700 - 800 r/min
Max fuel consumption 21.2 L/h @ 5800 r/min
Engine:
Engine type 16 - Valve, DOHC, In-line 4
Displacement 996 cm3
Bore X stroke 65.0 x 75.0 mm
Compression ration 9.4:1
Starting enrichment Fuel injection
Fuel induction system Fuel injection
Alternator 15 A (battery charging: 9A)
Bracket /Drive:
Gear ratio 2.33 (28/12)
Propeller rotation Clockwise
Shaft length L, X
Engine transom height L: 534 mm (21.0 inch), X: 648 mm (25.5 inch)
FT60G
The F60 is a silky-smooth, 996cc, four-cylinder marine engine, that delivers an excellent power-to-weight ratio and exceptional refinement and fuel-efficiency.
Specifications:
Performance:
Max. prop shaft output 44.1 kW (60ps)
Full throttle operating
range
5000 - 6000 r/min
Idling speed 700 - 800 r/min
Max fuel consumption 19.2 L/h @ 5500 r/min
Engine:
Engine type SOHC, In-line 4
Displacement 996 cm3
Bore X stroke 65.0 x 75.0 mm
Compression ration 9.5:1
Starting enrichment Fuel injection
Fuel induction system Fuel injection
Alternator 16 A (battery charging: 9A)
Bracket /Drive:
Gear ratio 2.33 (28/12)
Propeller rotation Clockwise
Shaft length L
Engine transom height L: 530 mm (20.9 inch), X: 644 mm (25.4 inch)
FT50J
Utilising Yamaha’s exclusive Multi-Point Fuel Injection System (EFI) and Electronic Control Module (ECM).
Specifications:
Performance:
Max. prop shaft output 36.8 kW (60ps)
Full throttle operating
range
5000 - 6000 r/min
Idling speed 700 - 800 r/min
Max fuel consumption 18.5 L/h @ 5500 r/min
Engine:
Engine type SOHC, In-line 4
Displacement 996 cm3
Bore X stroke 65.0 x 75.0 mm
Compression ration 9.5:1
Starting enrichment Fuel injection
Fuel induction system Fuel injection
Alternator 16 A (battery charging: 9A)
Bracket /Drive:
Gear ratio 2.33 (28/12)
Propeller rotation Clockwise
Shaft length L
Engine transom height L: 530 mm (20.9 inch), X: 644 mm (25.4 inch)