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Yamaha Outboard 4- STROKE F115B HI-POWER

  • Yamaha Outboard 4- STROKE F115B  HI-POWER
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Product Description

The F115's powerhead is all-new with increased bore and stroke, now measuring a full 1.8 litres. At the same time, this double- overhead cam (DOHC) four-cylinder design gets larger intake and exhaust valves for easier breathing, more power and better midrange torque. Complementing the new valves and cylinder head is a new 60-mm single throttle body with Yamaha's long intake track system, and a new free-flow exhaust manifold. Compression ratio is increased, and so is the full-throttle rpm range: 5,300 to 6,300. A knock sensor, an unexpected feature in this class of outboard, allows the engine to operate constantly at peak output. The result is terrific acceleration and a zero-to-200-foot time that's 0.7 sec. faster than that of the F115A.

Specification :
Engine Type : In-Line Four-Cylinder
Displacement : 1832cc (111.8ci)
Bore & Stroke : 81 x 88.9mm (3.19 x 3.5in)
RPM Range : 5,300-6,300
Compression Ratio : 10:1
Induction System : EFI (DOHC)
Alternator Output : 35 Amps
Fuel Delivery : Multi-point electronic fuel injection
Starting : Electric w/PTT
Ignition : TCI Microcomputer
Lubrication : Wet sump
Degree of Trim/Tilt : -4° through +16°
Exhaust : Through Propeller
Cooling : Thermostatic Control
Gear Shift : F/N/R
Gear Ratio : 28:13 (2.15:1)

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