PRODUCT PROFILE

YAMAHA’S ALL NEW F115B IS COMPACT, POWERFUL AND LIGHTEST OF ALL 115 FOUR STROKESFollowing in the footsteps of the iconic F115A, the next generation F115B is set to rewrite the rulebook by delivering more performance than ever before. Featuring a larger, all-new 1832cc, DOHC in-line 4 cylinder engine, this light-weight power plant has been engineered to be the first choice for boaters in the mid horse power category.

COMPACT AND LIGHT-WEIGHTWeighing in at a category leading 171kg, the next-generation F115B is 15kg lighter than the F115A it supersedes. The superior refinement of the silky-smooth 4 cylinder design and unmatched power-to-weight ratio, translates to unrivalled fuel economy, reliability and performance. Compact and light weight in design, the F115B’s performance and efficiency makes it the ideal choice for boaters looking for the latest technology and innovation to power a new boat or for boaters who are considering repowering.

EFFORTLESS PERFORMANCEThe 1.8 litre, 16 valve DOHC engine utilises the very latest in Yamaha’s efficient multi-point EFI and ECM control, while producing a healthy 115HP @ 5800rpm. Combined with its slim light-weight design, the F115B boasts the best power-to-weight ratio of any outboard in its class.

KEY FEATURES• Weighs only 171kg – best power-to-weight performance in its class

• 16 big-valve engine (1,832cc in-line 4-cylinder format with DOHC)

• Latest-generation styling with new top cowling and sleek design

• Multi-point Electronic Fuel Injection and micro-computer ECM control

• 60mm large-bore throttle body and streamlined intake manifold

• Extremely fuel efficient – lower running costs and reliability

• Service-friendly design with flange-mounted flywheel and oil-catch tray

• Optional Command Link - drives latest 6Y8 Multi-Function Gauges

• Variable Trolling System (VTS) adjusts low speed rpm in 50rpm steps (available with Command Link option)

• Exclusive Y-COP immobiliser/security system - for peace of mind (optional)

• Yamaha’s compact, lightweight Power Trim and Tilt unit

• Tilt Limiting Switch available as an option

• 35 Amp high output alternator – extra power for starting and accessories

• New SDS Series aluminium propeller - with noise and vibration damping

• Counter-rotating propeller model available for twin installations

• Fresh water flushing device – just plug in a hose and wash internally

Y A M A H A F 1 1 5 B F O U R - S T R O K E : 3

ECM

Digital network system (optional)

Receiver

Transmitter

Immobilizer (optional)

SpeedmeterTachometerIgnitionswitch

PROTECTION FROM THE ELEMENTSThe F115B features a new outer cowling design with an intake air drain system, to easily and efficiently drain away any water that enters the cowling during normal engine operation. Incoming air is routed through a labyrinth of passages that help trap and drain water before it enters the engine’s intake, for maximum reliability.

1.8 LITRE EFI, DOHC IN-LINE 4-CYLINDER 16 VALVE ENGINEYamaha is raising the bar with the introduction of the new F115B four-stroke outboard. The new F115B replaces the current F115A, a brilliant engine that is already the leader in its class. The F115B plays host to all the latest combination of innovative, efficient and performance oriented technology. The engine compression ratio has been increased, and so has the full throttle operating range: 5300-6300rpm. The inclusion of an engine knock sensor, which is a which is an uncommon feature in this class of outboard, allows the engine to operate safely and constantly at peak output. Class leading efficiency and performance is achieved throughout the complete rev range via the latest in Yamaha’s efficient multi-point EFI and ECM control and bigger displacement 4-cylinder DOHC (Dual Overhead Camshafts) 4-valve per cylinder design. The multi-point EFI and ECM control delivers the optimum fuel mixture into the combustion chamber, whilst the DOHC, 4-big-valve, 4-cylinder design guarantees precise, efficient and reliable engine operation.

COMMAND LINK (OPTIONAL)All our EFI engines can be linked, via Yamaha’s own digital network system, to a wide range of instruments to help you get the best from your engine. A multi-function tachometer displays RPM, engine hours, trim angle, oil pressure and warning lamps. The combined Speed and Fuel Management gauge shows speed, fuel tank level and economy data, whilst the inclusion of the YCOP security will give peace of mind protection.

ACCELERATION COMPARISONAcceleration (0-60 m): F115B is 0.7 sec faster than the F115A

MODEL WEIGHT COMPARISON

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VARIABLE TROLLING SPEEDControlled by command link gauges, the operator can adjust the engine’s

trolling speed from 600 to 1000 rpm in 50 rpm increments. This helps provide precise and consistent trolling speeds in an array of conditions.

The Variable Trolling feature allows anglers to adjust the boat trolling speed in small speed increments. The ability to fine tune lure presentations to even the

fussiest species giving fishermen unprecedented advantages.

UP

DOWN

Remote control model (ET)

Engi

ne S

peed

(r/m

in)

600

650

700

750

800

850

900

950

1000

50 r/min

Tiller handle model (EHT)

UP

DOWN

140 150 160 170 180 190 200 210 220

Honda® BF115

Mercury® Four-Stroke 115

Suzuki® DF115

Yamaha F115A

Yamaha F115B

216.8 kg

180.98 kg

181.89 kg

186 kg

171 kg*

7 7.5 8 8.5 9 9.5 10

0.7 sec faster

F115A

F115B

(Test performed with Skeeter® TZX 170)

ECM CONTROL SYSTEMA multitude of advanced sensors constantly provide vital atmospheric and engine conditions to the Engine Contol Module (ECM), which instantly makes the precise adjustments for optimum performance and efficiency.

ECM

Throttle position sensor

Oil pressure sensor

Crank position sensor Cam position

sensor (EX)

Knock sensor

APS(F200F,F175A)

Intake air temperature/Pressure sensorEngine temperature

sensorCam position sensor (IN)(F200F,F200G)

BEST IN-CLASS CHARGING POWERThe new alternator delivers more power than before: 35 amps at wide open throttle (compared to 24 for the previous F115) producing a full 28 amps at only 1,000 rpm which means it has sufficient output to keep charging the battery even at low rpm.

10

15

2000 3000 4000 50000

Alte

rnat

or O

utpu

t (Am

p)

1000 6000

20

Engine Speed (r/min)

25

30

35

FLANGE COUPLING FLYWHEELWith a service friendly design, the flange-mounted flywheel is fastened by 6 easily-accessible bolts.

Y A M A H A F 1 1 5 B F O U R - S T R O K E : 7

PERFECT TIMINGThe flywheel flange and crankshaft has been cast from

a single piece to save on weight. The sprockets to the belt have been engineered to reduce mass allowing for quicker acceleration.

DOHC 16 VALVEThe 16 valve, DOHC (Dual Overhead Camshaft) systems offers optimum valve

control from low to high end speeds. The F115B incorporates larger intake and exhaust valves which enhances response, efficiency and significantly improves

the mid-range torque.

MULTI-POINT ELECTRONIC FUEL INJECTION

The ECM controlled multi-point electronic fuel injection system precisely measures the fuel and injects it into the combustion chamber at the optimum

timing to increase performance and assure quick engine starting in various environmental conditions.

The four-stroke, four-valve per cylinder F115B is able to maximize combustion efficiency in a way that no two-stroke can, delivering the utmost in quiet power

and performance.

81MM CYLINDER BOREThe cylinder bore size has been increased from 79mm to 81mm which

provides more engine torque. A larger valve was adopted for increased transfer efficiency for both intake and exhaust.

OFFSET CRANKSHAFTPreviously only seen in larger capacity engines, the all-new F115B sees the introduction of a 5mm offset crankshaft which encourages efficient combustion transfer.

: Fuel

: Vapor

: Blow-by gas: Oil

: Water

THROTTLE BODYThe introduction of a 60mm size single bore throttle body minimises intake resistance and provides first-rate response for acceleration and high speed operation.

CLEAN AND ENVIRONMENTALLY FRIENDLY HYDRO-CARBON GAS CONFINEMENT SYSTEMThe new Yamaha F115B utilises the hydrocarbon gas confinement system to reduce the release of emission in the atmosphere. The HGCS features 3 sub-systems:

1. The fuel vaporization control system which cools the fuel to minimize vaporized gas in the vapour separation tank.

2. The fuel vapour accumulation system includes a carbon canister which absorbs cooled vapours from the vapour separation tank rather than discharging it into the air atmosphere.

3. The hydrocarbon gas re-burning system eliminates vaporized gas and blow-by gas by returning it to the intake manifold for re-burning.

Offset 5 mm

: Air

Y A M A H A F 1 1 5 B F O U R - S T R O K E : 9

INTAKE MANIFOLDConstructed from heat resilient durable plastic, the intake manifold

design reduces engine noise and improves low speed stability.

EXHAUST MANIFOLD The newly-developed exhaust manifold removes exhaust gases effectively,

promoting clean and efficient power. The water jacketed manifold allows for easy disassembly for servicing and is anodised for durability.

WATER SEPARATING FUEL FILTER The water detection sensor incorporated in the fuel filter protects the injection

system from debris and water damage. If water has contaminated the fuel filter, a “Water in Fuel” warning will be activated.

: Exhaust Gas

STARTING MOTOR The F115B uses a coaxial reduction motor to provide high torque cranking in

a limited space. This compact and high torque starter ensures the engine will start first time, every time.

PTT UNIT AND BRACKETThis compact and lightweight single ram PTT unit and bracket have been developed exclusively for the F115B. The maximum tilt angle can be adjusted with the optional tilt limiter, to prevent cowl damage on some boats and accessories.

UPPER CASING The two-piece split style upper casing contributes to a service friendly design. The rigid two piece construction is both durable and lightweight. The upper half includes the oil pan. A water jacket is built into the bottom for oil cooling.

OIL CATCH TRAYThe convenient and environmentally-friendly tray catches excess oil from the filter preventing spills during oil changes, reducing filter servicing time.

LABYRINTH EXHAUST SYSTEM Yamaha’s proven labyrinth exhaust system reduces engine noise at low RPM and idle. A water sealed outer wall around the exhaust muffler effectively reduces exhaust tone for a whisper quiet operation.

Exhaust Gas

Y A M A H A F 1 1 5 B F O U R - S T R O K E : 1 1

RECTIFIER-REGULATORThe water cooled rectifier-regulator ensures a reliable 35 amp power supply.

Providing stable battery charging to replenish voltage used by varied on-board electrical accessories.

MULTIFUNCTION TILLER HANDLE (OPTIONAL)

Yamaha’s award-winning Multifunction Tiller Handle offers the benefits demanded most in a tiller control. From its front-mounted ignition key switch

and gear shift controls, to the easy-to-use Variable Trolling RPM Switch, it’s ergonomic design provides maximum control with maximum comfort.

SHIFT DAMPENER SYSTEM (SDSTM)Yamaha’s patent-pending Shift Dampener System (SDS) delivers smooth and

quiet operation when both shifting and while in gear by absorbing the force that is created. A new aluminium series of SDS propeller has been developed

and can be fitted to the F115B in certain applications.

DIA. (IN) PITCH PART NUMBER

13 1/2 9 6EK-45941-0013 1/2 10 1/2 6EK-45943-0013 1/2 12 6EK-45945-0013 1/2 14 6EK-45947-0013 1/2 16 6EK-45949-00

: Water

Emergency stop lanyard

Throttle control

Low oil press. alert

PTT controlOverheat alert

Variable trolling switch

Shift controlEngine start/stop

NeutralReverse Forward

Environmental protection Corrosion prevention Security

Optional

Side intake top cowling

Water separation top cowlingPropeller damper

cooling systemNew light weight apronCounter rotation

available

Coaxial reduction starting motor

Micro-computer control

High output alternator

Water cooled rectifier-regulator

Variable trolling switch

New light weight bottom cowling

DOHC L4 16 big valve engine

Light weight camshaft drive train

Flange mounted flywheel

Water detection fuel filter

Water in fuel detection

Ultra low noise exhaust system

3 stages Hydro-carbon gas confinement system

Ultimate Corrosion Protection incorporated in.

Multiple sacrificial anodeFuel vapourise control

system

Freshwater flushing device

Fuel vapour accumulation system Stainless steel

water pumpHydro-carbon gas re-burning system Stainless steel

water tube

Cartridge oil catch tray

Heavy duty anodized muffler

YDC30, marine aluminum alloy

Low oil press. warning

Emergency engine stop lanyard

Y-COP immobiliser (optional)

Start-in-gear protection

Anti knocking control system

Multi-point electronic fuel injection

2 piece upper casing/Oil pan with oil cooling system

Large capacity mounting rubber/ Long span mounting system

Single big bore throttle body

Drive belt andtensioner

Center taking out exhaust manifold

YDIS interface

Prime start

Command Linkcompatible

New "K-series" Shift Dampener System prop

6Y8 digital meterTilt limiter

Special treatment gear

F115A lower unit

EPA/CARB 3stars

Single ram PTT unit

Tuned intake manifold

Offset crankshaft

Overheat warning

Over rev. limiter Fail safe system

F115B FEATURES

Y A M A H A F 1 1 5 B F O U R - S T R O K E : 1 3

660 (26.0)

35˚

1552

819 (32.2)

518

(20.

4)

L: 1

629

(64.

1)X:

175

5 (6

9.1)

L: 5

16 (2

0.3)

X: 6

43 (2

5.3)

66˚

4˚

12˚

Unit : mm (in.)

The specifications are subject to change without notice.

F115B DIMENSIONS

Fuelinjector

FuelVapourseparator

Fuel control

Battery

Digital network system (optional)

Vapour shut-off valve

Air

Waterseparator

Crank position sensorShift position switchThrottle position sensorTrim sensorEngine temperature sensorOil pressure switchIntake air temperature sensorIntake air pressure sensorKnocking sensorWater detection sensor

Vapour

Transmitter

Immobiliser (optional)

ReceiverSpeedmeter

(Variable trolling RPM switch)

Tachometer

Canister

ECMIgnition control

Idle control

Fuel feedpump

Idle speedcontroller

Ignitionswitch

Multi-hub

Remotecontrol

F115B SYSTEM

Y A M A H A F 1 1 5 B F O U R - S T R O K E : 1 5

MODELS

Model name F115LB, F115XB, LF115XB

Shaft length L, X

Dry weight L:171 kg, X:176 kg

PERFORMANCE

Max. propeller shaft output 84.6 kW (115 ps) @5800 rpm

Full throttle operating range 5300-6300 rpm

Idling speed 650-750 rpm

Variable trolling switch adjustment 600-1000 rpm (50 rpm step)

Remote control Mechanical

ENGINE

Engine type Four-Stroke, 16-Valve, DOHC, In-line 4

Displacement 1832cc

Bore × stroke 81.0 × 88.9

Compression ratio 10:1

Starting device Prime start

Fuel induction system Electronic fuel injection

Lubrication system Wet sump

Engine oil capacity 3.2 L/3.0 L *with/without oil filter exchange

Ignition system TCI Microcomputer

Alternator 35 Amp (Battery charge: 28 Amp)

Cooling system Raw-water, thermostatically controlled

Exhaust system Through propeller hub

BRACKET/ DRIVE

Trim Continuously variable

Shallow water drive Continuously variable

Steering angle 35 deg. each direction

Gear shift F-N-R

Gear ratio 2.15 (28/13)

Propeller fitting Spline

Propeller availability 2-25 pitch K/KL Series

Propeller rotation Clockwise/Counter clockwise

NOTE

Emission rating 3 Star Ultra Low Emission

Recommended fuel Regular unleaded

Recommended engine oil Yamalube SAE: 5W-30, 10W-30 API: SG, SH, SJ, SL

WARRANTY 4 Years Recreational

BASIC SPECIFICATION

S

This document contains many of Yamaha’s valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identification purposes only, and are not intended to be an endorsement. Due to Yamaha’s ongoing commitment to product improvement, we reserve the right to change without notice, equipment, materials, or specifications. The information and data contained herein is approximate and subject to many factors and variables, including but not limited to atmospheric, water, and equipment conditions, and operator ability. Therefore, such information and data is provided as a guideline only. Consult appropriate Yamaha rigging information for complete rigging compatibility and requirements information for particular configurations.