Yamaha Marine Outboard | 115HP | Four Stroke | Long Shaft | Electric Start

The innovative, lightweight design F115 lets you relax and enjoy your boat to the full – knowing you're powered by one of the cleanest, smoothest engines on the planet.


Not only is the engineering impressive - this is a 1.8 litre, 16 big-Valve, in-line 4-cyl DOHC 4-stroke - but it's blended with a host of electro/technical features to make life easier: Compatibility with our optional Digital Network System, Wide Range Power Trim & Tilt with Tilt angle limiter and Y-COP® remote security system (both optional) to name but a few.

The efficiency of our well proven EFI systems and other new combustion technologies ensure the utter dependability of this outstanding Yamaha engine.

Read More

Pickup Availability:

(Out of Stock)

Out of stock

Notify when available

Enter your email address below and we'll notify you when this product is back in stock!

General Info

Transom height


Fuel tank capacity

Oil pan capacity


Weight without propeller

173kg – 177kg


1,832cc 16-Big-Valve DOHC in-line 4-cylinder 4-stroke

1,832cc 16-Big-Valve DOHC in-line 4-cylinder 4-stroke

With its innovative intake and exhaust valve design – and twin camshafts, each driven independently – the 115hp’s intake and exhaust efficiency are dramatically improved, optimising fuel use during combustion. The TCI ignition system ensures easy starting, consistent running, longer plug life – and complete dependability.

Compact, lightweight design - ideal for re-powering

Compact, lightweight design – ideal for re-powering

The versatile 115hp is the leading power-to-weight performer in its class, making it the ideal choice for a wide range of activities – and opening up exciting opportunities for re-powering. The remarkable, powerful performance and smooth 4-stroke efficiency bring a new lease of life to older boats of many types and sizes.

Yamaha Customer Outboard Protection (Y-COP) option

Yamaha Customer Outboard Protection (Y-COP) option

The optional Y-COP immobiliser system is simple, easy to use and highly effective – a neat and simple remote control locks and unlocks the engine at the push of a button. This prevents your outboard engine being taken for any unauthorised joyrides, offering you peace of mind when leaving your boat unattended.

Digital Network System option - clear, accurate information

Digital Network System option – clear, accurate information

The 115hp is the perfect fit for Yamaha’s Digital Network System and Gauges – maximising their performance and efficiency: Multifunction Tachometer with RPM, Hours Run, Trim Angle, Oil Pressure, Warning lamps and Variable Trolling RPM control – and a Speed/Fuel Management Gauge with Tank Capacity and Fuel Economy.

Variable Trolling RPM Control - no more speeding worries

Variable Trolling RPM Control – no more speeding worries

A very relaxing and reliable system, which is standard on the 115hp. Simply set and hold the low speed rpm (between 600 & 1000) in 50 rpm steps, using a button on the tachometer – or on the multi-function tiller handle. This advanced system resets automatically when the throttle is moved again.

35 Amp High Output alternator

35 Amp High Output alternator

A special High Output alternator system is fitted as standard on the 115hp, to ensure that plenty of power is available for engine starts – even after long periods at low RPM or when using multiple accessories. A comforting thought when you’re out fishing – at night – or planning a long, lazy day on the river.

Counter-rotating propeller model

Counter-rotating propeller model

A standard twin-engine installation (both propellers turning clockwise) tends to pull the boat towards the port side, especially at higher speed, making steering more difficult. So the 115hp is offered with a counter-rotating propeller to fit alongside the standard model, giving the driver control with ‘neutral helm’ at any speed.

Additional Features



Remote Control

Trim & Tilt method

Power Trim & Tilt

Light coil / Alternator Output

12V -35Awith rectifier/regulator

Engine immobilizer

YCOP optional



Counter Rotation Model

Available (ETX)

Variable Trolling Speed

With DN Gauges or m-f tiller handle

Shift Dampener System (SDS)



The kW data in this sheet is based on the ICOMIA 28 standard, measured at the prop shaft


Engine type



1,832 cm³

No. of cylinders/Configuration

4/In-line, 16-valve, DOHC

Bore x stroke

81.0 mm x 88.9 mm

Prop shaft output at mid range

84.6 / 5,800 rpm

Full Throttle Operating Range

5,300 – 6,300 rpm

Lubrication system

Wet sump

Fuel Induction System


Ignition / advance system


Starter system

Electric with Prime Start™

Gear ratio

2.15 (28:13)