15 HP 4-Stroke Portable Outboard

Model MFS15

We do our best to provide you with the best engine we possibly can. That's why we have taken the 15 hp model and made it better! You can enjoy added features such as a larger displacement, from 328cc to 351cc, and enhanced motor mounts from this durable 15 hp 4-stroke engine. Go ahead; put the engine to the test! You won’t regret it!

Power Tilt! We've added Power Tilt to our remote steering/throttle models, to provide you even greater operating convenience. This engine offers the same features as all of our 15hp models plus an added power tilt feature for greater operating convenience. As with our other engines, you can count on it to deliver the same reliability our reputation was built on.

Tohatsu 4-Stroke Benefits:

  • Sleek design
  • Light and compact!
  • Designed with proven technology
  • Advanced cross-flow induction for smooth operation
  • Canister style oil filter for easy replacement
  • Larger capacity oil reservoir for optimum lubrication
  • Tuned intake system for crisp takeoffs
  • Ultra-low emission, EPA and CARB 3-Star rating approved
  • 5 Year limited warranty

High Performance and Easy Operation:

  • Digital CD ignition for easier engine starting, quicker throttle response and smoother trolling
  • Recoil starter with larger reel making manual starting fast and easy
  • Large alternator and rectifier for superior battery charging*
  • Front mounted shift lever for easier operation
  • Remote control models available
  • Shallow water drive*
  • 6 trim positions*
  • Adjustable steering friction for reducing steering effort*

Fundamentals for User Convenience and Reliability:

  • Through-the-prop exhaust for a quieter ride
  • Thermostatically controlled cooling system for consistent engine temperature
  • Stainless steel water pump housing liner for outstanding durability
  • High grade marine aluminum alloy that provides the ultimate protection against corrosion
  • Zinc coating on internal water passages for superior corrosion resistance
  • 3.1 Gallon (12 liter) fuel tank with fuel gauge
  • Aluminum propeller

Warning & Protection:

  • Low oil pressure warning (visual and audible**)
  • Start-in-gear protection for safer engine starting
  • Safety lanyard (an essential protection feature standard on all Tohatsu outboards)
  • Over-rev. limiter

* certain models

** remote control models



Engine Control Unit

Front Shift

The shift lever is located on the front of the motor for easier operation.


Engine Control Unit

Simple Steering Friction Lever

The steering friction lever, located at the front of the motor, allows the steering friction to be adjusted for both steady running at high speed and easier maneuvering while trolling.


Three step trolling speed control

Wide Anti-Cavitation Plate with Trim Tab

The wide anti-cavitation plate effectively restrains the propeller from cavitating. The large trim tab helps to achieve effortless steering at high speeds while also providing corrosion protection.


Three step trolling speed control

Air-silencer system

Our air-intake system has a large volume air silencer to ensure engine starting and to suppress air-intake noise during engine operation.


Engine (No. of Cylinder) 2
Output 15 hp (11 kw)
Displacement 351 cc (21.41 cu.in.)
Bore x Stroke 61 x 60 mm (2.4 x 2.36 in)
Starting Electric or Manual
Control Type Remote Control or Tiller Handle
Gear Shift Forward - Neutral - Reverse
Gear Ratio 2.15:1
Propeller Selection Range 6" - 10"
Transom Height 15", 20"
Fuel Unleaded Gasoline (87 Octane)
Oil Type NMMA Certified FC-W® 4-stroke oil** SAE 10W-30/40 (SF, SG, SH, SJ)
Oil Capacity 1 qt. (1000 mL)
Fuel Tank 3.1 US Gal. (12 Lit) Separate Fuel Tank
Weight* 114.4 lbs. (52 kg)
Alternator Output Optional: 12V, 145W, 12A (Standard on Electric Start models)
Max. RPM Range 5,000 - 6,000
Digital CD Ignition System S
Start In Gear Protection S
Thermostat Controlled Cooling System S
Through-The-Prop Exhaust S
Shallow Water Drive S
Oil Pressure Warning S
Power Tilt O


  • S: Standard Features
  • O: Optional on Certain Models
  • * Weight specification is based on the lightest version.

    ** FC-W® is a registered trademark of the National Marine Manufacturers Assoc. (NMMA)

    Specifications and descriptions are subject to change without notice.



    Parts Book Type Brand Model Book Year Book #
    Download 4-Stroke Nissan NSF15A 2000 002N21047-0
    Download 4-Stroke Nissan NSF15B 2001 002N21047-2
    Download 4-Stroke Nissan NSF15B2 2004 002N21047-3
    Download 4-Stroke Tohatsu MFS15B2 2004 00221047-3
    Download 4-Stroke Tohatsu MFS15B2 2006 00221047-4
    Download 4-Stroke Nissan NSF15C 2008 002N21054-1
    Download 4-Stroke Tohatsu MFS15C 2008 002-21054-0
    Download 4-Stroke Tohatsu MFS15C 2008 002-21054-1
    Download 4-Stroke Tohatsu MFS15C 2010 002-21054-3
    Download 4-Stroke Tohatsu MFS15C 2011 002-21054-4
    Download 4-Stroke Tohatsu MFS15C 2012 002-21054-5
    Download 4-Stroke Tohatsu MFS15C 2013 002-21054-6
    Download 4-Stroke Tohatsu MFS15C 2014 002-21054-7
    Download 4-Stroke Tohatsu MFS15D 2015 002-21054-0AE

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