When you have a small boat that needs small power, look to Tohatsu’s 4 hp 4-stroke. It provides reliable horsepower while also providing cleaner emissions for you and the environment.Small in size, this 4 hp has an internal fuel tank built into the motor for hassle-free outings on the water. Let this Tohatsu 4 hp provide you with the perfect compact, fuel-efficient power you need! 3-way storage is standard on all small Tohatsu engines.

Tohatsu 4-stroke benefits

  • Light and compact!
  • Designed with proven technology
  • Greatly reduced induction noise for a quieter ride
  • Sacrificial anode that protects the engine from electrolysis
  • Ultra Low emissions, U.S. EPA and CARB approved

Easy operation and handling

  • Digital CD ignition for easier engine starting, quicker throttle response and smoother trolling
  • Fast-idle choke system allowing easier manual choke operation
  • Recoil starter with larger reel making manual starting fast and easy
  • Shallow water drive
  • 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
  • Plastic fuel tank Built-in 1.15 liter includes fuel connector for use with an optional external fuel tank
  • Aluminum propeller


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


Power4.00 HP / 2.94 KW
Bore and stroke59 x 45
Max. Speed range4500 - 5500
Starter systemmanual
Control systenHandle or opt. remote control
Gear ratio2.15:1
Propeller Selection area6" - 9"
Water level15", 20"
Fuelunleaded gasoline
Recommended OilFour Stroke Engine Oil
Fuel tank12l separate tank and/or 1.5l integraltank
Weight26.10 kg
Alternator powerOpt. 12V, 60W, 5A
TOSC compatibility*-
All TOHATSU Four Strokes meet EU emission standards
Standard- & Optional Equipment
Type S/L
Electric Starter -
Manual Recoil Starter
Decompression Release
Engine Stop Switch Lanyard
Alternator o
Rectifier o
Dual Tank Connector
Transom 15/20
Propeller Selection area
Analog Tachometer -
Analog Trim Meter -
Remote Control Box -
12L Plastic Fuel Tank o
1.15L In-Tank
Tool Kit
Emergency Starter Rope
Spare Spark Plugs
Owners Manual
Standard       Optional o
  • 1 Cylinder

  • Alternator

  • Built-in Tank

  • Charging System

  • Dual Fuel System

  • Front Shift Control

  • High Solid Paint Coating

  • Light Weight

  • Steering Friction Adjustment

  • Thermostat

  • Throttle Friction

download specification file


MFS 4 Dimensions