90 HP 4-Stroke Midrange Outboard

Model BFT90

Meet the versatile and dependable Tohatsu 90 hp four stroke outboard. In-line 4 cylinder SOHC delivers exceptional torque and power, while still weighing in at only 359 pounds, which makes the BFT 90hp one of the lightest motors in its class. The convenience is even built right into the engine with the built-in freshwater flushing system, for easy routine flushing. To protect against corrosion, the BFT 90 hp has a “Double Sealed” multi-layered paint process, sacrificial anodes and stainless steel technology, along with waterproof connectors, all of which work to enhance your motor’s corrosion protection. Reliability and durability come standard on this high-power, proven-technology four stroke outboard engine.

Tohatsu 75hp 4-Stroke Benefits:

  • High output 44 amp alternator that produces nearly twice as many charging amps as some competitors
  • Weighing in at only 359lbs makes the BFT75 one of the lightest motors in its class
  • In-line 4 cylinder SOHC, dual intake valves help deliver excellent torque and power
  • Double sealed multi-layered paint process to help protect against corrosion
  • Ultra-low 3 star CARB emission approved
  • 5 Year limited warranty

Four Stroke Technology:

  • Dual stage induction for improved performance
  • Lean burn control for better fuel economy at cruising speeds
  • Boosted low speed torque helps to delivers an exceptional hole shot
  • 3-way cooling system to help protect against overheating
  • Lean burn control for better fuel economy at cruising speeds
  • A crankshaft-driven trochoid oil pump ensures long-term durability of critical engine components
  • Multi-port programmed fuel injection delivers the precise amount of fuel/air to each cylinder

Fundamentals for User Convenience and Reliability:

  • Built-in freshwater flushing system for easy routine flushing
  • Through-the-prop exhaust for a quieter ride
  • Electronic Control Module protocols allow engine data to be interfaced with on-board systems and systems displays, such as SONAR or GPS
  • Sealed starter motor that is inverted into a sealed chamber to help protect vital components against elements

Warning & Protection:

  • Low oil pressure warning
  • Overheat warning
  • Start-in-gear protection
  • Over-rev. limiter

Features

1

Engine Control Unit

BLAST® System - improves acceleration at low speeds

Boosted Low Speed Torque, or BLAST, improves acceleration at low speeds. A quick movement of the throttle control activates the BLAST® system, advancing the ignition curve quickly. This will greatly improve "Hole Shot".

*BLAST® is a registered trademark of Honda Motor Co., Ltd.

2

Engine Control Unit

ECOmo® - Superior fuel efficiency

ECOmo® increases fuel efficiency by allowing combustion to operate on a leaner air/fuel mixture. At cruising speed, this engine runs on up to 30% less fuel** than others in its class.

*ECOmo® is a registered trademark of Honda Motor Co., Ltd.

**Based on EPA Specific Fuel Consumption Mode.

3

Three step trolling speed control

Multi-port Programmed Fuel Injection [PGM-FI]® - Powerful Performance

Programmed Fuel Injection delivers the precise amount of fuel/air response with superior fuel efficiency.

4

Three step trolling speed control

4-front Corrosion Protection System

A patented, "Double Sealed" multi-layered paint process, sacrificial anodes and stainless steel technology, along with waterproof connectors, all enhance corrosion protection.

5

Three step trolling speed control

Variable Valve Timing and Lift Control

Variable Valve Timing & Lift Electronic Control system provides power where and when you need it. This gives you a broader, flatter torque curve and smooth power delivery throughout the engine's operating range. The result is a superior combination of power, torque and fuel efficiency.

6

Three step trolling speed control

Dual Stage Induction - Breathing easier improves performance

BFT 150 has a unique variable intake system which optimizes air flow to match the engine's speed. The results are maximized combustion efficiency, increased torque, and superb fuel economy.

Specifications

Engine (No. of Cylinder) 4 Cylinder SOHC
Output 90 hp (67.1 kw)
Displacement 1,497 cc (91.3 cu.in.)
Bore x Stroke 73 x 89 mm (2.9 x 3.5 in)
Starting Electric
Control Type Remote Control
Gear Shift Forward - Neutral - Reverse
Gear Ratio 2.33:1
Ignition System MicroComputer Programmed
Transom Height 20"
Fuel Unleaded Gasoline (87 Octane or higher)
Oil Type NMMA Certified FC-W® 4-stroke oil** SAE 10W-30/40 (SF, SG, SH, SJ)
Oil Capacity 1.24 gal. (4.4 L) w/filter
Weight* 366 lbs. (166 kg)
Alternator Output 12V, 420W, 44A
Max. RPM Range 5,300 - 6,300
Programmed Fuel Injection S
Digital CD Ignition System S
Start In Gear Protection S
Thermostat Controlled Cooling System S
Through-The-Prop Exhaust S
Overheat Buzzer S
Oil Pressure Warning S
Power Trim and Tilt S
Variable Valve Timing & Lift Control S

LEGEND:

  • 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.

    Dimensions

    Parts

    Parts Book Type Brand Model Book Year Book #
    Download 4-Stroke Tohatsu BFT90A 2014 002-14ZY9ET1-0
    Download 4-Stroke Tohatsu BFT90A 2015 002-14ZY9ET1-1

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    Propellers

    Prop Type Load* Diameter Pitch Blades Standard Equip. Part # Comments
    aluminum light 13.2 21 3   9999RUBA321M  RUBEX / HUB KIT REQUIRED
    aluminum light 13.2 19 3   9999RUBA319M  RUBEX / HUB KIT REQUIRED
    aluminum light 13.25 17 3   9999RUBA317M  RUBEX / HUB KIT REQUIRED
    aluminum moderate 13.5 15 3   9999RUBA315M  RUBEX / HUB KIT REQUIRED
    aluminum heavy 13.75 13 3   9999RUBA313M  RUBEX / HUB KIT REQUIRED
    aluminum heavy 14 11 3   9999RUBA311M  RUBEX / HUB KIT REQUIRED
    aluminum heavy 14 9 3   9999RUBA309M  RUBEX / HUB KIT REQUIRED
    stainless steel  NA 13.25 21 3   PTNRS3R21P  
    stainless steel  NA 13.25 19 3   PTNRS3R19P  
    stainless steel  NA 13.25 17 3   PTNRS3R17P  
    stainless steel  NA 13.75 15 3   PTMQF3R15P  
    stainless steel  NA 13.25 15 3   PTNRS3R15P  
    stainless steel  NA 13.25 14 3   PTNRS3R14P  
    stainless steel  NA 13.75 13 3   PTMQF3R13P  
    stainless steel  NA 14 11 3   PTWBX3R11P  

    Repair Kits/Electrics

    Fuel Tanks + More