115 HP 4-Stroke Large Outboard

Model BFT115

Our 115 hp four stroke outboard is an in-line 4 cylinder, with a DOHC 16 valve design, creating a compact and powerful engine. The BFT 115hp includes dual stage induction for improved performance and Lean Burn control for better fuel economy while at cruising speeds. This motor also features Boosted Low Speed Torque, or BLAST, which 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”. With on board warning systems such as low oil pressure, overheat, low battery warning, start in gear protection and over-rev limiter, the Tohatsu 115 hp four stroke engine gives you peace of mind while on the water.

Tohatsu 115 hp 4-Stroke Benefits:

  • High output alternator produces 30 amps of power at 1,000 rpms and 40 amps at 2,000+ rpm
  • Available in 20” & 25” shaft lengths
  • In-line 4 cylinder for excellent performance and sleek design
  • Double sealed multi-layered paint process to help protect against corrosion
  • Ultra-low 3 star CARB emission approved
  • 5 Year limited warranty

4-Stroke Technology:

  • Dual stage induction for improved performance
  • Lean burn control for better fuel economy at cruising speeds
  • Boosted low speed torque helps to deliver an exceptional hole shot
  • 3-way cooling system to help protect against overheating
  • Non-linear rubber mounts provide smoother operation at all engine 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:

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

Warning & Protection:

  • Low oil pressure warning
  • Overheat warning
  • Low battery voltage warning
  • Water in fuel 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.

Specifications

Engine (No. of Cylinder) 4
Output 115 hp (85.8 kw)
Displacement 2,354 cc (143.6 cu.in.)
Bore x Stroke 87 x 99 mm (3.4 x 3.9 in)
Starting Electric
Control Type Remote Control
Gear Shift Forward - Neutral - Reverse
Gear Ratio 2.14:1
Ignition System MicroComputer Programmed
Transom Height 20", 25"
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 1.8 gal. (6.7L) with filter
Weight* 478 lbs. (217 kg)
Alternator Output 12V, 480W, 55A
Max. RPM Range 4,500 - 6,000
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

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 BFT115A 2014 002-147X1-0
    Download 4-Stroke Tohatsu BFT115A 2015 002-147X1-1

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    Propellers

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    Fuel Tanks + More

    Propellers

    Prop Type Load* Diameter Pitch Blades Standard Equip. Part # Comments
    aluminum  NA 14.3 21 3   9999RUBE321M  RUBEX / HUB KIT REQUIRED
    aluminum  NA 14.5 19 3   9999RUBE319M  RUBEX / HUB KIT REQUIRED
    aluminum  NA 14.8 17 3   9999RUBE317M  RUBEX / HUB KIT REQUIRED
    aluminum  NA 15 15 3   9999RUBE315M  RUBEX / HUB KIT REQUIRED
    aluminum  NA 15.5 12 3   PTRVT3R12P  
    aluminum  NA 15.5 11 3   PTRVT3R11P  
    stainless steel  NA 15.25 23 3   PTOFS3R23P  
    stainless steel  NA 14.25 21 3   PTPTZ3R21P  
    stainless steel  NA 15.25 21 3   PTOFS3R21P  
    stainless steel  NA 14.25 19 3   PTPTZ3R19P  
    stainless steel  NA 15.25 19 3   PTOFS3R19P  
    stainless steel  NA 15.25 17 3   PTOFS3R17P  
    stainless steel  NA 14.25 17 3   PTPTZ3R17P  
    stainless steel  NA 14.25 15 3   PTPTZ3R15P  
    stainless steel  NA 15.25 15 3   PTOFS3R15P  

    Repair Kits/Electrics

    Fuel Tanks + More