115 HP 2-Stroke TLDI Outboard

TLDI Model MD115

TLDI® outboards provide the environmental offerings of four-strokes while never compromising the powerful running performance of two-strokes and our TLDI® 115 hp outboard is no exception.

With its three step adjustable trolling speed control, quick acceleration response, compact size, and fuel economy unlike any other, The 115 hp TLDI® can support a wide range of needs for both the pleasure and commercial boater alike. The 115hp TLDI® outboard continues the long standing Tohatsu tradition of anticipating the tough demands of the next generation of boaters.

Tohatsu 115 hp TLDI® Benefits:

  • Uniquely designed cowling with extra internal layering to provide a much quieter operation than conventional 2-stroke outboards
  • Equipped with a high output alternator that produces 37 amps of power even at 1000rpm and a whopping 40 amps at wide-open throttle
  • Comes standard with a convenient built-in freshwater flush system that simplifies routine engine flushing
  • Air assisted direct fuel injection system that provides excellent fuel economy
  • Excellent horsepower-to-weight ratio
  • Lightweight and compact
  • Ultra-low emission, EPA and CARB approved
  • 5 Year limited warranty

High Performance and Easy Operation:

  • Inductive ignition system for reliable starting
  • Outstanding acceleration
  • Electronic oil pump for more precise oil regulation throughout the rpm range
  • Multi-point oil injection system to more completely lubricate vital engine components
  • Power Trim & Tilt
  • Remote control box**

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 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
  • User adjustable idle and trolling speeds
  • Tachometer and Trim & Tilt Gauge**
  • Aluminum propeller

Warning & Protection:

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


The TLDI® series are Tohatsu's award winning outboard motors that have an established reputation for being compact in size while demonstrating highly desired features such as low emissions and high fuel economy that are demanded by the new generation of boaters.

They are powered by a direct fuel injection system and a 32 bit ECU (Engine Control Unit). The ECU gives precise fuel injection instructions in accordance to the operating conditions detected by the multiple sensors located on the motor. The TLDI® outboard motors meets all of the emission regulations stipulated by EPA (Environmental Protection Agency) and CARB (California Air Resources Board).


Individual sensors Individual Sensors
6 individual sensors provide constant vital engine information to the ECU for maximum efficiency.


115 Amps High Output Alternator
The 115 TLDI® is equipped with a high output alternator that produces 37 amps of power even at 1,000 rpm and a whopping 40 amps at wide-open throttle.


Idle noise reduction system Idle Noise Reduction System - The exhaust gases and the sound are routed through the labyrinth exhaust. This process reduces the noise level to a minimum when exiting above the water line through the idle port.  


Engine Control Unit Engine Control Unit (ECU)
The 32 bit engine control unit controls the fuel injection and ignition timing for TLDI® outboards.


Flushing System Fresh Water Flushing Port The 115 hp TLDI® comes standard with a convenient built-in freshwater flush system.  Located on the side of the engine, the flushing port simplifies routine engine flushing.  


Air compressor Air Compressor
One of TLDI®'s essential engine components that is the driving force in achieving stabilized fuel injection.


Direct fuel injection into cylinders Direct fuel Injection into Cylinders - Due to the intrinsic design of the chamber on the cylinder head, the finely atomized fuel mist created by the fuel injector is injected near the spark plug to achieve ideal combustion.  


Multifunctional tachometer Multifunctional Tachometer - The tachometer informs the operator of potential problems through the meter indicator and warning lamp. (Remote models only.)


Pistons Pistons Dedicated to TLDI® Outboards - Teflon coated pistons (equipped on MD 75/90/115) with a concave shape to the head were specifically designed for TLDI® and significantly increase the fuel combustion efficiency.  


Three step trolling speed control 3-Step Trolling Speed Control - The idling speed can be set to any of the three rpm ranges, 700, 800 or 900, by adjusting it on your key switch. This feature allows you to select the ideal trolling speed for maneuvering during a variety of current and wind conditions.


Engine (No. of Cylinder) 4
Output 115hp (84.6 kw)
Displacement 1768 cc (107.9 cu.in)
Bore x Stroke 88 x 72.7 mm (3.46 x 2.86 in)
Starting Electric
Control Type Remote Control
Gear Shift Forward - Neutral - Reverse
Gear Ratio 2.0:1
Propeller Selection Range 11" - 21"
Transom Height 20", 25"
Fuel Unleaded Gasoline (87 Octane)
Oil Type Premium TCW-3 or Recommended
Fuel Tank Optional
Weight* 392 lbs (178 kg)
Alternator Output 12V, 490W, 40A
Max. RPM Range 5,150 - 5,850
Direct Fuel Injection S
Inductive Ignition System S
Start In Gear Protection S
Thermostat Controlled Cooling System S
Through-The-Prop Exhaust S
Power Trim and Tilt S
Variable Idle Speed 700, 800, 900 rpm



Parts Book Type Brand Model Book Year Book #
Download TLDI Nissan NSD115A 2006 002N21053-0
Download TLDI Tohatsu MD115A 2006 002-21053-0
Download TLDI Tohatsu MD115A2 2010 002-21053-2
Download TLDI Tohatsu MD115A2 2011 002-21053-3
Download TLDI Tohatsu MD115A2 2012 002-21053-4
Download TLDI Tohatsu MD115A2 2013 002-21053-5
Download TLDI Tohatsu MD115A2 2014 002-21053-6
Download TLDI Tohatsu MD115A2 2015 002-21053-0AE

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Prop Type Load* Diameter Pitch Blades Standard Equip. Part # Comments
aluminum light 13.2 21 3   9999RUBA321M Rubex/hub kit required
aluminum light 12.75 21 3   3HKB645450  
aluminum light 13 19 3   3T1B645410  
aluminum light 13.2 19 3   9999RUBA319M Rubex/hub kit required
aluminum light 13.25 17 3   9999RUBA317M Rubex/hub kit required
aluminum light 13.25 17 3   3T1B645360  
aluminum moderate 13.25 16 3   3T1B645340  
aluminum moderate 13.5 15 3   9999RUBA315M Rubex/hub kit required
aluminum moderate 14 13 3   3T1B645270  
aluminum heavy 13.75 13 3   9999RUBA313M Rubex/hub kit required
aluminum heavy 14 11 3   9999RUBA311M Rubex/hub kit required
aluminum heavy 14 11 3   3T1B645230  
aluminum heavy 14 9 3   9999RUBA309M Rubex/hub kit required
stainless steel  NA 13.25 19 3   PT70115P19  
stainless steel  NA 13.25 18 3   NM889610180  
stainless steel  NA 13.25 17 3   PT70115P17  
stainless steel  NA 13.25 15 3   PT70115P15  
stainless steel  NA 13.25 14 3   PT70115P14  

Repair Kits/Electrics

Part Number Description
3C7-87322-1 Water Pump Repair Kit (MD70/75/90/115)

Fuel Tanks + More

Part Number Description
3FF70-2004M Fuel line hose (no connectors/fittings; fits all models)
99999-37851 Tohatsu Water/Fuel Separator Kit (includes one filter)
99999-37801 Replacement 10 micron filter (for Tohatsu Water/Fuel Separator)
99999-UF10K UNIKAS UF-10K Water/Fuel Separator Kit (includes one filter)
99999-UF10RF Replacement 10 micron filter for Unikas UF-10K (includes replace o-ring)