Tohatsu 3.5 hp Four-Stroke Outboard


The 3.5hp Tohatsu long shaft 4 stroke motor is the perfect outboard for a driftboat. With a driftboat weight is an important consideration. The Tohatsu 3.5 long shaft weighs in at 43 lbs.

We sell the 3.5hp 20-inch long shaft outboard motor. We only sell the long shaft for driftboats. We do not recommend the 15-inch short shaft because it is necessary to use a motor mount on a driftboat. The motor mount raises the motor on the transom. The motor mount does three things:

  1. It allows the anchor bracket to remain in the center of the boat. No more offset anchor masts.
  2. It allows the motor to be put in the optimum tilt position with relationship to the water.
  3. Makes the motor easer to steer and swivel for reverse.

This award winning outboard weighs just 43 lbs and offers exceptional fuel economy. Check out the long list of included features and discover why this popular portable is making big waves.


Included Features:

  • Lightweight and Compact Design
  • Digital CD Ignition System
  • High Grade Marine Alloy Construction
  • Stainless Steel Water Pump Housing
  • Zinc Coated Water Passages
  • Saltwater Rated
  • Sacrificial Zinc Anodes
  • Forward-Neutral Gear Shift
  • 360° Steering w/ Tension Feature
  • Twist-Grip Throttle with Tension Control
  • Convenient Carrying Handle
  • Adjustable Steering Friction Setting
  • Thermostatically Controlled Cooling
  • Visual Oil Level Indicator
  • Adjustable Trim Level (4 positions)
  • Quiet Below-The-Water Exhaust
  • 1.0 Liter (.26 Gallon) Integral Fuel Tank
  • Safety Lanyard Cut-Off Switch
  • Operating Manual & Emergency Tool Kit
  • Tohatsu 5-Year Warranty


  • Engine Type: 3.5hp, 4-Stroke, 1-Cylinder, OHV
  • Displacement: 85.5 cc (5.22 cubic inches)
  • Bore and Stroke: 55 x 36 mm (2.17 x 1.42 inches)
  • Full Throttle RPM Range: 5,000-6,000 RPM
  • Ignition System: Digital CD Ignition
  • Induction Scavenging: OHV
  • Valves per Cylinder: 2
  • Fuel Delivery: Single Venturi Carburetor
  • Fuel Type: Unleaded Gasoline (87 octane)
  • Oil Type: SAE 10W-30 or SAE 10W-40 (SF, SG, SH, SJ)
  • Oil Capacity: 10 fl. oz. (300 ml)
  • Lubrication: Wet Sump
  • Starting System: Thru-Cowl Manual Start
  • Alternator: Not available on 3.5hp models (4hp & up only)
  • Cooling System: Water-Cooled, Thermostatically Controlled
  • C.A.R.B. Rating: Ultra-Low Emission (3-STAR)
  • Saltwater Rated: YES
  • Trim Positions: 4
  • Gear Ratio: 2.15:1
  • Gear Shift: Forward-Neutral w/ 360° Steering for Reverse
  • Propeller: 7.4" Dia. X 7.0" Pitch 3-Blade Composite
  • Fuel Tank (integral): .26 US Gallon (1.0 Liter) Integral Fuel Tank
  • Fuel Range: Approximately 45 min. Run-time @ Full Throttle
  • External Tank Ready: Not available on 3.5hp models (4hp & up only)
  • Transom Height: 20" Long Shaft
  • Weight: 43 lbs (19.05 kg)




  • Motor mount: $180 (pictures above)
  • Stainless steel hardware and safety chain: $20

Meets or exceeds
all Federal EPA
emission standards.

Model #MFS3.5BL
Shaft Length: 20" (Long)
Drive Type: Tiller Handle
Starting: Manual Start
Weight: 43 lbs
Price: $1030.99

Contact Us

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  • Boat Lot Location
    95 W. Center St.
    Victor, ID 83455

  • Mailing Address
    PO Box 52
    Victor, ID 83455




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Gary Beebe

Gary Beebe

Mountain Driftboat is owned and operated by Gary Beebe, a 28-year fly fishing guide veteran. Gary has guided in Montana, Idaho, Wyoming and Colorado. Because of Gary's personal knowledge of the rivers in the West, he can help you pick the driftboat that will be right for you.