Tohatsu MFS20EL 20HP 4-Stroke Outboard – 20in Shaft
For weekend trips, Tohatsu MFS20EL channels 20 horsepower. A 20-inch shaft rounds out the rigging. Popular among owners of small aluminum boats and light jon boats. Owners choose it for steady output without excess weight.
- 20 horsepower, ready to run
- 20-inch shaft, standard fit
- Light enough for easy mounting
- Rated at 20 horsepower
- Straightforward to service and maintain
Description
Remote hunting camps depend entirely on the battery-free Tohatsu MFS20EL to deliver instant ignition in freezing weather. The 333cc EFI block atomizes fuel flawlessly using internal magnetic power, pushing heavily loaded aluminum workboats upstream against strong river currents. Verifying your exact transom geometry ensures this 20 hp long shaft tiller outboard fits securely without causing excessive hydrodynamic drag on the lower unit.
Clear submerged rocky obstacles safely in shallow creeks by utilizing the six-position manual tilt bracket as a direct physical lifting aid. You grab the rear cowl grip to pull the 44 kg gearcase upward instantly to prevent devastating impacts. Tohatsu casts the lower unit housing using multi-stage anti-corrosion treatments. This structural barrier stops galvanic decay when repowering tall transom utility boats in brackish coastal environments.
Key Features of Tohatsu MFS20EL
- Battery-Less EFI: Atomizes fuel perfectly using internal magnetic power, guaranteeing reliable cold-weather pull starts without requiring a 12-volt battery.
- 20-Inch Long Shaft: Places the anti-ventilation plate deeply beneath tall utility transoms, preventing water pump starvation in heavy chop.
- Manual Recoil Starting: Strips heavy starter motors and battery cables completely from your boat, maximizing available gear payload capacity.
- Six-Position Manual Tilt: Adjusts the running angle physically, allowing the operator to lift the gearcase over shallow coastal reefs safely.
- Multi-Function Tiller Handle: Concentrates shift and throttle inputs squarely in your grip, sharpening handling response in narrow twisting creeks.
- 12-Amp Charging Alternator: Outputs constant electrical current while running, keeping small deep cycle batteries topped off for navigation lights.
- 333cc Inline-Two Block: Produces massive low-end torque internally, lifting heavy aluminum work boats onto plane much faster.
- 2.15:1 Gear Ratio: Multiplies engine torque effectively, translating the 333cc displacement into relentless pushing force for loaded skiffs.
- Low-Copper Marine Alloy: Blocks severe galvanic decay physically, protecting the powerhead block across decades of daily saltwater exposure.
- Clean Four-Stroke Combustion: Burns unleaded fuel highly efficiently without messy two-stroke oil mixing, keeping pristine anchorages completely free of surface oil slicks.
Why Choose Tohatsu MFS20EL
This specific build fits only 20-inch transoms requiring direct physical tiller control. The extended shaft creates massive drag if mounted on a standard 15-inch boat. You cannot wire this to a forward console steering wheel. Procuring a reliable manual start long shaft outboard secures off-grid pushing power.
- Confirm a 20-inch vertical measurement from the transom top to the keel.
- Verify the tiller handle sweep path clears your rear bench seating completely.
- Avoid oil slicks on the water utilizing modern four-stroke internal lubrication.
Ideal Application and Vessel Fitment
This 20-inch manual-start tiller engine is engineered specifically for tall-transom aluminum work skiffs, heavy fiberglass camp boats, and commercial river-running hulls demanding high thrust. By stripping away heavy electric starter motors and utilizing battery-less EFI, operators gain maximum payload capacity for remote area fishing gear. The advanced fuel injection guarantees this reliable manual start long shaft outboard fires instantly in freezing weather, making it the definitive off-grid power plant for rugged backcountry exploration.
Warranty, Support and Maintenance
Authorized recreational operation receives a 5-Year Limited Warranty alongside exceptional factory support. Registered commercial applications fall under a strict 1-Year Limited Warranty with zero corrosion coverage applied to the block. Scheduled maintenance requires replacing gearcase lubricants and changing oil filters at manual-specified intervals. Always save all physical service records. Your engine serial number acts as the only way to source exact genuine replacement parts. Mulmotor provides product-information support before purchase and assistance with order-related questions.
Tohatsu MFS20EL Specs
| Brand | Tohatsu |
| Full Model Code | MFS20EL |
| Country of Origin | Japan |
| Engine Family/Series | EFI Portable Series |
| Engine Type | 2-Cylinder SOHC, 4-Stroke |
| Displacement | 0.33 Liters (333 cc) |
| Horsepower | 20 HP (14.7 kW) |
| Full Throttle RPM Range | 5400 - 6100 RPM |
| Fuel Induction System | Battery-Less Electronic Fuel Injection |
| Alternator Output | 12 Amps |
| Gear Ratio | 2.15:1 |
| Shaft Length | L: 508 mm (20 in) |
| Dry Weight | 44 kg (97 lbs) |
| Bore x Stroke | 61 x 57 mm |
| Starting & Steering System | Manual Recoil & Tiller Handle |
| Trim/Tilt Method | Manual Tilt (6 positions) |
| Oil Capacity | 1.0 Liter |
| Recommended Fuel | 87 Octane |
| Standard Warranty | 5-Year Limited Warranty |
| Application | Aluminum Utility Boats, Fishing Skiffs, Simple Tenders |












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