Tohatsu MFS25DEFS 25HP Outboard – 15in Shaft

SKU: TOH-MFS25DEFS
In Stock

No guesswork, Tohatsu MFS25DEFS channels 25 horsepower. The 15-inch shaft suits mid-size boats. Boaters pick it for a straightforward, low-maintenance setup. Popular among owners of small aluminum boats and light jon boats.

  • 25 horsepower on tap
  • 15-inch shaft for most transoms
  • Backed by standard marine warranty
  • Light enough for easy mounting
  • Shaft length 15 inches
$2,701.00
In Stock
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Description

Lightweight short-shaft performance receives a massive upgrade when the Tohatsu MFS25DEFS applies its 500cc displacement to the water. The inline-three battery-less EFI block forces steady forward momentum, pushing loaded inflatable tenders and minimalist skiffs across choppy marina basins safely. A quick tape measure check validates this 15 inch short shaft portable outboard fits standard hulls perfectly without generating excessive hydrodynamic drag.

Protect your propeller from devastating impacts in skinny water by utilizing the manual tilt bracket to lift the gearcase rapidly. You grasp the cowl grip and pivot the 58 kg assembly upward to clear hidden coastal reefs safely. Engineers cast the lower unit using corrosion-resistant marine aluminum. This structural barrier stops rapid metal pitting when repowering small aluminum boats in saltwater environments.

Key Features of Tohatsu MFS25DEFS

  • 15-Inch Standard Shaft: Matches low dinghy transoms perfectly, preventing lower unit drag and maximizing fuel efficiency on light inflatable hulls.
  • Turn-Key Electric Start: Engages the flywheel instantly via 12-volt battery power, eliminating shoulder strain completely during freezing early morning launches.
  • Battery-Less EFI Backup: Atomizes fuel perfectly using internal magnetic power, guaranteeing reliable cold-weather pull starts if your primary starting battery fails.
  • 17-Amp High-Output Alternator: Outputs constant electrical current while running, keeping small deep cycle batteries topped off for navigation lights.
  • 500cc Powerhead Block: Produces massive low-end torque internally, lifting heavily loaded 12-foot rigid dinghies onto plane much faster.
  • Manual Tilt Mechanism: Features a rigid mechanical lock, safely holding the gearcase out of the water physically while moored at the dock.
  • Ergonomic Tiller Handle: Concentrates shift and throttle inputs squarely in your grip, sharpening handling response in narrow twisting creeks.
  • 2.17:1 Gearcase Ratio: Multiplies engine torque effectively, translating the 500cc displacement into relentless pushing force for loaded hunting skiffs.
  • Anti-Corrosion Castings: Blocks severe galvanic decay physically, protecting the powerhead block across decades of daily saltwater exposure.
  • EPA Compliant Four-Stroke: Burns unleaded fuel highly efficiently without messy two-stroke oil mixing, keeping your tender completely free of oil slicks.

Why Choose Tohatsu MFS25DEFS

You buy this motor to keep rigging dead simple on a standard 15-inch transom boat. It offers zero remote steering capability and lacks heavy power tilt components. Do not attempt to mount this short shaft on a 20-inch tall transom. Finding a reliable electric start portable outboard solves heavy payload limits.

  • Weigh your boat to verify it safely handles this specific 58 kg engine block mass.
  • Check the tiller handle sweep path to confirm it clears your rear seating bench.
  • Keep local lakes clean by running highly regulated four-stroke engine configurations.

Ideal Application and Vessel Fitment

This ultra-portable 15-inch outboard thrives on small inflatable tenders, flat-bottom jon boats, and rigid fiberglass dinghies requiring minimalist power with maximum convenience. Because it features push-button electric starting paired with battery-less EFI, operators gain absolute ignition reliability for remote area fishing. The direct tiller control provides complete directional thrust, making this lightweight 25hp electric start outboard an incredibly nimble propulsion choice for navigating crowded anchorages safely.

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 can assist with product details and order-related questions before purchase.

Tohatsu 25HP MFS25DEFS Specs

BrandTohatsu
Full Model CodeMFS25DEFS (Aqua Marine Blue)
Country of OriginJapan
Engine Family/SeriesMFS FourStroke (New Gen)
Engine TypeInline 3 / 4-Stroke
Displacement0.50 Liters (500 cc)
Horsepower25 HP @ 5500 RPM
Full Throttle RPM Range5000 - 6000 RPM
Fuel Induction SystemBattery-Less Electronic Fuel Injection (EFI)
Alternator Output17 Amps
Gear Ratio2.17:1
Shaft Length15" (Short)
Dry Weight58 kg (128 lbs)
Bore x Stroke61 x 57 mm
Starting & Steering SystemElectric Start w/ Multi-Function Tiller
Trim/Tilt MethodManual Tilt
Oil Capacity1.8L
Recommended Fuel87 Octane
Standard Warranty5-Year Limited
ApplicationPowerful 3-cylinder performance in a lightweight short-shaft tiller configuration.

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