Tohatsu MFS30DEFS 30HP Outboard – 15in Shaft
Tohatsu MFS30DEFS generates 30 horsepower. The 15-inch shaft suits mid-size boats. Well matched to mid-size aluminum and fiberglass boats. First-time buyers like the low learning curve at the helm.
- 30 horsepower, ready to run
- 15-inch shaft, standard fit
- Backed by standard marine warranty
- Shaft length 15 inches
- 15-inch shaft for most transoms
Description
Hunting heavily weeded backwaters demands the explosive holeshot acceleration of the Tohatsu MFS30DEFS to clear shallow flats rapidly. The 500cc inline-three engine utilizes battery-less Electronic Fuel Injection to vaporize fuel instantly, launching loaded 14-foot aluminum skiffs onto plane without mechanical hesitation. Measuring your hull geometry ensures this 30hp short shaft tiller outboard mounts securely without generating excessive lower unit hydrodynamic drag.
Lift the lower unit completely clear of mud flats by leveraging the manual tilt bracket as an immediate physical lifting aid. You grab the rear cowl grip and pull the 58 kg gearcase upward to prevent devastating propeller impacts. Engineers cast the midsection using impact-deflecting marine aluminum. This structural upgrade survives severe mechanical strikes when repowering standard transom utility skiffs for extreme shallow water operation.
Key Features of Tohatsu MFS30DEFS
- Battery-Less EFI: Atomizes fuel perfectly using internal magnetic power, guaranteeing reliable cold-weather pull starts if the primary 12-volt battery fails.
- 15-Inch Standard Shaft: Matches low dinghy transoms perfectly, preventing lower unit drag and maximizing fuel efficiency on light inflatable hulls.
- Manual Tilt Mechanism: 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.
- 17-Amp Charging Alternator: Outputs constant electrical current while running, keeping small deep cycle batteries topped off for navigation lights.
- Low-Copper Marine Alloy: Blocks severe galvanic decay physically, protecting the powerhead block across decades of daily saltwater exposure.
- Through-Prop Exhaust: Channels toxic combustion gases directly underwater, keeping the aft operator station completely free of smoke.
- Accessible Oil Drain: Simplifies routine crankcase lubrication changes, saving significant time during seasonal maintenance prep without specialized tools.
- 2.17:1 Gearcase Ratio: Multiplies engine torque effectively, translating the 500cc displacement into relentless pushing force for loaded hunting skiffs.
- Clean Four-Stroke Combustion: Burns fuel highly efficiently without oil mixing, easily meeting strict local waterway emissions regulations and EPA standards.
Why Choose Tohatsu MFS30DEFS
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. Finding a reliable electric start portable outboard solves heavy payload limits on small hulls.
- 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 30hp 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 30HP MFS30DEFS Specs
| Brand | Tohatsu |
| Full Model Code | MFS30DEFS (Aqua Marine Blue) |
| Country of Origin | Japan |
| Engine Family/Series | MFS FourStroke (New Gen) |
| Engine Type | Inline 3 / 4-Stroke |
| Displacement | 0.50 Liters (500 cc) |
| Horsepower | 30 HP @ 6000 RPM |
| Full Throttle RPM Range | 5500 - 6100 RPM |
| Fuel Induction System | Battery-Less Electronic Fuel Injection (EFI) |
| Alternator Output | 17 Amps |
| Gear Ratio | 2.17:1 |
| Shaft Length | 15" (Short) |
| Dry Weight | 58 kg (128 lbs) |
| Bore x Stroke | 61 x 57 mm |
| Starting & Steering System | Electric Start w/ Multi-Function Tiller |
| Trim/Tilt Method | Manual Tilt |
| Oil Capacity | 1.8L |
| Recommended Fuel | 87 Octane |
| Standard Warranty | 5-Year Limited |
| Application | The ultimate power-to-weight 30HP short-shaft tiller for nimble skiff performance. |












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