Tohatsu MFS100AJETETUL 100HP – Jet 25″ Shaft Tiller or Remote

Tohatsu MFS100AJETETUL 100HP FourStroke Jet Drive

The Tohatsu MFS100A Jet Drive pairs a jet pump with a 2.0L inline 4-cylinder 16-valve SOHC engine, weighing 412 lbs, built for extreme shallow-water navigation. The jet pump replaces a traditional propeller for better obstacle clearance, and the 25-inch transom height model suits aluminum river boats and skiffs in Mulmarine’s marine outboard power lineup that need to navigate over rocks, sandbars, and oyster reefs without mechanical damage.

Peak output holds between 5000-6000 RPM, delivering throttle response for rapid hull planing. The direct jet drive system translates power into high-velocity water thrust, giving directional stability in turbulent river currents. This engine reflects Japanese engineering standards, with a corrosion-resistant block for high thermal efficiency in environments where propped outboards can’t survive.

Technical Specifications of Tohatsu MFS100A Jet

• The 2.0L L4 16-valve SOHC powerhead provides reliable displacement and torque for heavy loads in shallow water.
• Direct Jet Drive propulsion eliminates the propeller and lower unit gearcase for operation in inches of water depth.
• Electronic Fuel Injection (EFI) ensures reliable zero-choke starting and strong thermal efficiency.
• A 35-Amp alternator delivers charging power to support navigation systems and safety electronics.
• Integrated Power Trim and Tilt allows precise adjustment of the jet nozzle angle for hole-shot capability and trim.
• NMEA 2000 certification allows digital integration with onboard displays for real-time engine monitoring.

Shallow Water Engineering

This jet technology uses its 2.0L displacement to produce strong water flow through the intake grate, giving the mechanical integrity needed for pushing heavy aluminum hulls through river rapids and tidal mudflats.

Precision Fuel Induction

The EFI system monitors atmospheric variables for the right combustion ratio, guaranteeing instant starting and preventing engine bogging during rapid acceleration.

Tohatsu 5-Year Warranty

Every Tohatsu MFS100A Jet carries a 5-year limited warranty, with genuine parts and certified technicians through a nationwide dealer network.

River & Mudflat Application

This engine suits large aluminum river boats and shallow-draft skiffs needing aggressive power and zero propeller risk, well matched for commercial use or as primary power on recreational vessels.

Maintenance & Longevity

Maintaining the jet intake grate and impeller clearance preserves engine performance in shallow water. Pro Tip from the Shop: inspect the jet pump impeller for dings or wear from sand ingestion, and grease the shift linkage for smooth directional control.