Yamaha 90HP Jet Outboard F90JB

The Yamaha 90HP Jet Outboard F90JB is engineered for boaters who need maximum freedom in shallow, rocky, and fast-moving waters. Featuring a jet drive system with no exposed propeller, this outboard allows confident navigation where conventional prop-driven motors simply can’t go.

Powered by Yamaha’s 1.8-liter inline four-cylinder EFI engine, the F90JB produces strong jet-drive thrust while maintaining smooth operation, fuel efficiency, and long-term durability.

Features and Performance

• Jet Drive System (65 HP at the Pump) – Safe, prop-free operation in shallow and rocky waterways

• 1.8L Inline-4 SOHC Engine – Compact, lightweight design with strong midrange power

• Electronic Fuel Injection (EFI) – Reliable cold starts and consistent fuel efficiency

• Long-Track Induction System – Improved throttle response and smooth acceleration

• High-Output 35-Amp Alternator – Supports electronics and onboard accessories

• Power Trim & Tilt (Standard) – Precise control in changing water conditions

• Freshwater Flush Device – Easy maintenance without running the engine

• Phaze Five™ Anti-Corrosion System – Five-layer protection for harsh marine environments

Why You Should Buy It

The Yamaha F90JB Jet Outboard is the ideal solution for river runners, shallow-water anglers, and jet boat owners who want power without prop damage risk. Its combination of EFI efficiency, jet-drive safety, and Yamaha reliability makes it a top choice for demanding environments.

FAQ – Yamaha F90JB

How much power does the jet drive produce?
The F90JB produces 65 horsepower at the pump in jet-drive configuration.

Is this engine suitable for shallow rivers and rocky areas?
Yes. The jet drive design allows operation in very shallow and obstacle-filled waters.

Does the F90JB include Power Trim & Tilt?
Yes, Power Trim & Tilt is standard.

What fuel system does this outboard use?
It uses Electronic Fuel Injection (EFI).

What warranty is included?
This model includes a 2-year Yamaha factory warranty.