Name: Yamaha 90HP Jet Outboard F90JB
Brand: Yamaha
SKU: NM393095136
Price: 7830.00 USD
Availability: InStock

Description

Overview 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.

Specifications

Specification	Details
Engine Type	Yamaha F90JB Jet Four Stroke
Jet Output Power	65 HP
Cylinders	4
Displacement	1.8 L
Fuel System	Electronic Fuel Injection (EFI)
Shaft Length	25 in (X-Long)
Steering	Remote Mechanical
Starting System	Electric
Trim System	Power Trim & Tilt
Trim Range	-4° to +16°
Full Throttle RPM	5000 – 6000 rpm
Alternator Output	35 amp
Weight	354 lbs
Warranty	2-Year Manufacturer Warranty (Yamaha)

What’s Included

Yamaha 90HP Jet Outboard F90JB
Jet Lower Unit
Power Trim & Tilt System
Steering Link Arm
Owner’s Manual

FAQ

Frequently Asked Questions About Yamaha 90HP Jet Outboard F90JB

What stands out about the powerhead on Yamaha 90HP Jet Outboard F90JB?

At its core, The Yamaha 90HP Jet Outboard F90JB uses a 1.8 L four-cylinder four-stroke engine with Electronic Fuel Injection (EFI), but the row also states 65 HP jet output instead of quoting only a propeller-style rating. That gives buyers a clearer picture of how the jet setup is being presented.

What does the shaft and control setup mean?

The row combines a 25 in (X-Long) shaft, Remote Mechanical steering, Electric start, and Power Trim & Tilt, which gives buyers a practical snapshot of how this motor is meant to be operated. Between the shaft length, steering style, and starting method, it is easier to separate this version from others in the same horsepower range.

How much charging support does this engine provide?

The row lists 35 amp alternator output, which adds useful context beyond power and displacement. For many buyers, that figure helps explain how well this engine can support normal electrical demand while underway.

What do the supplied components tell you about this motor?

The included list adds practical context because it names Jet Lower Unit, Power Trim & Tilt System. That helps buyers see equipment tied directly to this version instead of inferring the setup from the headline alone.

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