Yamaha Outboards 90HP Jet | F90JB

Yamaha F90JB 90 HP Jet Drive 4-Stroke Outboard Motor: Master Extreme Shalllows with Power

The Yamaha Outboards 90HP Jet | F90JB.

Are you, by any chance, searching for a powerful outboard motor specifically designed for the toughest shallow-water conditions? One that eliminates propeller concerns, offers precise remote control, and features convenient electric starting with full power trim and tilt?

hop the Yamaha F90JB 90HP (65HP pump) Jet Drive 4-stroke outboard with 25″ shaft, EFI & power trim/tilt. Ideal for shallow water, rivers & larger boats. Order now!

The Yamaha F90JB 90 HP Jet Drive 4-Stroke Outboard Motor is your ultimate solution. This 90 horsepower engine (65 HP at the jet pump), indeed, stands as a robust option within Yamaha’s specialized Jet Drive series. It allows you to navigate rivers, shoals, and debris-laden waters with unmatched freedom. It boasts an extended 25-inch shaft, efficient Electronic Fuel Injection (EFI), and full power trim and tilt.

Consequently, it makes an exceptional power plant for larger jon boats, aluminum fishing boats, and work skiffs. Crucially, the F90JB combines formidable thrust and user-friendliness with Yamaha’s legendary four-stroke efficiency and durability. It ensures quiet, fuel-efficient operation and long-term reliability.

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Why the F90JB Jet Drive Excels: Prop-Free Design, Agile Control, and EFI Performance

For boaters who consistently face extremely shallow water, rocky rivers, or debris-filled environments, the Yamaha F90JB Jet Drive, in fact, stands out as a true game-changer. Primarily, its jet drive design means no propeller extends below the hull. Therefore, this completely eliminates the risk of prop damage on submerged obstructions.

Furthermore, it significantly enhances safety around swimmers. Moreover, the jet drive system offers exceptional maneuverability. It allows you to pivot and turn in tight spaces with ease. This is a crucial advantage in tricky channels and dense waterways. In addition, Yamaha’s Electronic Fuel Injection (EFI) system delivers clean, efficient power. It ensures reliable starts and smooth acceleration across the RPM range.

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Why the F90JB Jet Drive Excels (Continued)

Beyond that, the 25-inch long shaft (X-length) allows optimal mounting on boats with higher transoms. This ensures consistent water intake for the powerful jet pump. Finally, the integrated power trim and tilt system offers effortless engine raising and lowering. Naturally, this simplifies operation in varying depths, trailering, and fine-tuning trim for optimal performance. Therefore, the F90JB consistently delivers powerful, dependable, and worry-free performance, year after year, even in the most challenging conditions.

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Core Features of Your Yamaha F90JB 90 HP Jet Drive Outboard

Jet Drive Propulsion System

The F90JB’s defining characteristic is its jet drive lower unit. This system, for example, draws water into a pump. Then, it expels this water at high velocity. This creates thrust without an external propeller. This prop-free design, consequently, allows navigation in extremely shallow water. It effectively eliminates worries about hitting rocks, logs, or other unseen obstacles.

Optimized for Shallow Water Power

This 90 HP powerhead produces a robust 65 HP at the jet pump. Specifically, Yamaha engineered it for substantial torque and thrust in shallow water. It ensures excellent hole shot and maneuverability, even with heavy loads.

Responsive 1.8-Liter In-Line 4 Engine

The F90JB features a 1.8-liter, In-Line 4-cylinder, single-overhead-camshaft (SOHC) engine. This design, therefore, provides a compact, lightweight, and space-saving powerhouse. It delivers ultra-smooth, usable power with low noise and vibration levels.

Electronic Fuel Injection (EFI)

The F90JB utilizes Electronic Fuel Injection. This advanced system ensures precise fuel delivery. It provides easy starts, smooth idling, and outstanding fuel efficiency across all RPMs. Furthermore, EFI minimizes emissions and reduces maintenance requirements.

Lightweight and Compact Design

Weighing approximately 354 pounds (161 kg), the F90JB offers a strong power-to-weight ratio for a jet drive of its class. This lighter weight, consequently, reduces transom stress and enhances boat performance.

Extra-Long (25-inch) Shaft

The “B” in F90JB specifies a 25-inch shaft length. This makes it ideal for many larger shallow-water boats with higher transoms. It ensures the jet intake remains sufficiently submerged for optimal performance, even in choppy water.

Electric Start

The F90JB includes electric start for convenient push-button ignition. This provides effortless starting, allowing quick water access.

Power Trim and Tilt

The “B” in F90JB indicates full Power Trim and Tilt. This essential feature lets you conveniently adjust the engine’s angle with a simple button press. Indeed, this is perfect for shallow water operation, clearing debris, beaching, or fine-tuning the boat’s running attitude for optimal performance. It offers a wide trim range, including negative trim, for quicker planing.

Remote Mechanical Control

The F90JB operates via remote mechanical control. Specifically, this connects to a control box at your boat’s helm or console. This provides precise throttle, shift, and steering control for a more comfortable and integrated boating experience.

High Output Alternator

Equipped with a 35-amp alternator, the F90JB generates ample power. It keeps your boat’s battery charged. Furthermore, it runs essential electronics, lights, and other accessories, even during extended idling or slow speeds.

Durable and Reliable Construction

Yamaha built the F90JB with legendary quality. It features a robust design. This includes, for example, electronic fuel injection, a microcomputer-controlled ignition, and a wet sump lubrication system. Yamaha’s exclusive Phaze Five™ anti-corrosive paint system provides a tough, five-layer barrier against corrosion. Yamaha engineered it to withstand rigorous use in challenging environments. It provides years of trouble-free operation.

Freshwater Flushing Device

A convenient freshwater flushing device is integrated into the engine. This allows you to easily flush salt and debris from the cooling passages without running the engine. Consequently, this significantly extends your outboard’s lifespan, especially after saltwater use.

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Perfect Applications for Your F90JB Jet Drive Outboard

The Yamaha F90JB is specifically engineered for a range of demanding shallow-water marine applications:

• Larger Jon Boats & Aluminum Fishing Boats: Indeed, it is an ideal power choice for these vessels. It allows access to skinny backwaters, rocky rivers, and shallow flats where propeller boats cannot go. This is particularly true for heavier or longer models.
• Shallow-Draft Work Skiffs: It provides essential power and maneuverability for work skiffs. These are used in extremely shallow estuaries, marshes, and river deltas for commercial or industrial tasks.
• River Boats: It’s the motor of choice for navigating rivers with varying depths, rapids, and unseen obstacles, offering both power and agility.
• Deck Boats and Deep-V Hulls in Rivers: Moreover, its design makes it suitable for these boat types when navigating shallow, rocky rivers where traditional props would be vulnerable.
• Hunting & Fishing in Remote Areas: For anglers and hunters who venture into remote, hard-to-reach shallow areas, the F90JB opens up new possibilities. This is especially useful when carrying heavy gear.

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Yamaha Outboards 90HP Jet | F90JB Unwavering Commitment to Quality and Specialized Performance

Choosing a Yamaha Jet Drive outboard means more. You’re not just purchasing an engine. Instead, you’re investing in a specialized power solution. It’s built for unique and challenging marine environments. Yamaha’s legendary reliability and innovative engineering back it. The F90JB truly embodies Yamaha’s dedication. It focuses on providing exceptional shallow-water capability, superior maneuverability, and outstanding fuel efficiency. Notably, it holds a 3-Star C.A.R.B. rating. This indicates ultra-low emissions, making it an environmentally conscious choice.

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Technical Specifications (Approximate – Always Verify with Official Yamaha Resources)

• Engine Type: In-Line 4-Cylinder, SOHC, Four-stroke
• Horsepower (Powerhead): 90 HP
• Horsepower (at Jet Pump): 65 HP @ 5500 RPM
• Displacement: 1.8 L (1832 cc / 111.8 ci)
• Bore x Stroke: 81 x 88.9 mm (3.19 x 3.5 in)
• Starting System: Electric
• Steering: Remote Mechanical Control
• Shaft Length: 25 inches (Extra-Long Shaft)
• Trim & Tilt System: Power Trim & Tilt
• Lubrication: Wet Sump
• Fuel Induction: EFI (Electronic Fuel Injection)
• Ignition System: TCI Microcomputer
• Alternator Output: 35 Amps (Gross)
• Gear Ratio: Direct Drive (Jet Pump)
• Full Throttle RPM Range: 5000 – 6000 RPM
• Recommended Fuel: Minimum Octane 87 (Regular Unleaded)
• Engine Oil Capacity: 2.1 L (2.2 US qt)
• Recommended Fuel Filtration: Yamaha 10-Micron Fuel/Water Separating Filter (external)
• Weight (approx.): 354 lbs (161 kg)
• C.A.R.B. Rating: 3-Star (Ultra Low Emission)
• Propeller: Jet Pump (no conventional propeller)
• Gear Shift: Forward, Neutral, Reverse
• Variable Trolling RPM (VTS®): Optional (with compatible remote controls/gauges)
• Steering Angle: 40° from center, either direction

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Ready to explore new territories and navigate the most challenging shallow waters with powerful confidence? Upgrade to the Yamaha F90JB 90 HP Jet Drive 4-Stroke Outboard Motor today. Discover the difference. Experience smooth, reliable electric starts, incredible shallow-water capability, and precise remote control with power trim and tilt. All these features optimize your demanding boating adventures. Ultimately, make your next outing truly limitless and efficient.