Honda BF90DK5XRTC Outboard Motor

Performance and Efficiency

• Four-Stroke Design: World-renowned Honda quality combines proven reliability and superior fuel efficiency with no oil mixing.
• Lightweight: Weighing in at only 163 kg (359 lbs), the BF90 is one of the lightest in its class.
• VTEC®: Honda’s Variable Valve Timing & Lift Electronic Control (VTEC®) system® provides power where and when you need it. VTEC® gives you a broader, flatter torque curve and smooth power delivery throughout the engine’s operating range. The result is a superior combination of power, torque, and fuel economy. VTEC® is the modern replacement for displacement.
• Programmed Fuel Injection (PGM-FI®): Programmed Fuel Injection delivers the precise amount of fuel/air to each cylinder. The result is easy starts and instant throttle response with superior fuel efficiency.
• Lean Burn Control®: Lean Burn Control® increases fuel efficiency by allowing combustion to operate on a leaner air/fuel mixture. At cruising speed, this engine runs on up to 10% less fuel than others in its class.
• BLAST® System: Boosted Low Speed Torque, or BLAST®, improves acceleration at low speeds. A quick movement of the throttle control activates the BLAST® system, advancing the ignition curve aggressively. “Hole Shot” is vastly improved as more horsepower gets the hull up on plane quicker.
• High Performance Gearcase: Designed to get you going faster, this gearcase reduces drag, greatly reduces hull porpoise, and minimizes spray, thus increasing acceleration and top speed. Featuring: A longer anti-ventilation plate helps trap water flowing to the propeller to minimize proposing, while a streamlined front and longer bullet reduce drag for enhanced acceleration and fuel efficiency; a front splash plate reduces spray from the hull bottom, maintaining a dry deck above. And a 2.33:1 gear ratio affords the use of 13- to 14-inch-diameter propellers for heavier loads. Torsion Dampener: Sometimes called a flywheel, it is located near the base of the powerhead. This design lowers the center of gravity for improved handling. SOHC 4-Valve/Cyl. Design: The BF90’s powerful 1.5-liter, 4-cylinder design utilizes a single overhead cam and two intake valves to deliver maximum torque and power.

Reliability and Durability

• Legendary Honda Reliability: The technology we applied to our 90-hp outboard engine is the very same that powers one of the most popular cars in the world, the Honda Fit.
• 3-way Cooling System: Three separate cooling systems keep the cylinder heads cooler for long-term durability.
• Engine Alert System: The Engine Alert System uses visual, audio, and RPM reduction circuits to alert the operator of overheating, low oil PSI, and overrevving, preventing engine damage.
• Corrosion Protection System: The Corrosion Protection System is a patented “Double Sealed” multi-layered paint process. Sacrificial anodes and stainless steel technology, along with waterproof coectors, all enhance corrosion protection.
• Top-Mounted Electronics: The alternators, ignition, and other critical electrical components are mounted near the top of the powerhead to stay cool and dry. The result? Dependable performance.
• Sealed Starter: The starter motor is inverted into a sealed chamber that protects the starter drive from the elements.
• Positive Lubrication: A crankshaft-driven, automotive-style trochoid oil pump ensures long-term durability of critical engine components.
• Fresh Water Flushport: Flushes debris and saltwater out of the engine, extending the life of the outboard.
• Ultra Low 3-Star CARB Emissions: Environmentally conscious technology. All Honda Marine engines exceed the highest CARB 3-Star rating to meet the rigorous California Air Resource Board’s standards.
• Warranty: As a testament to their quality and reliability, all Honda engines come with a three-year, non-declining, non-commercial warranty or a one-year commercial warranty.

Convenience and Ease of Use

• Superior Battery Charging: There’s always plenty of electric power with Honda’s exclusive neodymium magnet flywheel. The alternator develops 44 amps in total and 35 amps of charging; it’s twice the output of some competitors. It provides high output and keeps battery banks charged all day, even when ruining multiple accessories.
• Easy Maintenance: An easy “screw-type” valve adjuster system requires no shims, which reduces maintenance costs. A front-mounted oil filter and oil filler make for easy maintenance.
• Built-in Pitot Tube: Built-in pitot tube in the gear case eliminates the need to drill holes in your boat for installation.

Engine

• Type: 4-Stroke SOHC, VTEC; 4 Cylinders/16 Valves
• Displacement: 91.4 cubic in. (1,496 cc)
• Bore & Stroke: 2.87 x 3.52 in. (73 mm x 89.4 mm)
• Full Throttle RPM Range: 5,300–6,300 RPM
• Propshaft Rated Horsepower: 90 HP @ 5,800 RPM
• Cooling System: Water Cooled
• Fuel Delivery: Programmed Electronic Fuel Injection (PGM-FI)
• Recommended Fuel: Unleaded Gas. (Min. Pump Octane 86)
• Ignition System: Microcomputer-Programmed
• Starting System: Electric
• Exhaust: Through Prop Hub
• Lubrication: Wet Sump
• Recommended Oil: SAE 10W30 API service classification SJ or later
• Oil Capacity: 4.40 L (3.90 Imp. qt.) with oil filter replacement.
• Trim Range: -4 deg. to +16 deg.
• Tilt Range: 68 deg.
• Steering Angle: 30 deg.

Drive

• Gear Ratio: 2.33:1
• Gear Shift: F-N-R

Equipment

• Alternator: 44 amp
• Battery Charging Power: 35 amp
• Power Trim & Tilt: Standard
• Oil Pressure Alert: Standard
• Over Rev-Limiter: Standard
• Temperature Alert: Standard
• Water in Fuel Alert: Standard
• Battery Condition Alert: Standard
• Speedometer Pickup: Standard
• Variable Speed Trolling Kit: Optional

Dimensions

• Overall Width: 17.7 in. (449 mm)
• Transom Height: 25 in. (635 mm)

Dry Weight

• XRTC-Type: 373 lbs. (169 kg)

Warranty

• Standard Warranty: As a testament to their quality and reliability, all Honda marine engines come with a warranty of 36 months for non-commercial use and 12 months for commercial use.
• Honda Plus Extended Warranty: Honda Plus extended warranty is now available for your marine engine. You can prolong your worry-free pleasure on specified parts and components even further.