90 HP

4-Stroke Design

World-renowned Honda quality combines proven reliability and superior fuel efficiency, with no oil mixing

VTEC® – Smooth acceleration and power.

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 – Powerful performance

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® – Superior fuel efficiency

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 20% less fuel* than others in its class.
*Based on EPA Specific Fuel Consumption Mode.

BLAST® System – improves acceleration at low speeds

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 – gets you going faster

Designed to get you going faster, the BF90’s gearcase reduces drag, greatly reduces hull porpoise and minimizes spray, thus increasing acceleration and top speed.

    • iA longer anti-ventilation plate helps trap water flowing to the propeller to minimize porpoising
    • 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 – improved handling.

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 – max power

The BF90’s powerful 1.5L, 4-cylinder design utilizes a single overhead cam, and two intake valves to deliver maximum torque and power.

Legendary Honda Reliability

The technology we applied to our 90hp outboard engine is the very same that powers one of the most popular cars in the world, the Honda Fit.

3-Way Cooling System – Cool running durability

Three separate cooling systems keep the cylinder heads running cooler for long-term durability.

Engine Alert System – Keeps you informed

The Engine Alert System uses visual, audio and RPM reduction circuits to alert the operator of over-heating, low oil PSI and over-revving, preventing engine damage.

4-Front Corrosion Protection System – Fights the elements

The Corrosion Protection System is a patented “Double Sealed” multi-layered paint process. Sacrificial anodes and stainless steel technology, along with waterproof connectors, 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 – Protection for long life

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.

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.

True 5 Warranty

Honda’s True 5 Warranty is the best in the business. This transferable, non-declining warranty is the same on the last day as it is on the first.

Superior Battery Charging – More usable power

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 amps, it’s twice the output of some competitors. It provides high output and keeps battery banks charged all day, even when running multiple accessories.

Easy Maintenance

An easy “screw-type” valve adjuster system requires no shims, which reduces maintenance costs. Front-mounted oil filter and oil filler make for easy maintenance.

Center Mount Tiller – Easier control

The ergonomically designed tiller handle is longer for improved handling. Adjustments for throttle and steering friction allow easier control. Up front shift lever, PTT switch, and engine alert lamps provide added convenience.

Built-In Pitot Tube

Built-in pitot tube in the gear case eliminates the need to drill holes in your boat for installation.


Type 4-Stroke SOHC 4 Cylinder/16 Valves
Displacement 1,496 cc (91.4 cubic inches)
Bore & Stroke 73 mm x 89.4 mm (3.0 x 3.5 inches)
Full Throttle RPM Range 5,300-6,300 RPM
Rated Power 90 HP @ 5,800 RPM
Cooling System Water Cooled
Fuel Delivery Programmed Fuel Injection
Ignition System MicroComputer Programmed
Starting System Electric
Exhaust Through Hub
Lubrication Wet Sump
Trim Range -4° to +16°
Tilt Range 68°


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


Alternator (Electric Start) 44 Amp
Battery Charging Power 35 Amp
Propeller Optional
Power Tilt NA
Power Trim & Tilt Standard
Gas Assisted Tilt NA
Oil Pressure Alert Standard
Temperature Alert Standard
Rev-Limiter Standard
Speedometer Pickup Standard


Overall Width 480 mm/18.9 inches

Dry Weight

L-Type 163 kg/359 lbs.
X-Type 166 kg/365 lbs.

Transom Height

L Type 508 mm/20 inches
X Type 635 mm/25 inches

Owner’s Manuals

Serial Number Size P/N
BBBJ-1000001-4999999 Download Buy 3.66 MB 31ZW0600
BBBL-1000001-2999999 Download Buy 3.66 MB 31ZW0600
BBBL-3000001-3199999 Download Buy 4.07 MB 31ZW0601
BBBL-4000001-4199999 Download Buy 4.04 MB 31ZW0602
BBBL-4200001-4399999 Download Buy 3.58 MB 31ZW0603
BBBL-4400001-4409999 Download Buy 3.7 MB 31ZW0604
BBBL-4410001-4499999 Download Buy 2.18 MB 31ZW0605
BBBL-4500001-4599999 Download Buy 8.75 MB 31ZW0606
BBBL-4600001-4699999 Download Buy 9.48 MB 31ZW0607
BBBL-4700001-4799999 Download Buy 10.11 MB 31ZW0608
BBBL-4800001-9999999 Download Buy 8.94 MB 31ZW0610
BBBU-1000001-2999999 Download Buy 3.66 MB 31ZW0600
BBBU-3000001-4199999 Download Buy 4.04 MB 31ZW0602
BBCJ-1000001-1099999 Download Buy 5.66 MB 00X31ZY96100KIT
BBCJ-1100001-9999999 Download Buy 6.93 MB 00X31ZY96210KIT


Performance Test

Boat Length Prop
CEASAR P850 27′ – 0″ Precision 13 1/4 x 16 x 3
STUMPNOCKER 175 CC 17′ – 2″ Solas 13.2 x 19 x 3