Description
2020 Yamaha F9.9LMHB – Portable 9.9 HP Four-Stroke Outboard
The 2020 Yamaha F9.9LMHB is a compact, lightweight, and reliable four-stroke outboard designed for versatility and convenience. Powered by a smooth-running SOHC twin-cylinder engine, this model delivers dependable performance whether used as a primary motor for small vessels or as a kicker for larger boats.
Engine & Design
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Engine Configuration: 2-cylinder, Single Overhead Cam (SOHC), four-stroke, 212 cc displacement
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Power Output: 9.9 HP at approximately 5,500 RPM (propeller shaft rating)
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RPM Range (Wide Open Throttle): 5,000–6,000 RPM
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Fuel System: Carbureted design, maintaining ease of service and reliable delivery
Performance & Handling
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Lightweight Portability: Weighing in between 39 kg (87 lbs) and 42 kg (93 lbs) depending on shaft length, this engine is easy to transport and mount, making it ideal for tenders, inflatables, jon boats, and similar craft.
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Comfortable Steering: Equipped with a compact tiller handle, which folds or tucks in neatly for efficient storage and improved ergonomics.
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Easy Maintenance Features: Includes carrying handles, resting pads for protecting the cowl, and oil retention design for neat, upright storage.
Specifications Overview
| Feature | Details |
|---|---|
| Engine Type | 2-cylinder, SOHC, 4-stroke, 212 cc |
| Horsepower | 9.9 HP @ 5,500 RPM |
| RPM Range | 5,000–6,000 RPM |
| Weight | ~87–93 lbs (39–42 kg) |
| Shaft Length Options | 15″ and 20″—longer available on high-thrust versions |
| Alternator Output | 6 A at wide-open throttle |
| Gear Ratio | Approximately 2.08:1 |
| Compression Ratio | ~9.4:1 |
| Fuel Type | Regular unleaded gasoline (87 octane) |
| Ignition | CDI microcomputer |
| Lubrication | Wet sump system |
| Trim/Tilt Range | Tilt: 71° maximum; Trim: –4° to +16° |
| Warranty | 3-year pleasure, 3-year government, 1-year commercial |
Advantages & Ideal Use Cases
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Portable Powerhouse: Lightweight and easy to carry, it’s perfect for side-mount installation on small boats or use as a backup motor.
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Efficient & Responsive: The carbureted setup and CDI ignition ensure reliable starts and consistent running performance.
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Smart Design for Storage: Folding tiller and recessed handles optimize storage space and carry convenience.
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Built for Reliability: Durable construction, Yamaha’s 3-year warranty, and simple maintenance features make it a trusted engine for recreation and work alike.
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Versatility: Ideal for inflatables, dinghies, jon boats, tenders, and shallow-water operations. Also useful as a kicker for multi-species fishing rigs.
Summary
The 2020 Yamaha F9.9LMHB is a compact, powerful four-stroke outboard that excels in versatility, transportability, and performance. From its easy-carry design to straightforward maintenance and extended warranty, this engine delivers dependable power for small-vessel skippers and serious boaters seeking a reliable backup.
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