



2018 Yamaha F70 Midrange Mechanical 20 F70LA Outboard Motor
$10,000.00
The 2018 Yamaha F70LA is a midrange outboard that redefines what a 70-horsepower four-stroke can be. This 4-cylinder, 996cc SOHC outboard produces 70 HP at 5,800 RPM, configured with remote mechanical controls, electric start, power trim & tilt, and a 20-inch long shaft — making it an outstanding match for aluminum fishing boats, center console skiffs, and inshore craft across California and the United States.


2018 Yamaha F70 Midrange Mechanical 20 F70LA Outboard Motor
$10,000.00
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Description
The F70LA is built around Yamaha’s 996cc single-overhead-camshaft four-cylinder powerhead — a 1.0-litre, 16-valve design that provides exceptional breathing and efficiency. This is the same basic engine platform as Yamaha’s popular 50 and 60 HP models, but with increased output .
The Precision Multi-Point Electronic Fuel Injection system delivers the exact amount of fuel needed for optimum performance and efficiency, with Yamaha’s EFI optimizing fuel atomization for enhanced fuel economy. The TCI microcomputer ignition adjusts timing to maintain optimal engine performance, economy, and power under all operating conditions.
The composite intake manifold features long tube intake tracks, tuned to increase airflow, which boosts low-end and midrange torque. The air silencer box and surge tank reduce air intake noise and air turbulence for smooth, quiet operation.
Yamaha’s Phaze Five™ electro-deposited anti-corrosive paint system, combined with their proprietary YDC-30 alloy, provides a tough, five-layer barrier against corrosion. The Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.
The Power Trim and Tilt system provides a trim range of -4° through +16° with a 69° tilt range, bringing the bow of the boat up for better hole shot, top speed, and a smoother ride. The Engine Warning System protects the outboard with overheat protection, low-oil-pressure warning, over-rev protection, water-in-fuel detection, start-in-gear protection, and shift-in prevention at open throttle.
| Specification | Value |
|---|---|
| Model | Yamaha F70LA |
| Year | 2018 |
| Engine Type | SOHC In-Line 4-Cylinder, 4-Stroke |
| Displacement | 996 cc (60.8 in³) |
| Bore × Stroke | 65 × 75 mm (2.56 × 2.95 in) |
| Compression Ratio | 9.4:1 |
| Maximum Output | 70 HP (52.2 kW) @ 5,800 RPM |
| Operating Range | 5,300–6,300 RPM |
| Fuel System | Multi-Point Electronic Fuel Injection (EFI) |
| Starting System | Electric |
| Ignition System | TCI Microcomputer |
| Gear Ratio | 2.33:1 |
| Transom Height | 20 inches (Long) |
| Dry Weight | 253 lbs (115 kg) |
| Alternator Output | 12V 15 Amp |
| Trim System | Power Trim & Tilt |
| Steering | Remote Mechanical Controls |
| Recommended Oil | Yamalube® 4M |
| CARB Rating | 3-Star Ultra-Low Emission |
| Warranty | 3-Year Limited Pleasure |
The 70-75 HP outboard segment is competitive, with strong offerings from Mercury 75 Optimax, Suzuki DF70, and Honda BF75. Here’s how the F70LA compares on the specifications that matter:
| Feature | Yamaha F70LA | Mercury 75 | Suzuki DF70 | Honda BF75 |
|---|---|---|---|---|
| Displacement | 996 cc | 1,526 cc | 1,502 cc | 1,496 cc |
| Engine Type | SOHC 4-Cyl | 2-Stroke DFI | DOHC 4-Cyl | SOHC 4-Cyl |
| Weight | 253 lbs | 359 lbs | 342 lbs | 357 lbs |
| Fuel System | EFI | Direct Injection | EFI | EFI |
| Warranty | 3-Year | 3-Year | 3-Year | 3-Year |
The F70LA’s massive weight advantage is its defining characteristic — at 253 lbs, it is over 100 pounds lighter than the Suzuki DF70 and Honda BF75 . This weight savings translates to better boat balance, improved shallow-water performance, and easier trailering. In independent testing by BOOTE Magazine, the F70LA demonstrated the lowest fuel consumption at full load of any engine in its class, consuming just 0.36 L/km .
Independent performance testing on an Avid 18 Commander with the F70LA provides real-world fuel economy and speed data :
| RPM | Speed (MPH) | Fuel (GPH) | Efficiency (MPG) |
|---|---|---|---|
| 1000 | 3.8 | 0.3 | 12.50 |
| 1500 | 5.0 | 0.6 | 8.25 |
| 2000 | 7.4 | 1.2 | 6.43 |
| 2500 | 9.3 | 1.5 | 6.20 |
| 3000 | 14.8 | 2.1 | 7.20 |
| 3500 | 19.4 | 2.4 | 8.08 |
| 4000 | 23.8 | 2.6 | 9.13 |
| 4500 | 27.8 | 3.5 | 8.06 |
| 5000 | 30.5 | 4.2 | 7.25 |
| 5500 | 34.0 | 5.4 | 6.36 |
| 6000 | 39.1 | 6.6 | 5.92 |
0-20 MPH acceleration: 6.31 seconds . Peak fuel efficiency occurs around 4000 RPM, delivering 9.13 MPG. In European testing (2 persons), the F70 achieved a top speed of 30.8 knots with fuel consumption of 23.0 L/hr at 6100 RPM .
The F70LA is well-suited to a wide range of American boating applications:
Aluminum fishing boats — the 20″ shaft and remote controls make it ideal for serious anglers
Center console skiffs — reliable power for inshore fishing
Bay boats — the lightweight design improves shallow-water capability
Pontoon boats — the 996cc powerhead handles light pontoon duty
The engine features a single throttle valve that ensures the precise amount of air necessary for optimum power and fuel efficiency. The labyrinth exhaust system reduces engine noise at low RPM and idle, with a water-sealed outer wall around the exhaust muffler for whisper-quiet operation. The magnetic drain plug located in the lower unit removes metal particles from the gear oil and prevents gearcase damage.
All motors ship from our San Francisco, CA warehouse with fast nationwide shipping. California residents pay applicable sales tax; out-of-state buyers receive straightforward delivery to their doorstep.
2018 Yamaha F70LA outboard motor (20″ shaft)
Remote control box and harness
Power Trim & Tilt system
Fuel tank and quick-connect fuel line
Aluminum propeller
Tool kit
Owner’s manual
Yamaha 3-Year Manufacturer Warranty
Complete your installation with these compatible components and services:
Yamaha outboard motor propellers — pitch options for optimal performance
Yamalube 4M engine oil — the recommended oil for your F70
Yamaha 10-micron fuel/water separating filter — protects your EFI system
Zinc anode kit for Yamaha F70LA — protect against saltwater corrosion
Yamaha outboard motor flusher — essential for post-saltwater flushing
Boatworld foldable outboard engine trolley — safe storage and transport
Outboard motor service kit — impeller, spark plugs, and fuel filters
Boatworld heavy duty outboard lock — security for your investment
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SKU: YAM-F70LA-2018-20
MPN: F70LA
Brand: Yamaha Marine
Category: Outboard Motors > Midrange (30–90 HP)






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