2018 Yamaha F20SEA 20HP | Electric-Start Portable Power with Remote Helm Control
$11,650.00
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Description
The 2018 Yamaha F20SEA brings the convenience of electric starting and remote helm controls to Yamaha’s legendary portable outboard platform. At just 113 pounds , this 20-horsepower four-stroke delivers the effortless starting and helm-mounted operation that serious anglers and small-craft owners demand. Powered by a 362cc SOHC inline-two-cylinder engine with CDI Microcomputer Ignition and an acceleration pump for responsive throttle, the F20SEA is the perfect powerplant for aluminum fishing boats, tenders, and inflatables where reliability and ease of use are paramount . To browse our complete inventory of new outboard motors, explore our showroom selection.
(H2) Electric-Start Convenience Meets Remote Helm Control
───────────────────────────────────────────────────
The “SEA” designation identifies this as the electric-start (S) with remote mechanical controls (E) and a 15-inch shaft (A) . While the manual-start F20SMHA relies on the pull cord, the F20SEA delivers the push-button starting convenience that transforms small-boat operation. The remote mechanical control box integrates seamlessly with your helm, providing smooth shift and throttle operation without the need for a tiller handle .
The heart of the F20SEA is its 362cc, two-cylinder SOHC engine—the same displacement that has made Yamaha’s 20hp class the standard for portable four-stroke performance . Featuring a two-valve-per-cylinder design, the engine delivers better breathing and more power than many competing portables in its class . The CDI Microcomputer Ignition system monitors throttle position, engine speed, and atmospheric conditions to precisely adjust ignition timing under all conditions, ensuring smooth and reliable operation . For those seeking additional value, our certified pre-owned outboard motors undergo rigorous inspection and offer warranty-backed confidence.
(H3) Key Features & Technical Benefits
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Electric Starting System
The 10-amp alternator ensures reliable starting while maintaining battery charge . The electric start is complemented by an engine stop switch lanyard for safety .
EFI Fuel Induction
The F20SEA features Electronic Fuel Injection (EFI) for precise fuel delivery, first-time hot and cold starting, and improved fuel efficiency . This represents an upgrade over the carbureted F20SMHA .
Responsive Acceleration Pump
An acceleration pump gives the engine the fuel it needs—when it needs it—during rapid throttle advance, ensuring responsive acceleration .
45-Degree Steering Angle
Exceptional maneuverability with a 45-degree steering angle in each direction makes docking and tight-quarters handling a breeze .
Ultimate Corrosion Protection
Yamaha’s proprietary YDC-30 alloy combined with the Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion—standard on all Yamaha Portable four-stroke outboards .
Freshwater Flush Device
An integrated Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life .
Engine Warning System
Protects the outboard with overheat protection, low-oil-pressure warning (automatically reducing maximum RPM to 2000), over-rev protection, start-in-gear protection, and shift-in prevention at open throttle .
(H2) Technical Specifications
───────────────────────────────────────────────────
This table provides a clear, scannable overview of the engine’s technical details based on manufacturer specifications .
| Specification | Detail | Specification | Detail |
|---|---|---|---|
| Horsepower | 20 HP @ 5500 RPM | Engine Type | Inline-2, SOHC, 4-Stroke |
| Displacement | 362 cc (22.1 ci) | Full Throttle RPM Range | 5000 – 6000 RPM |
| Bore x Stroke | 63mm x 58.1mm | Compression Ratio | 9.3:1 |
| Shaft Length | 15″ (SEA model) | Fuel Induction | EFI |
| Starting System | Electric | Ignition System | CDI Microcomputer |
| Steering | Remote Mechanical | Gear Shift | Forward, Neutral, Reverse |
| Alternator Output | 10 Amp | Dry Weight | 113 lbs (52 kg) |
| Gear Ratio | 2.08:1 (27:13) | Exhaust | Through Propeller |
| Oil Capacity | 1.8L with filter / 1.6L without | Recommended Oil | Yamalube® 4M |
| Trim System | Manual, -4° through +16° | Degree of Tilt | 67° |
| Fuel | 87 Octane (10% Ethanol Max) | Cooling | Thermostatic Control |
| CARB Rating | 3-Star | Warranty | 3-Year Pleasure |
(H2) Recommended Companions
───────────────────────────────────────────────────
To maximize the performance and longevity of your Yamaha F20SEA, consider pairing it with these essential accessories, available through our propellers, fuel systems, and maintenance kits section:
-
Yamalube® 4M Marine Engine Oil: The factory-recommended oil for optimal protection and performance
-
Yamaha Mini 10-Micron Fuel/Water Separating Filter: Essential for protecting the EFI system from ethanol-related issues and water contamination
-
Remote Mechanical Control Box: The appropriate control box with cables for smooth shift and throttle operation
-
Command Link® Gauge System: For real-time data on RPM, fuel economy, and engine diagnostics
(H2) Popular Searches
───────────────────────────────────────────────────
Customers who viewed the 2018 Yamaha F20SEA are also searching for:
-
Yamaha F20SMHA manual-start portable outboard
-
Yamaha F25 electric-start outboard
-
Yamaha F9.9 electric-start outboard
-
Tohatsu 20hp electric-start outboard
-
Remote control box for Yamaha F20
-
Aluminum fishing boat motor packages
For expert guidance on selecting the ideal engine for your vessel, consult the BoatUS Outboard Motor Buying Guide (nofollow), which offers comprehensive advice on matching outboard specifications to your specific boating needs.
(H2) Service & Support at Aqua Marine Outboard
───────────────────────────────────────────────────
Our commitment extends beyond just selling premium outboards. We are your full-service marine partner, and we make ownership accessible through our flexible financing options tailored to your budget. Our factory-trained technicians provide everything from routine maintenance and winterization to complex diagnostics and repairs.
Visit Our Showroom: Stop by at 1428 Wallace Ave, San Francisco, CA 94124 or call +1 (415) 882-6361 to speak with a marine specialist. For official documentation and to verify OEM specifications, you can also refer to the Yamaha Outboards Official Website (nofollow) and the Yamaha Genuine Parts & Accessories (nofollow) pages.
(H2) Frequently Asked Questions (FAQ)
───────────────────────────────────────────────────
Q: What does the “SEA” designation mean on the Yamaha F20?
A: The “SEA” indicates this is the electric-start, remote mechanical control version with a 15-inch (short) shaft . The “S” stands for electric start, “E” for remote mechanical controls, and “A” for the 15-inch shaft length.
Q: What is the dry weight of the 2018 Yamaha F20SEA?
A: The 15-inch shaft model weighs 113 pounds (52 kg), slightly heavier than the manual-start version due to the electric starter and battery .
Q: What type of fuel induction does the F20SEA use?
A: The F20SEA features Electronic Fuel Injection (EFI) for precise fuel delivery and reliable starting. This differs from the carbureted F20SMHA .
Q: Can the F20SEA be used with a tiller handle instead of remote controls?
A: While the F20SEA is designed for remote helm control, the portable design allows for conversion to tiller operation with additional parts .
Q: What is the ethanol limit for this engine?
A: Yamaha recommends a maximum ethanol blend of 10% for this EFI engine. Using an external Yamaha Mini 10-Micron Fuel/Water Separating Filter is strongly advised to protect the fuel system.
Q: Does the F20SEA have power trim and tilt?
A: No, the F20SEA features manual trim with 4 positions and manual tilt up to 67°. Power tilt is not offered on this portable model .
COPYWRITING COMPETITION ENTRY: 2018 YAMAHA F20SEA PORTABLE ES
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PRIMARY KEYWORD RESEARCH ANALYSIS
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This analysis prioritizes high-value search terms based on commercial intent, technical specificity, and user behavior patterns for this electric-start portable outboard motor.
| Keyword Type | Target Keywords | Search Intent & Strategy |
|---|---|---|
| Primary Keyword | 2018 Yamaha F20SEA outboard for sale |
High commercial intent. Targets buyers specifically searching for this electric-start remote control model |
| Secondary Keywords | Yamaha 20hp electric start outboard, F20SEA 15-inch shaft, Yamaha portable remote control outboard |
Supporting keywords that build topical authority and capture remote-control category searches |
| Long-Tail Keywords | Yamaha F20SEA for aluminum fishing boat, 20hp EFI portable outboard, Yamaha F20SEA remote mechanical controls |
Niche, high-conversion queries from owners of small craft requiring electric start and remote helm control |
| LSI Keywords | 362cc SOHC 2-cylinder, CDI Microcomputer Ignition, YDC-30 alloy, Phaze Five paint, acceleration pump |
Related technical terms that demonstrate expertise and enhance content depth |
Keyword Strategy: The primary keyword targets the motivated buyer with a specific model in mind. Secondary and long-tail keywords capture boaters who demand the convenience of electric starting and remote helm controls for their aluminum fishing boats, tenders, and inflatables . LSI keywords demonstrate technical depth and establish authority with the informed marine audience.
META DESCRIPTION
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Find the 2018 Yamaha F20SEA 20HP electric start outboard—a 362cc portable four-stroke with EFI, remote mechanical controls, and a 15″ shaft. Perfect for aluminum boats and inflatables. Shop at Aqua Marine Outboard.
PRODUCT DESCRIPTION: 2018 YAMAHA F20SEA 20HP PORTABLE ELECTRIC START
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(H1) 2018 Yamaha F20SEA 20HP | Electric-Start Portable Power with Remote Helm Control
═══════════════════════════════════════════════════════════════════
The 2018 Yamaha F20SEA brings the convenience of electric starting and remote helm controls to Yamaha’s legendary portable outboard platform. At just 113 pounds , this 20-horsepower four-stroke delivers the effortless starting and helm-mounted operation that serious anglers and small-craft owners demand. Powered by a 362cc SOHC inline-two-cylinder engine with CDI Microcomputer Ignition and an acceleration pump for responsive throttle, the F20SEA is the perfect powerplant for aluminum fishing boats, tenders, and inflatables where reliability and ease of use are paramount . To browse our complete inventory of new outboard motors, explore our showroom selection.
(H2) Electric-Start Convenience Meets Remote Helm Control
───────────────────────────────────────────────────
The “SEA” designation identifies this as the electric-start (S) with remote mechanical controls (E) and a 15-inch shaft (A) . While the manual-start F20SMHA relies on the pull cord, the F20SEA delivers the push-button starting convenience that transforms small-boat operation. The remote mechanical control box integrates seamlessly with your helm, providing smooth shift and throttle operation without the need for a tiller handle .
The heart of the F20SEA is its 362cc, two-cylinder SOHC engine—the same displacement that has made Yamaha’s 20hp class the standard for portable four-stroke performance . Featuring a two-valve-per-cylinder design, the engine delivers better breathing and more power than many competing portables in its class . The CDI Microcomputer Ignition system monitors throttle position, engine speed, and atmospheric conditions to precisely adjust ignition timing under all conditions, ensuring smooth and reliable operation . For those seeking additional value, our certified pre-owned outboard motors undergo rigorous inspection and offer warranty-backed confidence.
(H3) Key Features & Technical Benefits
───────────────────────────────────────────────────
Electric Starting System
The 10-amp alternator ensures reliable starting while maintaining battery charge . The electric start is complemented by an engine stop switch lanyard for safety .
EFI Fuel Induction
The F20SEA features Electronic Fuel Injection (EFI) for precise fuel delivery, first-time hot and cold starting, and improved fuel efficiency . This represents an upgrade over the carbureted F20SMHA .
Responsive Acceleration Pump
An acceleration pump gives the engine the fuel it needs—when it needs it—during rapid throttle advance, ensuring responsive acceleration .
45-Degree Steering Angle
Exceptional maneuverability with a 45-degree steering angle in each direction makes docking and tight-quarters handling a breeze .
Ultimate Corrosion Protection
Yamaha’s proprietary YDC-30 alloy combined with the Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion—standard on all Yamaha Portable four-stroke outboards .
Freshwater Flush Device
An integrated Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life .
Engine Warning System
Protects the outboard with overheat protection, low-oil-pressure warning (automatically reducing maximum RPM to 2000), over-rev protection, start-in-gear protection, and shift-in prevention at open throttle .
(H2) Technical Specifications
───────────────────────────────────────────────────
This table provides a clear, scannable overview of the engine’s technical details based on manufacturer specifications .
| Specification | Detail | Specification | Detail |
|---|---|---|---|
| Horsepower | 20 HP @ 5500 RPM | Engine Type | Inline-2, SOHC, 4-Stroke |
| Displacement | 362 cc (22.1 ci) | Full Throttle RPM Range | 5000 – 6000 RPM |
| Bore x Stroke | 63mm x 58.1mm | Compression Ratio | 9.3:1 |
| Shaft Length | 15″ (SEA model) | Fuel Induction | EFI |
| Starting System | Electric | Ignition System | CDI Microcomputer |
| Steering | Remote Mechanical | Gear Shift | Forward, Neutral, Reverse |
| Alternator Output | 10 Amp | Dry Weight | 113 lbs (52 kg) |
| Gear Ratio | 2.08:1 (27:13) | Exhaust | Through Propeller |
| Oil Capacity | 1.8L with filter / 1.6L without | Recommended Oil | Yamalube® 4M |
| Trim System | Manual, -4° through +16° | Degree of Tilt | 67° |
| Fuel | 87 Octane (10% Ethanol Max) | Cooling | Thermostatic Control |
| CARB Rating | 3-Star | Warranty | 3-Year Pleasure |
(H2) Recommended Companions
───────────────────────────────────────────────────
To maximize the performance and longevity of your Yamaha F20SEA, consider pairing it with these essential accessories, available through our propellers, fuel systems, and maintenance kits section:
-
Yamalube® 4M Marine Engine Oil: The factory-recommended oil for optimal protection and performance
-
Yamaha Mini 10-Micron Fuel/Water Separating Filter: Essential for protecting the EFI system from ethanol-related issues and water contamination
-
Remote Mechanical Control Box: The appropriate control box with cables for smooth shift and throttle operation
-
Command Link® Gauge System: For real-time data on RPM, fuel economy, and engine diagnostics
(H2) Popular Searches
───────────────────────────────────────────────────
Customers who viewed the 2018 Yamaha F20SEA are also searching for:
-
Yamaha F20SMHA manual-start portable outboard
-
Yamaha F25 electric-start outboard
-
Yamaha F9.9 electric-start outboard
-
Tohatsu 20hp electric-start outboard
-
Remote control box for Yamaha F20
-
Aluminum fishing boat motor packages
For expert guidance on selecting the ideal engine for your vessel, consult the BoatUS Outboard Motor Buying Guide (nofollow), which offers comprehensive advice on matching outboard specifications to your specific boating needs.
(H2) Service & Support at Aqua Marine Outboard
───────────────────────────────────────────────────
Our commitment extends beyond just selling premium outboards. We are your full-service marine partner, and we make ownership accessible through our flexible financing options tailored to your budget. Our factory-trained technicians provide everything from routine maintenance and winterization to complex diagnostics and repairs.
Visit Our Showroom: Stop by at 1428 Wallace Ave, San Francisco, CA 94124 or call +1 (415) 882-6361 to speak with a marine specialist. For official documentation and to verify OEM specifications, you can also refer to the Yamaha Outboards Official Website (nofollow) and the Yamaha Genuine Parts & Accessories (nofollow) pages.
(H2) Frequently Asked Questions (FAQ)
───────────────────────────────────────────────────
Q: What does the “SEA” designation mean on the Yamaha F20?
A: The “SEA” indicates this is the electric-start, remote mechanical control version with a 15-inch (short) shaft . The “S” stands for electric start, “E” for remote mechanical controls, and “A” for the 15-inch shaft length.
Q: What is the dry weight of the 2018 Yamaha F20SEA?
A: The 15-inch shaft model weighs 113 pounds (52 kg), slightly heavier than the manual-start version due to the electric starter and battery .
Q: What type of fuel induction does the F20SEA use?
A: The F20SEA features Electronic Fuel Injection (EFI) for precise fuel delivery and reliable starting. This differs from the carbureted F20SMHA .
Q: Can the F20SEA be used with a tiller handle instead of remote controls?
A: While the F20SEA is designed for remote helm control, the portable design allows for conversion to tiller operation with additional parts .
Q: What is the ethanol limit for this engine?
A: Yamaha recommends a maximum ethanol blend of 10% for this EFI engine. Using an external Yamaha Mini 10-Micron Fuel/Water Separating Filter is strongly advised to protect the fuel system.
Q: Does the F20SEA have power trim and tilt?
A: No, the F20SEA features manual trim with 4 positions and manual tilt up to 67°. Power tilt is not offered on this portable model .
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