20 Horsepower Evinrude: An Honest 2024 Review & Buyer’s Guide

You’re searching for that perfect outboard motor—something powerful enough to get your fishing boat or skiff up on plane quickly, yet lightweight enough for easy transport and handling. In your quest, you’ve likely encountered the legendary Evinrude 20 HP, a motor that continues to capture attention years after production ended. But is this classic outboard still a smart choice in today’s market?

The Evinrude 20 HP is a lightweight, direct-injection two-stroke outboard motor known for its exceptional power-to-weight ratio and simple, reliable design. While Evinrude production ceased in 2020, this model remains a highly sought-after and dependable used engine for boaters who value performance and low maintenance.

This comprehensive guide will provide an in-depth look at the Evinrude 20 HP, covering its key features, pros and cons, what to look for when buying a used model, and how it stacks up against modern competitors.

Understanding the Evinrude 20 HP Legacy

Evinrude’s history spans over a century, with the brand becoming synonymous with durable, high-performance outboard motors. The 20 HP models produced in the decades before the company’s 2020 closure represent some of the most refined and reliable small outboards ever built.

The most significant technological distinction lies between the conventional two-stroke models and the advanced E-TEC direct-injection engines. While earlier 20 HP models utilized carburetors, the E-TEC technology (when available on this horsepower class) represented a major leap forward. This direct fuel injection system provided cleaner emissions, better fuel efficiency, and eliminated the need for pre-mixing fuel and oil in many models—all while maintaining the legendary power-to-weight advantage that made two-stroke engines so popular.

Key Features & Specifications Breakdown

Engine Specifications at a Glance

Horsepower & RPM: 20 HP at 5,000-5,500 RPM
Engine Type: Two-stroke (either conventional or E-TEC direct injection depending on model year)
Displacement: Typically around 32-35 cubic inches (525-570cc)
Cylinders: Two-cylinder configuration
Starting System: Manual pull-start or electric start options

Weight & Dimensions

One of the most significant advantages of the Evinrude 20 HP is its impressive power-to-weight ratio. Weighing in at approximately 95-110 pounds (depending on shaft length and electric start), it’s substantially lighter than many modern four-stroke competitors. This makes it dramatically easier to mount, transport, and store.

Shaft length options typically included:
* 15-inch: Ideal for standard transoms on smaller boats and jon boats
* 20-inch: Designed for higher transoms found on many center console boats and larger skiffs

Performance & Fuel System

Fuel Delivery: Varies by model year—from carbureted systems to advanced E-TEC direct injection
Fuel Tank Compatibility: Most models utilize a standard 6-gallon portable fuel tank
Oil Injection: Many later models featured oil injection systems, eliminating the need for pre-mixing (though some boaters still prefer to pre-mix for added assurance)

Why Choose a 20 HP Evinrude? The Pros

Unbeatable Power-to-Weight Ratio

The Evinrude 20 HP delivers impressive acceleration and planing power while remaining remarkably lightweight. This combination is particularly valuable for boaters who frequently transport their motor or need to lift it onto the transom manually.

Legendary Simplicity & Reliability

With fewer moving parts than equivalent four-stroke engines, the Evinrude 20 HP embodies mechanical simplicity. This translates to exceptional reliability and easier troubleshooting when issues do arise. The basic design has been refined over decades, working out most of the kinks that plague newer engine designs.

Low Maintenance Design

Without complex valve trains, timing belts, or camshafts, the Evinrude 20 HP requires less intensive maintenance than four-stroke alternatives. The maintenance schedule primarily focuses on spark plugs, lower unit oil changes, and water pump impeller replacement—all straightforward procedures for most boat owners.

Quick, Easy Starting

Two-stroke engines typically start more readily than four-strokes, especially in colder weather. The Evinrude 20 HP is known for firing up with just a pull or two, even after sitting for extended periods.

Important Considerations: The Cons & Challenges

End of Production & Parts Availability

Since Evinrude ceased all operations in 2020, obtaining genuine OEM parts has become more challenging. While many common maintenance items remain available through aftermarket suppliers and marine salvage operations, some specific components may require hunting through online forums and specialty suppliers.

The 2-Stroke Debate: Emissions & Fuel Mix

Modern four-stroke engines significantly outperform traditional two-strokes in emissions compliance. While E-TEC models closed this gap considerably, they still don’t match the cleanliness of today’s advanced four-stroke technology. Additionally, carbureted models require fuel-oil mixing, which some boaters find inconvenient compared to the straight gasoline used in four-strokes.

Noise & Vibration Levels

While Evinrude engines are generally well-balanced, two-stroke motors typically produce more noise and vibration than their four-stroke counterparts. At idle and low speeds, this difference is particularly noticeable, which may be a consideration for fishing applications where quiet operation is valued.

Expert Buying Guide: What to Look For in a Used Model

Pre-Purchase Inspection Checklist

Before committing to a used Evinrude 20 HP, conduct a thorough inspection:

Visual Inspection: Check for significant corrosion, especially around the lower unit and mounting brackets. Inspect the anode(s) for excessive wear and look for any visible damage to the gearcase.
Compression Test: This is critical. Healthy compression should typically read between 100-150 PSI per cylinder, with no more than 10-15% variance between cylinders. Low compression indicates worn piston rings or cylinder damage.
Lower Unit Oil Check: Remove the lower unit oil fill screw and inspect the oil for metal flakes or a milky appearance, which indicates water contamination and potential gear damage.
Spark Check: Remove spark plugs and check for spark while pulling the starter rope (ground the plug against the engine block).
Water Pump Output: If possible, run the engine with a water source and check for a strong, steady stream from the tell-tale hole, indicating a functioning water pump.

Key Questions to Ask the Seller

When was the last time the motor was run?
What is the service history? (Specifically ask about water pump impeller replacement)
Has the motor been used in saltwater or freshwater?
Why are you selling the motor?
Are there any known issues or recent repairs?
Does it come with the original controls and wiring?

Decoding the Model Number & Year

Evinrude model numbers contain valuable information about the engine’s specifications and production year. The model number is typically located on a plate or sticker on the mounting bracket or engine block. Resources like the Evinrude Model Year Guide can help you decode these numbers to determine the exact year and specifications of the motor you’re considering.

Evinrude 20 HP vs. The Competition

Evinrude 20 HP vs. Mercury 20 HP 4-Stroke

Weight: Evinrude typically 20-30 pounds lighter
Power Band: Evinrude offers better low-end torque and acceleration
Maintenance: Mercury has more complex maintenance requirements but better fuel efficiency
Noise: Mercury operates significantly quieter
Price: Used Evinrude models often priced lower than equivalent-age Mercury four-strokes

Evinrude 20 HP vs. Yamaha 20 HP 4-Stroke

Reliability: Both have excellent reliability reputations
Dealer Network: Yamaha has an active dealer network for parts and service
Technology: Yamaha offers more modern features and digital controls
Resale Value: Yamaha typically holds value better due to ongoing production and support
Portability: Evinrude’s lighter weight makes it easier to handle

Evinrude 20 HP vs. Suzuki 20 HP 4-Stroke

Fuel Efficiency: Suzuki leads in fuel economy
Warranty: Newer Suzuki models come with warranty protection
Innovation: Suzuki features advanced lean-burn technology
Performance: Evinrude provides stronger initial acceleration

For those considering new options, modern alternatives like the Hidea outboard motors offer contemporary technology with full manufacturer support. Explore the range at https://hidea-outboardmotor.com/outboard-motors to compare specifications and features.

Real-World Owner Insights & Common Issues

Long-term Evinrude 20 HP owners consistently praise these motors for their durability and straightforward mechanics. Many report decades of reliable service with only basic maintenance. The simplicity of the design means that most repairs can be performed by the average boat owner with basic mechanical skills.

Common issues to watch for include:
* Carburetor problems in older models due to ethanol fuel and sitting with old gas
* Water pump impeller failure if not replaced regularly (recommended every 2-3 years)
* Corrosion in saltwater environments, particularly around the exhaust housing
* Stator failures in some model years, leading to charging system issues

Most of these issues are preventable with proper maintenance or easily repairable with basic tools and technical manuals.

Frequently Asked Questions (FAQ)

Are Evinrude 20 HP motors reliable?

Yes, they are generally considered very reliable due to their simple two-stroke design. Proper maintenance and storage are the biggest factors in their longevity. Many of these motors continue to provide dependable service 20-30 years after manufacture.

Is it still possible to get parts for an Evinrude 20 HP?

Yes, while new OEM parts are no longer made, a robust aftermarket and NOS (New Old Stock) parts network exists. Common maintenance items like water pump kits, spark plugs, and carburetor rebuild kits are readily available online and through marine suppliers.

What is the fuel mixture for a carbureted Evinrude 20 HP?

Most carbureted models require a 50:1 gas-to-oil ratio. Always confirm this with your specific model’s owner’s manual, as some older models may require different ratios. Use high-quality TC-W3 certified outboard oil for best results.

How much does a used Evinrude 20 HP cost?

Prices vary based on age, condition, and model (E-TEC vs. conventional), but typically range from $1,200 to $3,000. Exceptional condition late-model E-TEC versions may command higher prices, while older projects can be found for under $1,000.

What year did they stop making Evinrude 20 HP motors?

Evinrude ceased all production in 2020. The 20 HP model was discontinued as part of this final shutdown, with the last units produced in 2019-2020.

Conclusion & Final Verdict

The Evinrude 20 HP represents a compelling option in the used outboard market, particularly for boaters who value simplicity, power-to-weight ratio, and mechanical accessibility. Its lightweight design makes it exceptionally portable, while its two-stroke power delivery provides quick acceleration and strong performance.

However, potential buyers must honestly assess their comfort level with an out-of-production engine. While parts remain available today, the long-term support landscape is uncertain. The Evinrude 20 HP is an excellent choice for a savvy boater who prioritizes power and portability and is comfortable with the realities of owning a out-of-production two-stroke. It may not be the best fit for those who want the latest technology, quietest operation, or the security of a factory warranty.

Ready to find your perfect outboard? Use the checklist in this guide to inspect any potential purchase. Found one you like? Share the details in the comments below, and our community can help you vet it!