fits make: Yamaha. year: 1989–1990.

( Manufacturer Part Number: 474121 )
The **Yamaha 474121 1989 ETL-P 90 Outboard** is a classic example of Yamaha s legendary engineering prowess from the late 1980s, blending rugged reliability with innovative performance for the discerning boater. This **90 horsepower, two-stroke, inboard/outboard (ETL-P) engine** was designed to deliver a perfect balance of power and efficiency, making it an ideal choice for mid-sized boats ranging from fishing vessels to cruisers and even small powerboats. Built with Yamaha s signature precision, the ETL-P 90 features a **cast-iron cylinder sleeve** and a **forged aluminum crankshaft**, ensuring durability and smooth operation even under demanding conditions. The engine s **direct-drive, inboard/outboard configuration** allows for easy installation and maintenance, with the powerhead mounted directly to the transom while the lower unit extends outward, providing a clean, streamlined profile that reduces drag and improves fuel economy.
Under the hood, the **90 cubic inch (1.5L) two-stroke engine** operates on Yamaha s proven **direct-injection fuel system**, which enhances combustion efficiency and reduces oil consumption a hallmark of Yamaha s commitment to performance and longevity. The **single overhead camshaft (SOHC)** design ensures precise valve timing, while the **wet-sump lubrication system** keeps critical components properly lubricated, even during extended use. The ETL-P 90 is equipped with a **mechanical fuel pump** and a **carbureted intake system**, delivering a smooth and responsive throttle response that was highly regarded in its era. For added convenience, the engine includes a **manual choke** and a **tilt-and-shift steering system**, allowing for easy maneuvering and storage when not in use.
One of the standout features of this model is its **rear-mounted exhaust**, which helps reduce noise and vibration, contributing to a quieter and more comfortable ride. The **aluminum lower unit** is designed for durability, with a **single reduction gear** that provides a strong torque multiplication for optimal power delivery. The ETL-P 90 also incorporates Yamaha s **self-adjusting clutch**, which minimizes wear and ensures consistent power transfer to the propeller. While modern outboards have evolved with electronic fuel injection and four-stroke technology, the ETL-P 90 remains a testament to Yamaha s ability to craft an engine that was both powerful and reliable in its time.
For collectors and enthusiasts, this **1989 Yamaha ETL-P 90** is a sought-after piece of boating history, offering a blend of vintage charm and functional performance. Whether used for fishing, cruising, or recreational boating, this engine delivers a classic Yamaha experience one that combines smooth operation, robust construction, and the timeless appeal of a well-crafted powerplant. With proper maintenance, it continues to be a dependable workhorse, proving that some of the best engineering never goes out of style.
### **Pros and Cons of Buying a Yamaha 474121 1989 ETL-P 90 Outboard**
#### **Pros:**1. **Reliability and Durability** Yamaha outboards, especially from the late 1980s, are known for their robust construction and long-lasting engines. The ETL-P 90 was a well-regarded model in its time, built to handle recreational boating with reasonable reliability if properly maintained.
2. **Proven Performance** The 90 horsepower engine provides adequate power for small to mid-sized boats (typically 16 20 feet). It delivers smooth acceleration and decent top-end speed for its era, making it suitable for fishing, cruising, and light watersports.
3. **Lower Purchase Cost** Compared to newer outboards, a 1989 Yamaha ETL-P 90 is significantly cheaper, making it an attractive option for budget-conscious buyers. This can also mean a lower initial investment for a boat upgrade or replacement.
4. **Parts Availability** While not as widely available as modern parts, Yamaha outboards from this era still have a decent supply of used or refurbished components. Many marine repair shops and online marketplaces carry replacement parts for older Yamaha models.
5. **Simplicity of Operation** Older outboards like this one are generally easier to service and repair than modern fuel-injected or electronically controlled engines. Basic maintenance (oil changes, spark plugs, carburetor adjustments) can be done with minimal specialized tools.
6. **Potential for Restoration** If the engine is in rough shape, a well-executed restoration could significantly improve its performance and longevity. Many enthusiasts enjoy the challenge of bringing older Yamaha outboards back to peak condition.
7. **Lower Fuel Consumption** Compared to modern high-performance outboards, the ETL-P 90 is more fuel-efficient, which can be beneficial for weekend boaters or those who frequently use their boat.
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#### **Cons:**1. **Age and Wear** At nearly 35 years old, the engine has likely accumulated significant wear. Common issues include worn bearings, piston rings, and internal seals, which may require costly repairs or replacement. The carburetor may also need frequent cleaning or adjustment.
2. **Rust and Corrosion** Older outboards are prone to rust, especially if stored improperly or exposed to saltwater. Inspect the lower unit, propeller shaft, and engine block for signs of corrosion, which can lead to leaks or mechanical failure.
3. **Emissions and Environmental Regulations** The ETL-P 90 is an older model and does not meet modern emissions standards. In some areas, it may not be legal to operate without modifications (e.g., installing a catalytic converter or switching to cleaner fuel). Check local boating regulations before purchasing.
4. **Fuel System Issues** Carbureted engines like this one are less efficient and more prone to clogging or tuning problems compared to modern fuel-injected engines. Fuel quality and storage can also affect performance.
5. **Limited Technology** Unlike newer outboards with electronic diagnostics, fuel trimming, and remote controls, the ETL-P 90 lacks advanced features. Troubleshooting may require more trial and error, and modern conveniences (e.g., GPS integration) are not available.
6. **Higher Maintenance Costs** While parts may be affordable, labor costs for repairs can add up, especially if the engine requires overhauling. Older engines may also require more frequent maintenance to prevent breakdowns.
7. **Resale Value** If you plan to sell the boat later, the resale value of an older Yamaha outboard will be significantly lower than that of a newer model. Buyers may also be hesitant due to the age and potential repair costs.
8. **Noise and Vibration** Older outboards tend to be noisier and may have more vibration compared to modern, balanced engines. This can affect comfort, especially on longer trips.
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### **Conclusion:**The Yamaha 474121 1989 ETL-P 90 outboard can be a good purchase if you are looking for a budget-friendly, reliable engine for a small boat and are willing to invest time and money in maintenance or restoration. It is well-suited for casual boaters, anglers, or those who enjoy working on their own equipment. However, if you prioritize low maintenance, modern features, or plan to use the boat frequently, the long-term costs and potential reliability issues may outweigh the benefits.
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### **Recommendation:**- **Buy if:** You have a specific, low-cost boat project in mind, enjoy mechanical work, and are prepared to inspect the engine thoroughly for wear and rust. It s ideal for weekend boaters who don t mind occasional maintenance and want to save money upfront.
- **Avoid if:** You need a hassle-free, high-performance outboard with minimal upkeep. Consider a newer Yamaha outboard (even a used one from the 2000s or later) for better reliability, fuel efficiency, and compliance with emissions standards.
- **Before purchasing:** Have a marine mechanic inspect the engine, check for rust, test the lower unit, and verify that the boat meets local regulations. If the engine is in poor condition, factor in the cost of repairs or restoration before buying.
Ultimately, the ETL-P 90 can be a rewarding purchase for the right buyer, but it requires careful consideration of your needs, budget, and willingness to maintain an older engine.
Comes with Yamaha OEM top mount controls ignition switch and buzzer. You are looking at a used outboard engine that is 30 years old. Engine has been on my boat for 9 years I have put about 40 hours it, no idea of actual. Still being used.
Still has oil injection hooked up and working. 1989 Yamaha ETLP 90 Outboard. Gear oil was changed yearly Water pump replaced every other year, engine has no warning buzzers or lights. Also includes multi function gauge Teach, Tilt, warning lights, And Factory Service manual printed out, Pickup in South NJ.
Recent services include carbs cleaned thermostat replaced, Fuel pump tune up. Runs, Idles still hooked to boat. It is sold as is, no warranties or guarantees of any sort. Has as Yamaha 14k propeller.