Used Yamaha F20SMHB 15hp 4 Stroke Short Shaft – The Ultimate Guide

If you’re in the market for a reliable and powerful outboard motor, the Used Yamaha F20SMHB 15hp 4 Stroke Short Shaft is an excellent option. Yamaha has earned its reputation for producing durable, efficient, and high-performing marine engines. Choosing a used model can save you money while still delivering the performance and longevity you expect from Yamaha.

In this guide, we’ll explore the key features, specifications, benefits, buying tips, and maintenance advice for the Yamaha F20SMHB 15hp 4-Stroke Short Shaft outboard motor.

What is the Yamaha F20SMHB 15hp 4-Stroke Short Shaft?

The Yamaha F20SMHB is a 20-horsepower, 4-stroke outboard engine designed for small boats, tenders, and light fishing vessels. The short shaft configuration (15 inches) makes it ideal for smaller boats and inflatable dinghies. The engine is known for its fuel efficiency, smooth operation, and environmental friendliness compared to older 2-stroke engines.

Key Specifications

• Model: Yamaha F20SMHB

• Horsepower: 15hp (Rated as 20hp in Yamaha’s naming)

• Engine Type: 4-Stroke, 2-cylinder

• Shaft Length: Short shaft (15 inches)

• Starting System: Manual start

• Steering: Tiller handle

• Weight: Approximately 56 kg (varies by year)

• Fuel System: Carbureted with external fuel tank

• Cooling System: Water-cooled, thermostatically controlled

• Lubrication: Wet sump

Why Choose a 4-Stroke Yamaha Outboard?

1. Fuel Efficiency

Yamaha’s 4-stroke technology ensures better fuel economy compared to traditional 2-stroke engines. You’ll get more hours of boating per tank, saving you money in the long run.

2. Smooth and Quiet Operation

The Yamaha F20SMHB runs quieter and with less vibration, making your boating experience more enjoyable.

3. Low Emissions

This motor complies with EPA and CARB regulations, making it more eco-friendly.

4. Durability

Yamaha engines are famous for their long lifespan and robust build quality, even when purchased used.

Benefits of Buying a Used Yamaha F20SMHB

• Cost Savings: A used model is significantly cheaper than buying new.

• Proven Reliability: If properly maintained, these engines last for many years.

• Lower Depreciation: Most depreciation happens when the motor is new; a used one retains its value better.

What to Check Before Buying a Used Yamaha F20SMHB

When purchasing a used outboard motor, inspection is crucial. Here are some key points:

✔ Engine Hours: Check the total run hours; lower is better.
✔ Compression Test: Ensures the engine cylinders are healthy.
✔ Propeller Condition: Look for damage or excessive wear.
✔ Cooling System: Make sure the water pump and impeller are functioning.
✔ Service History: A well-documented maintenance record is a good sign.
✔ Corrosion: Inspect for rust, especially in saltwater-used engines.

Maintenance Tips for Longevity

• Regular Oil Changes: Use Yamaha-approved 4-stroke engine oil.

• Flush After Use: Especially after saltwater boating.

• Inspect Fuel System: Replace filters and check for leaks.

• Change Impeller Every 2-3 Years: Prevent overheating.

• Store Properly: Use fuel stabilizers and fogging oil during storage.

Where to Buy a Used Yamaha F20SMHB 15hp 4-Stroke Short Shaft

• Boat Dealers & Marine Shops: Many dealers sell certified pre-owned Yamaha engines.

• Online Marketplaces: Websites like eBay, Craigslist, and Boat Trader often list used Yamaha motors.

• Marine Auctions: Great deals can be found if you’re experienced in bidding.

• Local Classifieds & Facebook Marketplace: Direct purchases from owners can save you money.

Price Range for Used Yamaha F20SMHB

The price of a used Yamaha F20SMHB 15hp 4-stroke short shaft depends on age, condition, and location. On average:

• Good Condition (Recent Models): $2,000 – $3,200

• Older Models: $1,200 – $1,800

FAQ Section

1. Is the Yamaha F20SMHB a good engine for fishing boats?
Yes, it’s perfect for small fishing boats, dinghies, and inflatables.

2. Can I convert a short shaft to a long shaft?
It’s possible, but it requires a conversion kit and technical skills.

3. How many hours will a Yamaha 4-stroke outboard last?
With proper maintenance, it can last 3,000 – 5,000 hours or more.

4. Does the Yamaha F20SMHB come with electric start?
The standard model is manual start, but some versions may include electric start.

5. What fuel does the Yamaha F20SMHB use?
It uses regular unleaded gasoline (87 octane or higher).