Used Yamaha 50 HP 2-Stroke Long Shaft 50HMHOS – 2011 Outboard Motor

Description

Used Yamaha 50 HP 2-Stroke Long Shaft 50HMHOS – 2011 Outboard Motor is available from Machinery Store. Explore this Yamaha marine engine’s configuration, performance features, condition and included equipment below.

Engine Overview

The Yamaha 50HMHOS 50 HP 2-Stroke Outboard Motor is a proven, lightweight and straightforward Yamaha powerplant designed to deliver strong acceleration, reliable performance and easy maintenance.

This 2011 Yamaha 50 HP 2-stroke uses a 3-cylinder, 698 cc engine with triple-carburetor fuel induction and Yamaha oil injection. Its 4,500–5,500 RPM full-throttle operating range provides useful power for fishing boats, utility boats, skiffs, aluminum boats and other applications requiring a reliable 50 HP outboard.

The long-shaft configuration is suited to boats designed for approximately a 20-inch transom height. Because transom requirements can vary by boat and mounting configuration, buyers should verify shaft length before ordering.

This used Yamaha outboard offers a practical option for buyers looking for the simplicity and responsive power delivery of a traditional Yamaha 2-stroke.

Engine Features at a Glance

• 50 HP Yamaha 2-Stroke
• 2011 model
• 50HMHOS model
• 3-cylinder, 698 cc engine
• 3-carburetor fuel induction
• Long-shaft configuration
• 4,500–5,500 RPM full-throttle range
• Yamaha oil-injection lubrication
• Electric-start configuration
• Manual trim and tilt
• Lightweight 2-stroke design
• Ready for installation and operation

Yamaha Outboard Technical Specifications

Specification	Details
Brand	Yamaha
Model	50HMHOS
Model Year	2011
Horsepower	50 HP
Engine Type	2-Stroke
Cylinders	3-cylinder
Displacement	698 cc / 42.6 cu. in.
Fuel Induction	3 Carburetors
Bore × Stroke	67.0 × 66.0 mm
Maximum Power	36.8 kW / 50 PS @ 5,000 RPM
Full-Throttle RPM	4,500–5,500 RPM
Lubrication	Oil Injection
Starting System	Electric Start configuration
Ignition	CDI
Trim & Tilt	Manual
Gear Ratio	1.85:1
Alternator Output	12V / 6A / 80W
Shaft	Long Shaft
Approx. Transom Height	20 inches for L configuration
Dry Weight	Approx. 180–198 lb depending configuration
Fuel Mixture	Not applicable with oil-injection configuration

Manufacturer specifications for the 50HMH family identify the engine as a 698 cc inline 3-cylinder 2-stroke with 50 HP output at 5,000 RPM, 4,500–5,500 RPM operating range, 3 carburetors and a 1.85:1 gear ratio.

Outboard Features and Equipment

Yamaha 2-Stroke Power

The traditional 2-stroke design provides strong throttle response and a relatively simple mechanical layout that can be straightforward to maintain.

Triple-Carburetor Fuel System

The 50HMHOS uses a three-carburetor induction system designed to deliver the required fuel mixture across the engine’s operating range.

Oil Injection

The oil-injection system eliminates the need to manually premix fuel and oil for normal operation.

Electric Starting

The electric-start configuration provides convenient engine starting when properly connected to the boat’s battery and rigging.

Long-Shaft Configuration

The long-shaft setup is intended for boats requiring the appropriate transom height. Always compare your boat’s transom measurement with the actual engine configuration before purchase.

Performance and Repower Benefits

• Yamaha’s reputation for durable marine engines
• Strong 50 HP performance in a relatively lightweight package
• Simple 2-stroke mechanical design
• Easy-to-maintain carbureted fuel system
• Responsive acceleration
• Oil-injection convenience
• Excellent choice for practical fishing and utility applications
• Suitable for buyers who prefer traditional Yamaha 2-stroke technology

Performance & Applications

The Yamaha 50 HP 2-stroke is suited to applications where reliable acceleration, manageable engine weight and straightforward maintenance are priorities.

Common applications include:

• Fishing boats
• Aluminum boats
• Jon boats
• Utility boats
• Skiffs
• Small center-console boats
• Flats boats
• Work boats
• General recreational boats designed for 50 HP

The appropriate boat size and performance will depend on hull design, loaded weight, propeller selection and manufacturer-rated horsepower capacity.

Compatible Boat Types

This Yamaha 50 HP long-shaft outboard can be considered for boats designed for a long-shaft outboard and approximately a 20-inch transom, subject to the boat manufacturer’s specifications.

Always verify:

• Maximum rated horsepower
• Required shaft length
• Steering and control requirements
• Engine mounting pattern
• Propeller requirements
• Battery and electrical requirements

Engine Condition and Service History

Because condition and included rigging can vary between individual used engines, buyers should review the actual engine photographs and confirm the included equipment before completing their purchase.

Included Equipment

The engine is supplied as a complete ready-to-mount-and-run outboard package based on the configuration shown in the listing.

• Controls
• Wiring harness
• Propeller
• Gauges
• Battery cables
• Other rigging components

Important Before Purchase

Please verify the following before purchasing:

1. Your boat is rated to accept a 50 HP outboard.
2. Your boat requires the appropriate long-shaft configuration.
3. Your transom height matches the engine’s shaft length.
4. Your boat has compatible steering and control requirements.
5. You understand that this is a traditional carbureted 2-stroke engine.
6. Confirm exactly which rigging and accessories are included with the individual motor.

Frequently Asked Questions

Is this a 4-stroke engine?

No. The Yamaha 50HMHOS is a 2-stroke outboard.

How much horsepower does this Yamaha produce?

The 50HMHOS produces 50 HP / 36.8 kW at 5,000 RPM, with a full-throttle operating range of approximately 4,500–5,500 RPM.

How many cylinders does it have?

The 50HMHOS is a 3-cylinder, 698 cc 2-stroke engine using three carburetors.

Is this suitable for a 20-inch transom?

The long-shaft/L configuration is intended for approximately a 20-inch transom, but you should verify your boat’s required shaft length before ordering.

Order Your Yamaha Outboard from Machinery Store

Confirm your boat’s horsepower rating, transom height, steering and rigging compatibility before installation. Contact Machinery Store to confirm availability, the exact package contents, delivery charges and any applicable warranty terms.