Yanmar 2GMF Marine Diesel Engine

The Yanmar 2GMF Marine Diesel Engine is a compact, reliable, and fuel-efficient inboard marine diesel engine designed primarily for auxiliary propulsion in sailboats and small vessels. Part of Yanmar renowned 2GM series, the 2GMF is recognized worldwide for its durability, low maintenance requirements, and smooth operational performance.

Engine Design & Construction

The 2GMF features a 2-cylinder, 4-stroke diesel configuration with direct fuel injection, providing consistent torque and dependable power across the operating range. Its robust engine block and precision-engineered components are built to withstand continuous operation in harsh marine environments, ensuring long service life.

Equipped with a freshwater cooling system with heat exchanger, the engine maintains optimal operating temperatures while protecting internal components from corrosion, making it ideal for saltwater and coastal applications. The compact layout allows for easy installation in tight engine compartments while still providing access for routine maintenance.

Performance & Efficiency

Delivering approximately 16–18 horsepower, the Yanmar 2GMF provides smooth and steady propulsion suitable for cruising, docking, and auxiliary sailboat operations. Its strong low- and mid-range torque characteristics ensure reliable thrust for displacement hulls and sailing vessels.

The engine is engineered for fuel efficiency, making it an economical choice for extended cruising and daily marine use.

Marine Integration

The 2GMF is compatible with marine gearboxes and conventional shaft drive systems, allowing flexible installation in a variety of hull designs. Its balanced two-cylinder configuration minimizes vibration and noise, enhancing onboard comfort.

Ease of Maintenance & Reliability

The Yanmar 2GMF is valued for its simple, service-friendly design. Routine maintenance tasks, including oil changes, filter replacement, and belt inspection, are straightforward, reducing downtime and service costs. Yanmar global support ensures wide availability of spare parts, guaranteeing long-term reliability.

Ideal Applications

The Yanmar 2GMF Marine Diesel Engine is ideal for:

Sailboats and auxiliary propulsion systems
Small cruising yachts
Coastal and inland waterway vessels
Owners seeking a reliable, low-maintenance marine diesel engine

Key Advantages

Proven Yanmar marine diesel reliability
Compact and space-efficient design
Fuel-efficient 2-cylinder direct injection engine
Freshwater cooling with heat exchanger
Smooth operation with low vibration
Easy maintenance and strong global parts support

Technical Specifications

General

Model: Yanmar 2GMF
Engine Type: 4-stroke, vertical, water-cooled marine diesel
Fuel System: Direct fuel injection
Aspiration: Naturally aspirated
Number of Cylinders: 2 inline

Displacement & Combustion

Displacement: Approx. 0.65 liters
Bore × Stroke: 70 mm × 72 mm
Combustion Chamber: Direct injection diesel

Performance

Rated Power: 16–18 HP (12–13 kW) @ 3,000 RPM
Rated Speed: 3,000 RPM
Maximum Torque: Optimized for low- to mid-range RPM marine operation
Fuel Consumption: Low, dependent on load and propeller match

Cooling & Lubrication

Cooling System: Freshwater cooling with heat exchanger
Lubrication System: Forced lubrication with gear-type oil pump
Engine Oil Capacity: Approx. 4 liters
Recommended Oil Type: Marine-grade diesel engine oil

Electrical System

Starting System: 12 V electric start
Alternator: 12 V marine alternator for onboard electrical systems

Dimensions & Weight

Overall Dimensions (L × W × H): Approx. 620 × 470 × 560 mm
Dry Weight: Approx. 125–135 kg (engine only, excluding gearbox)

Drive & Installation

Rotation (Crankshaft): Counter-clockwise (viewed from flywheel end)
Drive Type: Inboard shaft drive
Compatible Gearbox: Marine transmission compatible with small inboard engines
Mounting: Flexible engine mounts

Service & Adjustment

Valve Clearance (Cold): Intake: 0.20 mm / Exhaust: 0.20 mm
Firing Order: 1 – 2
Maintenance Access: Easy access to filters, belts, and service points

Yanmar 2GMF

Yanmar 2GMF Marine Diesel Engine Sale