Description
Yanmar 3HM35F Marine Diesel Engine
The Yanmar 3HM35F is a robust and reliable inboard marine diesel engine delivering 35 HP, designed for sailboats, small yachts, and auxiliary propulsion applications. Part of Yanmar’s trusted 3HM series, the 3HM35F is known for its smooth performance, durability, and fuel efficiency, making it a preferred choice for boat owners and marine professionals worldwide.
Engine Design & Construction
The 3HM35F features a 3-cylinder, 4-stroke diesel configuration with direct fuel injection, providing consistent power and strong torque across the operating range. Its durable engine block and high-quality components are engineered to withstand continuous operation in demanding marine environments, ensuring long-term reliability.
Equipped with a freshwater cooling system with heat exchanger, the engine maintains optimal operating temperatures while protecting internal components from corrosion. The compact and space-efficient design allows installation in tight engine compartments while providing easy access for routine maintenance.
Performance & Efficiency
Delivering 35 HP at 3,000 RPM, the Yanmar 3HM35F offers smooth and dependable propulsion for cruising, docking, and maneuvering. Its torque characteristics at low and mid-range RPM make it ideal for displacement hulls and sailboats that require consistent thrust and precise control.
The engine’s direct fuel injection system ensures high fuel efficiency, making it economical for extended cruising and daily marine use.
Marine Integration
The 3HM35F is compatible with marine gearboxes and conventional shaft-drive systems, offering flexible installation for a variety of hull types. Its balanced 3-cylinder design minimizes vibration and noise, enhancing onboard comfort.
Ease of Maintenance & Reliability
Renowned for its service-friendly design, the 3HM35F allows easy access to oil filters, fuel filters, and belts. Routine maintenance is straightforward, reducing downtime and service costs. Yanmar’s global support network ensures availability of spare parts, guaranteeing long-term reliability.
Ideal Applications
The Yanmar 3HM35F Marine Diesel Engine is ideal for:
Sailboats and auxiliary propulsion systems
Small to medium cruising yachts
Coastal and inland waterways
Owners seeking a compact, reliable, and fuel-efficient marine diesel engine
Key Advantages
Proven Yanmar marine diesel reliability
Compact and space-efficient design
Fuel-efficient 3-cylinder direct injection engine
Freshwater cooling with heat exchanger
Smooth operation with low vibration and noise
Easy maintenance and strong global parts support
Technical Specifications
General
Model: Yanmar 3HM35F
Engine Type: 4-stroke, vertical, water-cooled marine diesel
Fuel System: Direct fuel injection
Aspiration: Naturally aspirated
Number of Cylinders: 3 inline
Displacement & Combustion
Displacement: Approx. 1.64 liters
Bore × Stroke: 75 mm × 78 mm
Combustion Chamber: Direct injection diesel
Performance
Rated Power: 35 HP (26 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. 6 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. 870 × 520 × 600 mm
Dry Weight: Approx. 210–230 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: 0.25 mm
Firing Order: 1 – 2 – 3
Maintenance Access: Easy access to filters, belts, and service points
