Universal M35 Diesel Engine

The Universal M35 Diesel Engine is a robust, reliable, and fuel-efficient inboard marine diesel engine delivering approximately 35 HP, designed for small to medium-sized boats, sailboats, and auxiliary propulsion applications. Known for its durability and low maintenance, the M35 is a trusted choice for boat owners seeking dependable power and long-lasting performance.

Engine Design & Construction

The M35 features a 3-cylinder, 4-stroke diesel configuration with mechanical fuel injection, providing consistent torque and smooth performance across a wide operating range. Its durable construction and high-quality components ensure reliable operation in challenging marine environments.

Equipped with a freshwater cooling system with heat exchanger, the engine maintains optimal temperatures while protecting internal components from corrosion. Its compact design allows easy installation in confined engine compartments, with service points conveniently accessible for maintenance.

Performance & Efficiency

Delivering around 35 HP, the Universal M35 offers smooth and dependable propulsion for cruising, docking, and maneuvering. Its low- and mid-range torque characteristics make it ideal for displacement hulls and sailing vessels requiring steady and precise thrust.

The engine mechanical fuel injection ensures efficient fuel usage, reducing operational costs while maintaining high reliability.

Marine Integration

The M35 is compatible with marine gearboxes and conventional shaft-drive systems, allowing flexible installation in a variety of hull designs. Its balanced 3-cylinder configuration minimizes vibration and noise, improving onboard comfort.

Ease of Maintenance & Reliability

Designed with service in mind, the M35 allows easy access to filters, belts, and other routine maintenance points. Its simplicity reduces downtime and maintenance costs. Global support networks and availability of spare parts make it a dependable choice for long-term ownership.

Ideal Applications

The Universal M35 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 Universal marine diesel reliability

• Compact and space-efficient design

• Fuel-efficient 3-cylinder diesel engine

• Freshwater cooling with heat exchanger

• Smooth operation with low vibration and noise

• Easy maintenance with strong parts support

Technical Specifications

General

• Model: Universal M35

• Engine Type: 4-stroke, vertical, water-cooled marine diesel

• Fuel System: Mechanical fuel injection

• Aspiration: Naturally aspirated

• Number of Cylinders: 3 inline

Displacement & Combustion

• Displacement: Approx. 1.7 liters

• Bore × Stroke: 80 mm × 85 mm

• Combustion Chamber: Direct mechanical injection

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. 900 × 500 × 600 mm

• Dry Weight: Approx. 215–235 kg (engine only, excluding gearbox)

Drive & Installation

• Rotation (Crankshaft): Counter-clockwise (viewed from flywheel end)

• Drive Type: Inboard shaft drive

• Compatible Gearbox: Marine gearbox 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 oil filters, fuel filters, belts, and service points