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3TNM68
Yanmar

The Yanmar 3TNM68 is a compact, liquid-cooled diesel engine renowned for its high reliability, fuel efficiency, and low noise and vibration levels. Designed for light industrial and auxiliary power applications, this engine series delivers dependable performance for a wide range of equipment, making it an ideal power source where durability and ease of integration are paramount.
| Feature | Specification / Description |
|---|---|
| Engine Model | Yanmar 3TNM68 |
| Configuration | In-line 3 Cylinder, 4-Stroke Diesel |
| Displacement | Approximately 0.7 - 1.0 L (Typical for series) |
| Aspiration | Naturally Aspirated or Turbocharged (model dependent) |
| Cooling System | Liquid-Cooled |
| Fuel System | Direct Injection |
| Governor | Mechanical or Electronic (model dependent) |
| Key Feature | Compact design, Low Noise & Vibration |
*Note: The above specifications are typical for engines in the 3TN/3TNM series. For the exact certified power, torque, and dimensions of the 3TNM68 variant, please consult official Yanmar technical datasheets or an authorized distributor.*
The 3TNM68 engine is engineered as a versatile prime mover for compact equipment requiring reliable, continuous power in the 15-30 horsepower range.
Compact Agricultural Machinery: Powers walk-behind tractors, small tillers, sprayers, and irrigation pumps.
Light Construction & Industrial Equipment: An ideal power source for small generators (5-15 kVA), welders, air compressors, and light-duty construction machinery.
Marine Auxiliary Power: Commonly used in small fishing boats and workboats for auxiliary systems like hydraulic power or bilge pumps.
1. Simple and Reliable Design
Built on Yanmar's heritage of compact diesel technology, the engine features a robust design with a focus on longevity and minimal maintenance. Its straightforward architecture ensures easy operation and serviceability.
2. Efficient Combustion System
Utilizing a direct injection fuel system, the engine achieves precise fuel delivery and efficient combustion. This results in excellent fuel economy, low emissions, and stable power output across various load conditions.
3. Durable Construction and Low NVH (Noise, Vibration, Harshness)
The engine incorporates a balanced design and high-quality components to ensure smooth operation with minimal noise and vibration. This makes it particularly suitable for equipment where operator comfort and environmental noise levels are a concern.

The Yanmar 3TNM68 is a compact, liquid-cooled diesel engine renowned for its high reliability, fuel efficiency, and low noise and vibration levels. Designed for light industrial and auxiliary power applications, this engine series delivers dependable performance for a wide range of equipment, making it an ideal power source where durability and ease of integration are paramount.
| Feature | Specification / Description |
|---|---|
| Engine Model | Yanmar 3TNM68 |
| Configuration | In-line 3 Cylinder, 4-Stroke Diesel |
| Displacement | Approximately 0.7 - 1.0 L (Typical for series) |
| Aspiration | Naturally Aspirated or Turbocharged (model dependent) |
| Cooling System | Liquid-Cooled |
| Fuel System | Direct Injection |
| Governor | Mechanical or Electronic (model dependent) |
| Key Feature | Compact design, Low Noise & Vibration |
*Note: The above specifications are typical for engines in the 3TN/3TNM series. For the exact certified power, torque, and dimensions of the 3TNM68 variant, please consult official Yanmar technical datasheets or an authorized distributor.*
The 3TNM68 engine is engineered as a versatile prime mover for compact equipment requiring reliable, continuous power in the 15-30 horsepower range.
Compact Agricultural Machinery: Powers walk-behind tractors, small tillers, sprayers, and irrigation pumps.
Light Construction & Industrial Equipment: An ideal power source for small generators (5-15 kVA), welders, air compressors, and light-duty construction machinery.
Marine Auxiliary Power: Commonly used in small fishing boats and workboats for auxiliary systems like hydraulic power or bilge pumps.
1. Simple and Reliable Design
Built on Yanmar's heritage of compact diesel technology, the engine features a robust design with a focus on longevity and minimal maintenance. Its straightforward architecture ensures easy operation and serviceability.
2. Efficient Combustion System
Utilizing a direct injection fuel system, the engine achieves precise fuel delivery and efficient combustion. This results in excellent fuel economy, low emissions, and stable power output across various load conditions.
3. Durable Construction and Low NVH (Noise, Vibration, Harshness)
The engine incorporates a balanced design and high-quality components to ensure smooth operation with minimal noise and vibration. This makes it particularly suitable for equipment where operator comfort and environmental noise levels are a concern.
