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Single cylinder air-cooled KD173F

Power TypeSingle cylinder, four-stroke, air-cooled, vertical
Combustion SystemDirect Injection
Cylinder diameter*stroke (mm)73*59
Displacement (L)0.247
Compression ratio20 : 1
Rated speed (rpm)3000 3600
Rated power (kW)3.2 3.6
Rated power (hp)4.3 4.8
Start the systemF: Manual start / FE: Electric start
Fuel tank capacity (L)2.5
Oil capacity (L)0.75
Fuel consumption (g/kwh)275 280
Fuel brandDiesel: 0# (summer), -10# (winter)
Engine oil brandSAE10W30 (CD grade and above)
Dimensions (mm)332*376*415
Net weight (kg)Manual start: 28/Electric start: 32
Steering (viewed from flywheel)Clockwise

The popular science research and development team has always taken foreign advanced engine technology as a benchmark to design excellent fuel injection power systems. Combining exquisite craftsmanship and strict quality concepts, it has created powerful and safe diesel engines. The high-performance fuel injection system ensures high-efficiency operation, ensures lower fuel consumption and optimization of emission indicators, and the advanced intake system upgrade greatly reduces the engine noise level.


Multiple certificates, high product performance

The product has obtained multiple certificates covering many aspects of product performance. The product has the characteristics of low fuel consumption, strong power and low noise.

Technological innovation, long service life

Continuous innovation in process details, improvement in product assembly, good running-in between related components, high strength, smooth engine operation, low vibration and long service life.

High-end positioning, high-quality components

The KOOP brand is positioned in the high-end diesel engine market. The key components are all produced in cooperation with well-known suppliers, starting from raw materials to ensure high-quality products.

Easy maintenance and low operating costs

Easy maintenance, convenient access to the engine, high combustion efficiency, low fuel consumption, high torque, strong power and low operating costs.

Lightweight design and more compact structure

The new generation of small diesel engines has a more reasonable design and greater output power under the same volume, making it easier to match various machines and meet a variety of uses.

agricultural machine

Outdoor Projects

Emergency Power Supply

Application Reserve

Ship and vehicle

product features

Ultra-low fuel consumption

It adopts the certified technology of top clearance oil pump and bottom inertia fuel injection pump, combined with the new combustion chamber and high combustion consumption rate, its fuel consumption economy is much lower than that of gasoline engine.


It has large reserve torque, strong power and inherent super overload capacity.

Low noise level

The well-designed gear transmission structure can greatly reduce vibration and noise, and the certified air filter significantly reduces intake and exhaust noise.


Exquisite craftsmanship and strict quality concept ensure product safety.

Wide range of applications

A variety of output formats are available for customers to choose

Low noise level

The well-designed gear transmission structure can greatly reduce vibration and noise, and the certified air filter significantly reduces intake and exhaust noise.

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Koop Power Machinery Co., Ltd. is a company specializing in the research and development and manufacturing of small power engines and emergency electricity supply systems. The core team is composed of senior technical experts and management elites in the industry, with leading design capabilities and rich engineering practice in the fields of internal combustion engines and power electronics technology. Through unremitting efforts, Kepu has developed into a leading professional supplier of small power engines and mobile power supply industries in China.
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