186F diesel engine with strong power and advanced technology
Good fuel economy and low operating cost
Durable and sturdy, with strong environmental adaptability
Emission friendly, low vibration noise
186F diesel engine is a versatile power source with mature technology, sturdy durability, and good economy. Single cylinder 4 stroke diesel engine is widely used in fields such as agriculture, engineering machinery, and generator sets due to its strong power, excellent environmental adaptability, and low fuel consumption
186F Diesel Engine Features & Benefits
DI Combustion for Stronger Torque and Lower Fuel Use The direct injection system optimizes atomization and combustion efficiency, coupled with a 19:1 compression ratio, providing confident torque at low speeds, better cold start reliability, and reducing fuel consumption during long-term operation. This core technological profile is a defining characteristic of the high-performance 186F diesel engine, making it an ideal and efficient power source for applications demanding robust low-end torque and operational economy. |
Bigger Fuel & Oil Capacities, Less Downtime In a robust single cylinder 4 stroke diesel engine, a generously sized fuel tank supports continuous operation, while a high-capacity oil sump provides stable lubrication during long periods of load. This design philosophy ensures durability and helps you maintain fast and predictable maintenance routines. These operational advantages are engineered into our core engine platforms, exemplified by the high-torque 456cc model as well as the efficient 418cc diesel engine, ensuring reliable performance across different power requirements. |
Dual Speeds & PTO Output for Fast System Matching A key advantage of the single cylinder air cooled diesel engine is that its crankshaft is designed for direct connection to other machines such as alternators and pumps. This configuration simplifies engineering design, accelerates system integration, and reduces overall system costs. The inherent simplicity and robust output of the single-cylinder, air-cooled platform make it particularly well-suited for this direct-drive approach, providing a compact and cost-effective power core for a wide range of equipment. |
186F Diesel Engine Technical Specifications
| Model No | YD186F/FE 418CC 10HP Single Cylinder 4 Stroke Air Cooled Diesel Engine | ||
| Engine Type | Air Cooled Single Cylinder 4-Stroke Direct Injection | ||
| Bore*Stroke | mm | 86*75 | |
| Displacement | cc | 418 | |
| Compression Ratio | 19:01 | ||
| Rated Output | KW/HP | 5.8/8.5 | 6.6/9 |
| Max Output | KW/HP | 7.3/9.9 | 7.9/10.8 |
| Rotation Speed | RPM | 3000 | 3600 |
| Fuel Consumption | L/H | ||
| Fuel Type | Diesel; 0# (4℃≦AT≦45℃) or-10# (-5℃≦AT≦4℃) | ||
| Fuel Tank Capacity | L | 5.5 | |
| Lube Type | Above CD Grade or SAE10W-30, 15W-40 | ||
| Lube Capacity | L | 1.65 | |
| Starting System | F: Manual Starter, E: Electric Starter | ||
| Power-Take-Off | Crankshaft | ||
| Dimension (L×W×H) | mm | 500×460×555 | |
| Net Weight | Kgs | F:47 FE:53 | |
AT: Ambient Temperature
Proven Performance in Real-World Applications

Portable Generators
This robust single cylinder 4 stroke diesel engine delivers the ideal balance of fuel economy, durability, and consistent torque output, making it perfectly suited for driving portable generators for residential, commercial, and job site applications.

Engineering Equipment
Single cylinder air cooled diesel engine provides the compact, durable, and high-torque power essential for driving equipment like road cutters, rollers, and concrete mixers.

Industrial Tools
186F diesel engine, serves as the ideal power source for tools like compressors, cutters, and high-pressure washers. Its robust, radiator-free design delivers consistent high-torque power for demanding, continuous-duty industrial applications.

Emergency or Field Use
186F diesel engine is crucial for emergency power. This robust 418cc diesel engine provides durable, fuel-efficient, and quick-starting performance, making it ideal for mobile pumps, lighting, and backup generators in demanding field operations.
Tailored Solutions, Customization & Packaging
OEM/ODM Customization Available
We offer full customization services for single cylinder air cooled diesel engine to meet your market and branding needs:
● Color & Labeling: Match your brand color or add custom decals.
● Starter Options: Manual or electric start configurations.
● Output Interface: Custom PTO dimensions, shafts, or flange types.
● Fuel & Oil Specs: Local fuel compatibility and labeling customization.
● Documentation: User manuals, language customization, and branded packaging.
Safe Delivery, Ready to Use
Each 186F diesel engine unit is securely packed in reinforced cartons or wooden crates with optional steel bases. Custom packaging and labeling are available for bulk OEM shipments.

FAQs About 186F Diesel Engine
Q1: What is the minimum order quantity (MOQ)?
A1: Standard single cylinder 4 stroke diesel engine MOQ is 10 units. For custom color, labeling, or shaft specifications, a higher MOQ may apply.
Q2: What fuel type should I use?
A2: Use 0# diesel for 4°C–45°C ambient temperature or -10# diesel for -5°C–4°C environments to ensure optimal performance and cold start reliability.
Q3: What is the warranty period?
A3: We provide a 1-year or 1000-hour warranty (whichever comes first) covering manufacturing defects.
Q4: What are the maintenance requirements?
A4: Check and replace oil regularly (SAE 10W-30 / 15W-40, above CD grade) and keep the air filter clean to maintain efficiency and longevity.
Q5: Can this 186f diesel engine be directly connected to a generator or pump?
A5: Yes. It features a PTO crankshaft output, compatible with most coupling standards. Custom shaft options are available upon request.
Q6: What are the key specifications and primary applications of the YD186F engine?
A6: The YD186F is a powerful and efficient single cylinder 4 stroke air cooled diesel engine with a displacement of 418cc. It delivers a rated power of 6.6 kW (approximately 9.0 HP) and is designed for demanding continuous-duty cycles. Its high-torque output and robust construction make it an ideal prime mover for Portable & Standby Generators (6-8 kW range), high-capacity Diesel Water Pumps for irrigation, and various Agricultural Equipment.