Honda GX120 Engine Specs
The Honda GX120 engine is a powerful and reliable small engine that is commonly used in a variety of applications, including pressure washers, generators, and small construction equipment. It is known for its durability, efficiency, and ease of use. In this article, we will explore the engine configuration, engine oil specs, and service intervals of the Honda GX120 engine.
Engine Configuration
The Honda GX120 engine is a single-cylinder, four-stroke engine with a displacement of 118cc. It features an overhead valve (OHV) design, which allows for better fuel efficiency and reduced emissions. The engine is air-cooled, meaning it relies on airflow to dissipate heat and maintain optimal operating temperatures.
The GX120 engine has a bore and stroke of 60mm x 42mm, providing a balanced combination of power and torque. It is equipped with a recoil starter, making it easy to start the engine with a simple pull of the starter cord.
Engine Oil Specs
Proper lubrication is essential for the smooth operation and longevity of the Honda GX120 engine. It is recommended to use a high-quality four-stroke engine oil that meets or exceeds the requirements of API service classification SJ or later. The oil should have a viscosity grade of SAE 10W-30 for general use, or SAE 5W-30 for cold weather conditions.
When changing the engine oil, it is important to drain the old oil while the engine is warm to ensure thorough drainage. The engine oil capacity of the GX120 engine is approximately 0.58 liters (0.61 US quarts). Be sure to use a suitable oil filter if your engine is equipped with one.
Service Intervals
Regular maintenance and servicing are crucial for keeping the Honda GX120 engine in optimal condition. Here are some recommended service intervals to follow:
- Oil Change: It is recommended to change the engine oil every 50 hours of operation or at least once a year, whichever comes first. Regular oil changes help remove contaminants and ensure proper lubrication.
- Air Filter: Clean or replace the air filter every 25 hours of operation or as needed. A clogged air filter can restrict airflow and affect engine performance.
- Spark Plug: Inspect and clean or replace the spark plug every 100 hours of operation or as needed. A worn-out spark plug can cause poor ignition and reduced engine power.
- Fuel Filter: Check and replace the fuel filter every 200 hours of operation or as needed. A clogged fuel filter can restrict fuel flow and affect engine performance.
- Valve Clearance: Adjust the valve clearance every 300 hours of operation or as needed. Proper valve clearance ensures efficient combustion and prevents valve damage.
By following these service intervals and using genuine Honda parts and accessories, you can ensure the longevity and reliable performance of your Honda GX120 engine.
| Engine Specifications | Value |
|---|---|
| Engine Type | Single-cylinder, four-stroke |
| Displacement | 118cc |
| Engine Cooling | Air-cooled |
| Starting System | Recoil starter |
| Bore x Stroke | 60mm x 42mm |
| Oil Capacity | 0.58 liters (0.61 US quarts) |
In conclusion, the Honda GX120 engine is a reliable and efficient small engine that offers excellent performance in a variety of applications. By understanding its engine configuration, following the recommended engine oil specs, and adhering to the service intervals, you can ensure the longevity and optimal performance of your Honda GX120 engine.
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