Honda GX120 2021 Owner's Manual

Pages 60

Year 2021

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Honda GX120 2021 Engine Specification

The Honda GX120 2021 engine is a robust and reliable power unit designed for a variety of industrial and commercial applications. This air-cooled, four-stroke, single-cylinder engine offers a displacement of 118 cm³, providing an optimal balance of power and efficiency. The OHV (Overhead Valve) design enhances combustion efficiency, resulting in lower fuel consumption and reduced emissions, adhering to stringent environmental standards. With a bore and stroke of 60 mm x 42 mm, the engine delivers a maximum net power output of 3.5 horsepower at 3,600 RPM and a net torque of 7.6 Nm at 2,500 RPM.

The engine features a horizontal shaft configuration, allowing for versatile mounting options in various equipment. It operates with a forced-air cooling system, ensuring reliable performance even under demanding conditions. The GX120 is equipped with a recoil starter, providing easy and dependable starting capability. Its fuel tank capacity of 2.0 liters ensures extended operation between refueling, making it ideal for long-duration tasks.

Reliability is further enhanced by the engine's high-quality materials and construction, including a cast iron cylinder sleeve and a dual-element air cleaner. These features contribute to the engine's longevity and durability, even in challenging environments. The Honda GX120 also includes an automatic mechanical decompression system, which reduces the pulling force required for starting. Maintenance is straightforward, with easily accessible parts and a simplified design, minimizing downtime and service costs. Overall, the Honda GX120 2021 engine is a compact yet powerful solution for powering industrial machinery, construction equipment, and other heavy-duty applications, embodying Honda's commitment to innovation and quality.

Honda GX120 2021 Engine F.A.Q.

How do I start the Honda GX120 2021 engine?

To start the Honda GX120 2021 engine, ensure the fuel valve is open, the choke is engaged if the engine is cold, and the ignition switch is on. Pull the recoil starter grip briskly to start the engine.

What type of oil should I use for the Honda GX120 engine?

Use SAE 10W-30 oil for general use in the Honda GX120 engine. Ensure the oil is API service category SJ or later.

How often should I change the oil in my Honda GX120 engine?

Change the oil after the first 20 hours of operation, then every 100 hours of operation or every season, whichever comes first.

What is the recommended spark plug for the Honda GX120?

The recommended spark plug for the Honda GX120 is NGK BPR6ES or an equivalent.

How do I troubleshoot if the engine won't start?

Check the fuel level, ensure the fuel valve is open, verify the ignition switch is on, inspect the spark plug for fouling, and ensure the air filter is clean.

How do I clean the air filter on a Honda GX120 engine?

Remove the air filter cover, take out the filter element, and clean it with soapy water. Rinse thoroughly and allow it to dry completely before reinstalling.

What should I do if my Honda GX120 engine is overheating?

Ensure the engine is not overloaded, check the cooling air intake for obstructions, and verify that the oil level is adequate.

How can I improve fuel efficiency for my Honda GX120?

Maintain regular engine tune-ups, keep the air filter clean, and use the recommended oil type. Avoid running the engine at higher loads than necessary.

What routine maintenance is required for the Honda GX120 engine?

Regularly check and change the oil, clean or replace the air filter, inspect and replace the spark plug if needed, and ensure the fuel system is in good condition.

How do I winterize the Honda GX120 engine?

Drain the fuel or add a fuel stabilizer, change the oil, clean the engine, and store it in a dry place. Remove the spark plug, add a tablespoon of oil into the cylinder, and pull the starter cord slowly to distribute the oil.