Contents

INTRODUCTION
SAFETY MESSAGES
- DAMAGE PREVENTION MESSAGES
CONTENTS
SAFETY INFORMATION
SAFETY LABEL LOCATIONS
COMPONENT & CONTROL LOCATIONS
FEATURES
- OIL ALERT SYSTEM (applicable types)
- CIRCUIT PROTECTOR (applicable types)
BEFORE OPERATION CHECKS
- IS YOUR ENGINE READY TO GO?
OPERATION
- SAFE OPERATING PRECAUTIONS
- STARTING THE ENGINE
- STOPPING THE ENGINE
- SETTING ENGINE SPEED
SERVICING YOUR ENGINE
- THE IMPORTANCE OF MAINTENANCE
- MAINTENANCE SAFETY
- SAFETY PRECAUTIONS
- MAINTENANCE SCHEDULE
- REFUELING
- ENGINE OIL
- REDUCTION CASE OIL (applicable types)
- AIR CLEANER
HELPFUL TIPS & SUGGESTIONS
- STORING YOUR ENGINE
- TRANSPORTING
TAKING CARE OF UNEXPECTED PROBLEMS
- ENGINE WILL NOT START
- ENGINE LACKS POWER
- FUSE REPLACEMENT (applicable types)
TECHNICAL INFORMATION
- SERIAL NUMBER LOCATION
- REMOTE CONTROL LINKAGE
- CARBURETOR MODIFICATIONS FOR HIGH ALTITUDE OPERATION
- EMISSION CONTROL SYSTEM INFORMATION
- SPECIFICATIONS
- TUNE-UP SPECIFICATIONS
- QUICK REFERENCE INFORMATION
- WIRING DIAGRAMS
CONSUMER INFORMATION
- Warranty and Distributor/Dealer Locator Information
- Customer Service Information
FRANAIS
ESPAOL

Honda GX120 2017 Owner's Manual

Pages 60

Year 2017

Language(s)

of 60

Honda GX120 2017 Engine Specification

The Honda GX120 2017 engine is a robust and reliable power unit designed for a wide range of industrial and commercial applications. Featuring a compact and lightweight design, the GX120 is a four-stroke, single-cylinder engine with an overhead valve (OHV) configuration. It boasts a displacement of 118cc and delivers a net power output of 3.5 horsepower at 3,600 RPM, making it suitable for various small machinery applications. The engine’s bore and stroke measure 60mm and 42mm, respectively, optimizing its performance and fuel efficiency.

The GX120 is equipped with a recoil starter system, ensuring easy and dependable starting in diverse conditions. It utilizes a transistorized magneto ignition system for reliable spark delivery and improved combustion efficiency. The engine’s carburetor is a horizontal-type with a butterfly valve, contributing to its smooth operation. An efficient air-cooled cooling system is employed, which helps maintain optimal operating temperatures and extends engine life.

Fuel efficiency is a hallmark of the GX120, thanks to its precision-engineered components and design. The engine's fuel tank has a capacity of 2 liters, allowing for extended operation periods without frequent refueling. The lubrication system is splash type, which efficiently distributes oil to critical engine components, minimizing wear and enhancing durability. The Honda GX120 2017 engine complies with major emissions standards, underscoring Honda’s commitment to environmentally friendly technology.

Overall, the Honda GX120 2017 engine is a versatile and durable choice for powering equipment such as generators, pumps, and small construction machinery, providing a blend of performance, efficiency, and reliability that professionals and enthusiasts have come to expect from Honda’s line of small engines.

Honda GX120 2017 Engine F.A.Q.

How do I perform regular maintenance on the Honda GX120 engine?

Regular maintenance includes checking and changing the oil every 20 hours of operation, cleaning the air filter, and inspecting the spark plug. Ensure all parts are free of damage and debris.

What type of oil should I use in my Honda GX120 engine?

Use SAE 10W-30 oil for general use. For temperatures under 10°C (50°F), SAE 5W-30 can be used. Always refer to the owner’s manual for oil specifications.

How can I troubleshoot starting issues with the Honda GX120 engine?

Check the fuel level, ensure the spark plug is clean and functioning, and verify that the air filter is not clogged. Make sure the engine switch is in the ON position.

What is the proper way to store the Honda GX120 engine when not in use?

Drain the fuel tank and carburetor, change the oil, clean the engine, and store it in a dry location. Cover the engine to protect it from dust and moisture.

How often should I replace the spark plug on the Honda GX120 engine?

Replace the spark plug every 100 hours of operation or annually, whichever comes first. Use an NGK BPR6ES or equivalent.

What are the signs that the air filter needs cleaning or replacement in the GX120 engine?

If you notice reduced engine performance, difficulty starting, or black smoke from the exhaust, the air filter may need cleaning or replacement.

How do I adjust the idle speed on a Honda GX120 engine?

To adjust the idle speed, locate the idle adjustment screw on the carburetor. Turn it clockwise to increase idle speed or counterclockwise to decrease it.

What should I do if the Honda GX120 engine overheats?

Stop the engine immediately, check for obstructions in the air cooling system, ensure there is enough oil, and verify that the air filter is not clogged.