Honda GX120 Series Engines

Portable power that professionals can depend on

PORTABLE PROFESSIONAL POWER

GX120 Series

Honda's line of GX120 series engines are trusted by professionals across a multitude of industries. GX120 engines power a wide variety of equipment including plate compactors, reel mowers, walk-behind edgers, concrete saws, pot pullers, aerators, pumps, pavement stripers, paint sprayers and more. Equipped with large fuel tanks for extended runtimes, heavy-duty recoil starters for dependable start-ups and precision engineered components for reduced noise and vibration, a GX120 engine is sure to keep the equipment you depend on running for years to come.

Overhead Valve (OHV) Design

The GX120's valves are located above the combustion chamber allowing for enhanced fuel mixture intake, more complete exhaust and a higher compression ratio. The OHV layout of Honda's GX120 engines results in greater power output, reduced cylinder distortion and more efficient oil consumption for longer maintenance intervals.

Heavy Duty Recoil Starter

The GX120's large, easy-to-grip recoil starter handle coupled with with Honda's automatic mechanical decompression system makes for easy starting every time.

Precision Engineered Components

Honda's high-quality parts are less-prone to wear and corrosion for a longer engine life and provide minimal vibration and increased stability during operation.

Air-Cooled

Simple, lightweight engine design that is easy to maintain

4-Stroke

No oil/gas mixing required for cleaner emissions and better fuel efficiency

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Engine Specifications

Discover the GX100's key performance characteristics and operating parameters

Displacement: 98.5cc
Net Power Output: 2.8 HP @ 3600 RPM
Net Torque: 4.2 lb-ft @ 3600 RPM
Compression Ratio: 8.5 : 1
Starting System: Recoil
Lubrication System: Splash
Carburetor Type: Float
Fuel Tank Capacity: 0.81 qt
Bore x Stroke: 56mm x 40mm
Weight: 28 lb

Engine

GX120 HX2

GX120 QX2

GX120 QXS2

GX120 SG24

GX120 SJD2

Crankshaft Diameter

3/4"

18mm

Crankshaft Length

1.97"

2-7/16"

2-27/64"

1.97"

Gear Reduction

6:1

Common Applications

Aerators, Pot Pullers, Reel Mowers, Sprayers, Pumps

Compactor Plates, Pumps, Reel Mowers, Concrete Saws

Paint Sprayers, Laser Striping Machines

Plate Compactors, Reel Mowers

Reel Mowers

Oil Alert

Muffler

Standard

Low Profile

Silent

Standard