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ID # 31755254

Honda GX120

  • Honda GX120
  • Honda GX120
  • Honda GX120
  • Honda GX120
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Overview

Horizontal Crankshaft

Ready for almost anything, the GX120 offers low noise levels and emissions – along with plenty of power and reliability to boot.

Common Applications

  • Agricultural equipment
  • Commercial lawn and garden equipment
  • Construction/industrial equipment
  • Forestry equipment
  • Generators
  • Pressure washers
  • Tillers/cultivators
  • Water pumps
Specifications
Model
GX120
Category Name
Engines
Year
2025
Sale Type
New
Manufacturer
Honda
Fuel
Unleaded 86 octane or higher
Carburetor
Butterfly
Dry Weight
13.0 kg (29 lbs.)
Net Torque
5.5 lb-ft (7.3 Nm) @ 2,500 rpm
Air Cleaner
Dual element
Engine Type
Air-cooled 4-stroke OHC
Displacement
122 cm3
Oil Capacity
0.56 litres (0.59 U.S. qts)
Bore X Stroke
60 mm x 43.5 mm
Governor System
Mechanical
Ignition System
Transistorized magneto
Starting System
Recoil
Compression Ratio
8.5:1
Net Power Output*
3.2 HP (2.4 kW) @ 3,600 rpm
Fuel Tank Capacity
2.0 litres (2.1 U.S. qts)
Lubrication System
Splash
PTO Shaft Rotation
Counterclockwise (from PTO shaft side)
Lamp/Charge Coil Options
25W, 50W
features

FUEL-EFFICIENT,HIGH-OUTPUT OPERATION

  • Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficiency
  • OHV design for increased efficiency and optimal power transfer
  • High compression ratio for better fuel efficiency

SMOOTH PERFORMANCE

  • Precision-engineered components result in lower vibration
  • Ball bearing supported crankshaft for greater stability

EXCEPTIONALLY QUIET

  • Large capacity, multi-chamber exhaust system
  • Reduced mechanical noise due to light-weight, noise-reducing materials
  • Forged steel crankshaft and rigid crankcase
  • Sophisticated air intake system

PROVEN RELIABILITY

  • Oil alert
  • New carburetor chamber coating and carburetor filter help to protect against fuel impurities
  • Cast iron cylinder sleeve
  • High-quality materials, fit, and finish
  • Dual element air cleaner
  • Fuel Valve
  • 3-Year Limited Warranty

EASY TO USE AND MAINTAIN

  • Simple throttle control
  • Large fuel tanks
  • Large automotive type fuel cap
  • Dual oil drains and fill
  • Easy, convenient, heavy duty control box
  • Easily accessible spark plug

EASY STARTING

  • Heavy duty recoil starter
  • Automatic mechanical decompression system

EMISSIONS COMPLIANT

  • Lower emissions, same power output!
  • CARB and EPA certified
  • No catalyst necessary

AVAILABLE OPTIONS

  • Gear reduction options
  • Spark arrester available
dimension diagram

Honda GX120

performance curve

Honda GX120

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