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Home Models Gx120
FEATURES | SPECIFICATIONS | DIMENSIONS | PTO | PERFORMANCE CURVES | OWNERS MANUAL | SUPPORT
GX120/160/200
Quality and performance come standard.
Honda’s GX series engines are legendary for superior reliability and performance. And there’s no doubt about it the GX120, 160, and 200 live up to the legend. Low noise levels, low vibration, and low emissions – without sacrificing power output or performance.

COMMON APPLICATIONS
Commercial lawn and garden equipment
Tillers / cultivators
Generators
Construction / industrial equipment
Agricultural equipment
Water pumps
Pressure Washers
Forestry equipment
Features

FUEL EFFICIENT, HIGH OUTPUT OPERATION
Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficency
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
Reduced piston weight and precision-balanced crankshaft result in lower engine vibration (GX160)
Ball bearing supported crankshaft for greater stability

EXCEPTIONALLY QUIET
Aluminum push rods reduce both valve clearance and noise level. (GX160)
Muffler and breather valve enhancements reduce noise and improve sound quality
Reduced mechanical noise due to light weight, noise-reducing materials
Forged steel crankshaft and rigid crankcase
Helical cut gears
Sophisticated air intake system

PROVEN RELIABILITY
Oil Alert Learn More
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
Ergonomic, easy to grip recoil rope design
Automatic mechanical de-compression system Learn More
EMISSIONS COMPLIANT
Lower emissions, same power output!
No catalyst necessary

AVAILABLE OPTIONS
Low profile versions (Select models)
Gear reduction options
Electic start (Select models)
Electric start (Select models)
Spark arrester available
Charge and lamp coils with multiple output options available
Cyclone Air Cleaner available ( Select models)
SPECIFICATIONS
GX120
GX160
GX200
Engine Type Air-cooled 4-stroke OHV Air-cooled 4-stroke OHV Air-cooled 4-stroke OHV
Bore x Stroke 60 X 43.5 mm 68 X 45 mm 68 X 54 mm
Displacement 122 cm3 163 cm3 196 cm3
Net Power Output* 3.2 hp (2.4 kW) @ 3,600 rpm 4.8 hp (3.6 kW) @ 3,600 rpm 5.8 hp (4.3 kW) @ 3,600 rpm
Net Torque 5.5 lb-ft (7.3 Nm) @ 2,500 rpm 7.6 lb-ft (10.3 Nm) @ 2,500 rpm 9.1 lb-ft (12.4 Nm) @ 2,500 rpm
PTO Shaft Rotation Counterclockwise (from PTO shaft side) Counterclockwise (from PTO shaft side) Counterclockwise (from PTO shaft side)
Compression Ratio 8.31 9.0 1 8.51
Lamp/Charge coil options 25W, 50W 50W / 1A, 7A, 18A 25W, 50W / 1A, 7A, 18A
Carburetor Butterfly Butterfly Butterfly
Ignition System Transistorized magneto Transistorized magneto Transistorized magneto
Starting System Recoil Starter Recoil Starter Recoil Starter
Lubrication System Splash Splash Splash
Governor System Mechanical Centrifugal Mechanical Mechanical
Air Cleaner Dual Element Dual Element Dual element
Oil Capacity 0.59 US qt. (0.56 L) 0.61 US qt. (0.58 L) 0.63 US qt (0.6l)
Fuel Tank Capacity 2.1 U.S. qts (2.0 liters) 3.3 U.S. qts (3.1 liters) 3.3 U.S. qts (3.1 liters)
Fuel Unleaded 86 octane or higher Unleaded 86 octane or higher Unleaded 86 octane or higher
Dry Weight 28.9 lbs. (13.2 kg) 33 lbs. (15.1 kg) 35 lbs. (16.1 kg)WARNING California Prop 65 Info
DIMENSIONS
GX120
GX160
GX200
Length (min) 11.7” (297 mm) 12.2 (312 mm) 12.6 (321mm)
Width (min) 13.6” (346 mm) 14.3 (362 mm) 14.8 (376mm)
Height (min) 13.0” (329 mm) 13.6 (346 mm) 13.6” (346 mm)
PTO
GX120
GX160
GX200
L type Reduction type PTO View Details Reduction type PTO View Details Reduction type PTO View Details
Q type Straight shaft View Details Straight shaft View Details Straight shaft View Details
S type Straight shaft (metric) View Details Straight shaft (metric) View Details
T type Straight shaft View Details Straight shaft View Details Straight shaft View Details
AR type Rammer View Details
Performance Curves
GX120 Performance Curve
GX160 Performance Curve
GX200 Performance Curve
The SAE J1349 standard measures net horsepower with the manufacturer’s production muffler and air cleaner in place. Net horsepower more closely correlates with the power the operator will experience when using a Honda engine powered product. The power rating of the engines indicated in this document measures the net power output at 3600 rpm(7000 rpm for model GXH50, GXV50, GX25 and GX35) and net torque at 2500 rpm, as tested on a production engine. Mass production engines may vary from this value. Actual power output for the engine installed in the final machine will vary depending on numerous factors, including the operation speed of the engine in application, environmental conditions, maintenance and other variables.

Owners Manuals
GX120
General Applications
English
English, French & Spanish language manual
GX160
General Applications
English
English, French & Spanish language manual
GX200
General Applications
English, French & Spanish language manual
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