Honda GX120 User Manual

ENGINE SAFETY ........................................................................................ 5
IMPORTANT SAFETY INFORMATION
................................................. 5
CONTROLS
& FEATURES ......................................................................... 7
COMPONENT & CONTROL LOCATIONS ............................................. 7
CONTROLS ............................................................................................. 8
Fuel Valve Lever
................................................................................. 8
Engine Switch
..................................................................................... 9
Choke Lever
...................................................................................... 10
Throttle Lever
................................................................................... 11
Recoil Starter Grip
............................................................................ 11
FEATURES
............................................................................................ 12
Oil Alee System (applicable engine types)
.................................. 12
Circuit Breaker (QXE2 type only)
.................................................... 12
BEFORE OPERATION
.............................................................................. 13
IS YOUR ENGINE READY TO GO? ...................................................... 13
Check the General Condition
of the Engine ................................... 13
Check the Engine
.............................................................................. 14
Check the Equipment Powered
by This Engine ............................. 14
OPERATION
............................................................................................. 15
SAFE OPERATING PRECAUTIONS
.................................................... 15
STARTING THE ENGINE
..................................................................... 15
STOPPING THE ENGINE
..................................................................... 19
SETTING ENGINE SPEED
.................................................................... 20
SERVICING YOUR ENGINE
..................................................................... 21
THE IMPORTANCE OF MAINTENANCE
............................................. 21
MAINTENANCE SAFETY
..................................................................... 22
MAINTENANCE SCHEDULE
............................................................... 23
REFUELING
........................................................................................... 24
FUEL RECOMMENDATIONS
.............................................................. 25
ENGINE OIL LEVEL CHECK
................................................................. 26
ENGINE OIL CHANGE
.......................................................................... 27
ENGINE OIL RECOMMENDATIONS
................................................... 28
TRANSMISSION OIL LEVEL CHECK(applicab1e models)
................. 29
TRANSMISSION
OIL CHANGE(1/2 reduction type) .......................... 30
AIR FILTER INSPECTION
..................................................................... 31
AIR CLEANER SERVICE
....................................................................... 32
Dual-Filter-Element Types
............................................................... 32
Oil-Bath Type
.................................................................................... 34
3

Honda GX120 Specifications

General

Bore x Stroke	60 mm x 42 mm
Compression Ratio	8.5:1
PTO Shaft Rotation	Counterclockwise (from PTO shaft side)
Air Cleaner	Dual element
Ignition System	Transistorized magneto
Starting System	Recoil starter
Fuel System	Carburetor
Lubrication System	Splash
Engine Type	4-stroke, single cylinder, overhead valve (OHV)
Displacement	118 cm3
Net Power Output	2.6 kW (3.5 HP) at 3, 600 rpm
Net Torque	7.3 Nm (5.4 lbs ft) at 2, 500 rpm
Dimensions (L x W x H)	305 mm x 355 mm x 355 mm (12 in x 14 in x 14 in)