Honda GX120 Quick Reference Manual

GX120
Honda
Brand
Honda
Model
GX120
Type
Quick Reference Manual

This manual is also suitable for

Honda GX120: A Powerful and Versatile Engine for Diverse Applications

The Honda GX120 is a reliable and efficient single-cylinder engine designed to provide exceptional performance for a variety of tasks. With its user-friendly features and robust construction, it caters to both professional and hobbyist users. Whether you need it for powering construction equipment, generators, water pumps, or lawnmowers, the GX120 delivers dependable operation and durability.

Key Features and Capabilities:

  • Easy Starting: Equipped with a user-friendly recoil starter, the GX120 ensures effortless engine ignition with a smooth pull.

Honda GX120: A Powerful and Versatile Engine for Diverse Applications

The Honda GX120 is a reliable and efficient single-cylinder engine designed to provide exceptional performance for a variety of tasks. With its user-friendly features and robust construction, it caters to both professional and hobbyist users. Whether you need it for powering construction equipment, generators, water pumps, or lawnmowers, the GX120 delivers dependable operation and durability.

Key Features and Capabilities:

  • Easy Starting: Equipped with a user-friendly recoil starter, the GX120 ensures effortless engine ignition with a smooth pull.
Engine
Starting the Engine (single cylinder GX models)
Check the fuel and engine oil level before starting the engine.
Turn the fuel valve lever
to the ON position.
Move the throttle control lever
slightly to the left.
Move the choke lever
to the CLOSED position.
Turn the engine switch
to the ON position.
Gradually move the choke lever
to the OPEN position as the engine
warms up.
Pull the starter grip lightly
until you feel resistance,
and then pull briskly.
Read and understand the Owner’s Manual before operating the engine.
Safety! be careful!
How to start
12Choke ON/OFF
3
Throttle lever
5Start
6
Fuel cock ON
4Choke off
7
Check engine oil Switch ON
Safety! Be careful!Safety! Be careful!
Do not use inside houseDo not use inside house
Read and understand the Owner
Safety! be careful!
Quick Reference GuideQuick Reference Guide for Operation
3 4
7
6
1
2
1st step1st step
2nd step2nd step
Fill the oil to
the upper limit.
©Honda Motor Co., Ltd.2012
S2Z0T100
52
How to stop
5
MIN
MAX
MAX
GX120-GX390GX120-GX390
Spark Plug Engine Oil
1
2
3
4
1
2
3
Prolonged storage
1
2
3
Air Cleaner Element
Squeeze
32 61 Soak 4Squeeze 5Oil
4
Read and understand the Owner’s Manual before operating the engine.
Engine Oil
Item
Regular service
Period
Air Cleaner
Spark Plug
Spark arrester
(
applicable types
)
Idle speed
Fuel tank and filter
Combustion chamber
Fuel filtration cup
Valve Clearance
Fuel tube
Before
each use
First month
or 20Hours
Every 500Hours
Every 2years
Every
3 months
or 50Hours
Every
6 months
or 100Hours
Every year
or 300Hours
check
fill/add replace replace
replace
check readjust
check readjust
check clean
check readjust
clean
clean
clean
Maintenance Schedule
Take the engine to
a Honda servicing dealer.
Clean the aircleaner when used in dusty areas every 10hours or once a day
Spark Plug
Engine Oil
Read and understand the Owner
Every
3 months
or 50Hours
Every
6 months
Every year
Maintenance Schedule
Quick Reference GuideQuick Reference Guide
for Maintenance
21 3 4
1
1
2
3 4
1 2
23
©Honda Motor Co., Ltd.2012
S2Z0T200
API service category SJ or later
SAE 10W-30 is recommended for general use
GX120-GX390GX120-GX390
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Honda GX120 Quick Reference Manual

GX120
Honda
Brand
Honda
Model
GX120
Type
Quick Reference Manual
This manual is also suitable for

Honda GX120: A Powerful and Versatile Engine for Diverse Applications

The Honda GX120 is a reliable and efficient single-cylinder engine designed to provide exceptional performance for a variety of tasks. With its user-friendly features and robust construction, it caters to both professional and hobbyist users. Whether you need it for powering construction equipment, generators, water pumps, or lawnmowers, the GX120 delivers dependable operation and durability.

Key Features and Capabilities:

  • Easy Starting: Equipped with a user-friendly recoil starter, the GX120 ensures effortless engine ignition with a smooth pull.
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