Taking Care Of Unexpected Problems; Technical Information; Serial Number Location - Honda GX120 Owner's Manual

05/05/17 13:23:38 32Z4F800_011

TAKING CARE OF UNEXPECTED PROBLEMS

ENGINE WILL Possible Cause
NOT START
1. Check control Fuel valve and/
positions. or fuel filler cap
vent valve OFF.
Choke open.
Engine switch
OFF.
2. Check fuel. Out of fuel.
Bad fuel; engine
stored without
treating or
draining
gasoline, or
refueled with
bad gasoline.
3. Remove and Spark plug faulty,
inspect spark fouled, or
plug. improperly
gapped.
Spark plug wet
with fuel
(flooded engine).
4. Take engine to Fuel filter
an authorized restricted,
Honda carburetor
servicing malfunction,
dealer, or refer ignition
to shop malfunction,
manual. valves stuck, etc.
ENGINE LACKS Possible Cause
POWER
1. Check air filter. Filter element(s)
restricted.
2. Check fuel. Bad fuel; engine
stored without
treating or
draining
gasoline, or
refueled with
bad gasoline.
3. Take engine to Fuel filter
an authorized restricted,
Honda carburetor
servicing malfunction,
dealer, or refer ignition
to shop malfunction,
manual. valves stuck, etc.
TECHNICAL & CONSUMER INFORMATION
Correction

TECHNICAL INFORMATION

Turn valve(s) ON.

Serial Number Location

Record the engine serial
number, type and purchase
Move lever to date in the space below. You
CLOSED position will need this information when
unless the engine ordering parts and when
is warm. making technical or warranty
Turn engine switch inquiries.
to ON position.
Refuel (p. 6).
Drain fuel tank and
carburetor (p. 10).
Refuel with fresh
gasoline(p. 6). Engine serial number: __ __ __ __
Engine type: ___ ___ ___ ___
Gap or replace Date Purchased: ______ / ______ / ______
spark plug (p. 8).
Carburetor Modifications for High Altitude Operation
Dry and reinstall
spark plug. Start At high altitude, the standard carburetor air-fuel mixture will be
engine with too rich. Performance will decrease, and fuel consumption will
throttle lever in increase. A very rich mixture will also foul the spark plug and
MAX. position. cause hard starting. Operation at an altitude that differs from that
Replace or repair at which this engine was certified, for extended periods of time,
faulty components may increase emissions.
as necessary.
High altitude performance can be improved by specific
modifications to the carburetor. If you always operate your engine
at altitudes above 1,500 meters (5,000 feet), have your servicing
dealer perform this carburetor modification. This engine, when
operated at high altitude with the carburetor modifications for
Correction high altitude use, will meet each emission standard throughout its
useful life.
Clean or replace
filter element(s) Even with carburetor modification, engine horsepower will
(p. 8). decrease about 3.5% for each 300-meter (1,000-foot) increase in
Drain fuel tank and altitude. The effect of altitude on horsepower will be greater than
carburetor (p. 10). this if no carburetor modification is made.
Refuel with fresh
gasoline (p. 6).
When the carburetor has been modified for high altitude operation,
the air-fuel mixture will be too lean for low altitude use. Operation
at altitudes below 1,500 meters (5,000 feet) with a modified
Replace or repair carburetor may cause the engine to overheat and result in serious
faulty components engine damage. For use at low altitudes, have your servicing
dealer return the carburetor to original factory specifications.
as necessary.
ENGLISH
SERIAL NUMBER &
ENGINE TYPE LOCATION
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