Manual Honda Honda Engines GS190 (page 10 of 40) (English, French, Spanish)

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ENGLISH

TECHNICAL INFORMATION

SERIAL NUMBER AND TYPE LOCATION

See figures on page 1.

Record the engine serial number and type in the space below. You will

need this information when ordering parts and when making technical

or warranty inquiries.

RADIO FREQUENCY INTERFERENCE LABEL (CANADA)

This engine complies with Canadian radio frequency interference

regulations, ICES-002.

Carburetor Modifications for High Altitude Operation

At high altitude, the standard carburetor air-fuel mixture will be too

rich. Performance will decrease, and fuel consumption will increase. A

very rich mixture will also foul the spark plug and cause hard starting.

Operation at an altitude that differs from that at which this engine was

certified, for extended periods of time, may increase emissions.

High altitude performance can be improved by specific modifications

to the carburetor. If you always operate your engine at altitudes above

5,000 feet (1,500 meters), have your servicing dealer perform this

carburetor modification. This engine, when operated at high altitude

with the carburetor modifications for high altitude use, will meet each

emission standard throughout its useful life.

Even with carburetor modification, engine horsepower will decrease

about 3.5% for each 1,000-foot (300-meter) increase in altitude. The

effect of altitude on horsepower will be greater than this if no

carburetor modification is made.

When using auto throttle type engines in high altitude applications,

the ability to idle down to 2500 rpm could be diminished. See your

servicing dealer for information on adjustments if your auto throttle

unit does not idle down with the load released or has trouble returning

to full rpm with the load applied.

NOTICE

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 5,000 feet (1,500 meters) with a modified carburetor

may cause the engine to overheat and result in serious engine

damage. For use at low altitudes, have your servicing dealer return

the carburetor to original factory specifications.

EMISSION CONTROL SYSTEM INFORMATION

Source of Emissions

The combustion process produces carbon monoxide, oxides of

nitrogen, and hydrocarbons. Control of hydrocarbons and oxides of

nitrogen is very important because, under certain conditions, they

react to form photochemical smog when subjected to sunlight. Carbon

monoxide does not react in the same way, but it is toxic.

Honda utilizes appropriate air/fuel ratios and other emissions control

systems to reduce the emissions of carbon monoxide, oxides of

nitrogen, and hydrocarbons. Additionally, Honda fuel systems utilize

components and control technologies to reduce evaporative

emissions.

U.S. and California Clean Air Acts, and Canadian

Environment Protection Act

U.S. EPA, California, and Canadian regulations require all

manufacturers to furnish written instructions describing the operation

and maintenance of emissions control systems.

The following instructions and procedures must be followed in order to

keep the emissions from your Honda engine within the emissions

standards.

Tampering and Altering

Tampering is a violation of Federal and California law.

Tampering with or altering the emissions control system may increase

emissions beyond the legal limit. Among those acts that constitute

tampering are:

• Removal or alteration of any part of the intake, fuel, or exhaust

systems.

• Altering or defeating the speed-adjusting mechanism to cause the

engine to operate outside its design parameters.

Problems That May Affect Emissions

If you are aware of any of the following symptoms, have your engine

inspected and repaired by your servicing dealer.

• Hard starting or stalling after starting

• Rough idle

• Misfiring, backfiring under load, or afterburning

• Black exhaust smoke or high fuel consumption

Replacement Parts

The emissions control systems on your new Honda engine were

designed, built, and certified to conform with EPA, California, and

Canadian emissions regulations. We recommend the use of Honda

Genuine parts whenever you have maintenance done. These

original-design replacement parts are manufactured to the same

standards as the original parts, so you can be confident of their

performance. The use of replacement parts that are not of the original

design and quality may impair the effectiveness of your emissions

control system.

A manufacturer of an aftermarket part assumes the responsibility that

the part will not adversely affect emissions performance. The

manufacturer or rebuilder of the part must certify that use of the part

will not result in a failure of the engine to comply with emissions

regulations.

Maintenance

Follow the MAINTENANCE SCHEDULE on page 10. Remember this

schedule is based on the assumption that your machine will be used

for its designed purpose. Sustained high-load or high-temperature

operation, or use in unusually wet or dusty conditions, will require

more frequent service.

MODEL SERIAL NUMBER TYPE

GS160 or GS190

__ __ __ __ __– __ __ _ __ __ __ __ _ __

Date of purchase

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Honda Honda Engines GS190 Manual

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