Manual Honda Honda Engines GS190 (page 9 of 16) (English)

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TECHNICAL & CONSUMER INFORMATION

TECHNICAL INFORMATION

Serial Number and Type Location

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.

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 trimmer 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.

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.

Oxygenated Fuels

Some conventional gasolines are being blended with alcohol or an

ether compound. These gasolines are collectively referred to as

oxygenated fuels. To meet clean air standards, some areas of the

United States and Canada use oxygenated fuels to help reduce

emissions.

If you use oxygenated fuel, be sure it is unleaded and meets the

minimum octane rating requirements.

Before using an oxygenated fuel, try to confirm the fuel’s contents.

Some states/provinces require this information to be posted on the

pump.

The following are the EPA approved percentages of oxygenates:

If you notice any undesirable operating symptoms, try another service

station or switch to another brand of gasoline.

Fuel system damage or performance problems resulting from the use

of an oxygenated fuel containing more than the percentages of

oxygenates mentioned above are not covered under the Distributor’s

Limited Warranty (see page 11).

MODEL SERIAL NUMBER ENGINE TYPE

GS190 GCACA– ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

SERIAL

NUMBER

AND TYPE

LOCATION

SERIAL NUMBER TYPE

ETHANOL — (ethyl or grain alcohol) 10% by volume

You may use gasoline containing up to 10% ethanol

by volume. Gasoline containing ethanol may be

marketed under the name Gasohol.

MTBE — (methyl tertiary butyl ether) 15% by volume

You may use gasoline containing up to 15% MTBE

by volume.

METHANOL — (methyl or wood alcohol) 5% by volume

You may use gasoline containing up to 5%

methanol by volume as long as it also contains

cosolvents and corrosion inhibitors to protect the

fuel system. Gasoline containing more than 5%

methanol by volume may cause starting and/or

performance problems. It may also damage metal,

rubber, and plastic parts of your fuel system.

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Others manual(s) of Honda Honda Engines GS190

Honda Honda Engines GS190 User Manual - English - 40 pages

Honda Honda Engines GS190 User Manual - German, Dutch - 32 pages

Honda Honda Engines GS190 User Manual - French - 40 pages

Honda Honda Engines GS190 User Manual - Italian - 32 pages

Honda Honda Engines GS190 User Manual - Spanish - 40 pages

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Honda Honda Engines GS190 Manual

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