Hyundai TG1000i Manual page 45

STARTING THE ENGINE
High altitude operation
At high altitude, the standard carburetor air-fuel mixture will be excessively 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 certi-
fied, for extended periods of time, may increase emissions.
High altitude performance can be improved by installing a smaller diameter main fuel jet in the
carburetor. If you always operate the generator at altitudes higher than 5000 feet (1500 m) above
sea level, have your authorized dealer install the high altitude main jet.
Even with suitable carburetor jetting, engine horsepower will decrease approximately 3.5% for
each 1000' (305 m) increase in altitude. The effect of altitude on the horsepower will be greater
than this if
no carburetor modification is made.
CAUTION
When the carburetor has been modified for the high altitude operation, the air-fuel mixture will too
lean for low altitude use. Operation the generator at an altitude below 5000 feet (1500 m) with a
modified carburetor may cause the engine to over heat and result in serious engine damage. For
use at low altitude, have your servicing dealer return the carburetor to original factory specifica-
tion.
Temperature
High temperature unfavorably affects generator operation. Generator performance will decrease
1% for each 10°F (5.5° C) increase in temperature above 85°F (29°C). The normal operating
range of this generator is -20° to 113° F (-29° to 45° C)
WARING
■ Do not operate the generator when the ambient temperature is below -20° F (-29° C)
■ Do not operate the generator when the ambient temperature exceeds 113°F (45° C)
ENGLISH
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