also foul the spark plug and make it difficult to start the engine. 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 generator at altitudes above 5,000 feet (1,500 meters), have your 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 may 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 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.
MAINTENANCE
Good maintenance is essential for safe, economical and trouble-free operation. It will also help
reduce air pollution.
Improper maintenance or failure to correct a problem before operation can
cause a malfunction in which you can be seriously injured or killed. Always
follow the inspection and maintenance recommendations and schedules in
this instruction manual.
Maintenance Safety
Make sure the engine is off before you begin any maintenance or repairs.
Let the engine and exhaust system cool before touching.
To reduce the possibility of fire or explosion, be careful when working around gasoline. Use
only a nonflammable solvent, not gasoline, to clean parts. Keep cigarettes, sparks and flames
away from all fuel-related parts.
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Summary of Contents for TPP-4500DF-A
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