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 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 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
The Importance of 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.
Maintenance Schedule
Remember that 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.
10
Summary of Contents for PG3500
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