POWX5130 EN
Copyright © 2022 VARO P a g e | 11 www.varo.com
10.8 High altitude operation
At high altitude, the standard carburettor air-fuel mixture will be excessively rich.
Performance will decrease, and fuel consumption will increase.
High altitude performance can be improved by installing a smaller diameter main fuel jet in the
carburettor and readjusting the slow tempo screws. If you always operate the generator at
altitudes higher than 1,500 m (5,000 feet) above sea level, have your dealer perform these
carburettor modifications.
Even with suitable carburettor jetting, engine horsepower will decrease approximately 3.5% for
each 300m (1,000 feet) increase in altitude. The effect of altitude on the horsepower will be
greater than this if no carburettor modification is made.
Operation of the generator at an altitude lower than the carburetor is jetted
for may result in reduced performance, overheating, and serious engine
damage caused by an excessively lean air/fuel mixture.
11 MAINTENANCE/CLEANING
11.1 The importance of maintenance.
Good maintenance is essential for safe, economical and trouble-free operation. It will also help
reduce air pollution.
NOTE: Before cleaning or maintenance of the generator, you must switch off the motor and
allow the equipment to cool down!
CLEANING: For cleaning the housing, please use only a lint-free cloth dampened with a solution
of soapy water (solution of washing-up liquid). During cleaning, no water should penetrate the
inside of the generator.
11.2 Maintenance chart
Regular maintenance is most important for the best performance and safe operation.
