6. As the engine warms up, gradually open the choke.
(1) CHOKE LEVER
(2) OPEN
High altitude operation
At high altitude, the standard carburetor air–fuel mixture will be
excessively rich. Performance and fuel consumption will increase.
High altitude performance can be improved by installing a smaller
diameter main fuel jet in the carburetor and readjusting the pilot screw.
If you always operate the tiller at altitude higher than 1,830m (6,000
feet) above sea level ask your authorized dealer to perform these
carburetor modifications.
Even with suitable carburetor jetting, engine horsepower will decrease
approximately 3‐5% for each 305m(1,000 feet) increase in altitude.
The affect of altitude on the horsepower will be greater than this if no
carburetor modification is made.
CAUTION: Operation of the tiller 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.
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