High Altitude Operation - Honda HS828 Owner's Manual

l
Adjust the snow discharge chute to avoid hitting the operator,
bystanders, windows, and other objects with thrown snow. Stay clear
of the snow discharge chute while the engine is running.
l
If the snow discharge chute becomes clogged, stop the engine and use
a wooden stick to unclog it.
Never put your hand into the snow discharge chute while the engine is
running; serious personal injury could result.
l
To move from one place to another, or to change direction, use the
drive clutch lever. Using the auger clutch lever will cause the
snowblowing mechanism to rotate, possibly resulting in equipment
damage or personal injury.
HIGH ALTITUDE OPERATION
At high altitude, the standard carburetor air-fuel mixture will be too rich.
Performance will decrease, and fuel consumption will increase. A very rich
mixture may also foul the spark plug and cause hard starting.
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 snowblower at altitudes higher than 6,000 feet above
sea level, have an authorized Honda Snowblower dealer perform this car-
buretor modifications.
Even with carburetor modification, engine horsepower will decrease about
3.5% for each 1,000 foot increase in altitude. The effect of altitude on
horsepower will be greater than this if no carburetor modification is made.
A reduction in engine horsepower will reduce snow clearing performance.
When the carburetor is modified for good high altitude operation, the
air/fuel mixture will be too lean at low altitude. Performance will decrease,
and the engine will overheat.
To avoid an excessively lean air/fuel mixture and engine damage, reinstall
the standard main fuel jet and readjust the pilot screw for operation at
altitudes lower than 6,000 feet above sea level.
30