Honda HSM1590i Manuel De L'utilisateur page 61

Clearing snow
For efficient operation, it is important to select an adequate engine
speed for the required snow discharge distance and clear the snow
without lowering the engine speed. If the engine speed keeps
dropping by setting the main shift lever in the LOW position, clear the
snow as follows.
Clearing in narrow width
Clear the snow with the main shift lever in LOW and in narrow width
by using a part of the snow blowing mechanism when the snow is
deep or hard.
Clearing with back and forth motions
If the snow is so hard that the snowblower tends to ride over the sur-
face, push it back and forth to remove snow gradually.
When the mode selector switch is in AUTO or POWER, the auger
housing automatically rises while going in reverse.
In case the auger clutch switch is in the ON position, the auger is
automatically returned to the original position when the snowblower
is transporting forward again.
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