Honda HS621 Owner's Manual page 19

3.Start the snowthrowing operation only after the engine has warmed up
and is running smoothly.
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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.
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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.
NOTE:
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For most efficient snowthrowing, clear snow before it melts and
refreezes.
9 When you are operating the snowthrower over bumpy ground, push
down on the handle to raise the snowthrowing mechanism above ground
level.
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