Yamaha GRIZZLY 80 YFM80GT Owner's Manual page 178

During operation
Always keep your feet on the footboards during
operation. Otherwise your feet may contact the
rear wheels.
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Always keep both hands on the handlebars
and both feet on the footboards of your ATV
during operation. Removing even one hand
or foot can reduce your ability to control the
ATV or could cause you to lose your balance
and fall off of the ATV. If you remove a foot
from a footboard, your foot or leg may come
into contact with the rear wheels, which
could injure you or cause an accident.
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