Yamaha YFM80WP Owner's Manual page 187

Know the terrain where you ride.
Ride cautiously in unfamiliar areas. Stay alert for
holes, rocks, or roots in the terrain, and other
hidden hazards which may cause the machine
to upset.
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Go slowly and be extra careful when operat-
ing this ATV on unfamiliar terrain. Always be
alert to changing terrain conditions when
operating the ATV.
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Do not operate on excessively rough, slip-
pery or loose terrain until you have learned
and practiced the skills necessary to control
the ATV on such terrain. Failure to use extra
care when operating on excessively rough,
slippery or loose terrain could cause loss of
traction or vehicle control, which could
result in an accident, including an overturn.
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