Yamaha YFM660R Owner's Manual page 158

4. Check behind you for people or obstacles,
and then release the brake pedal.
5. Open the throttle lever gradually, and at the
same time, release the clutch lever slowly,
and continue to watch to the rear while back-
ing.
WARNING
_
Improper operation in reverse could make you
hit an obstacle or person behind you, resulting
in serious injury. When you shift into reverse,
make sure there are no obstacles or people be-
hind you. When it is safe to proceed, go slowly.
_
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