Polaris OUTLAW 90 Owner's Manual page 37

Safety
Safety Labels and Locations
Discretionary Warning
WARNING
Never operate this ATV on HILLS steeper than
15 degrees 15°. To prevent overturn on hilly
terrain, use throttle and brakes gradually and shift
weight uphill.
REVERSE operation can be dangerous even at
low speeds. Steering becomes difficult. To
prevent loss of control, avoid sudden braking or
sharp turns.
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