Polaris Sportsman 400 H.O. Owner's Manual page 66

OPERATION
Driving Safely
Parking on an Incline
Avoid parking on an incline if possible. If it's unavoidable, follow these
precautions:
1. Stop the engine.
2. Place the transmission in gear.
3. Lock the parking brake.
4. Always block the rear wheels on the downhill side.
5. Turn the fuel valve off.
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