Polaris OUTLAW 90 Owner's Manual page 156

Battery
Battery Storage
Whenever the vehicle is not used for a period of three months or more, remove the battery
from the vehicle, ensure that it's fully charged, and store it out of the sun in a cool, dry place.
Check battery voltage each month during storage and recharge as needed to maintain a full
charge.
Cleaning
Keeping your ATV clean will not only improve its appearance but it can also extend the life
of various components.
NOTICE: High water pressure may damage components. POLARIS recommends washing the vehicle
by hand or with a garden hose, using mild soap.
Certain products, including insect repellents and chemicals, will damage plastic surfaces.
Do not allow these types of products to contact the vehicle.
Maintenance
153