2009-2010 Polaris RZR Factory Service Manual, Page 44Get this manual
MAINTENANCE Battery Off Season Storage
Whenever the vehicle is not used for 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 cool, dry placeCheck battery voltage each month during storage and recharge as needed to maintain full chargeNOTE: Battery charge can be maintained by using Polaris battery tender charger or by charging about once month to make up for normal self-dischargeBattery tenders can be left connected during the storage period, and will automatically charge the battery if the voltage drops below pre-determined point
Spark Plug Service
12Remove both driver and passenger seatsRemove the rear service panel
WARNING