Yamaha RAPTOR YFM660RP Owner's Manual page 164

8. Remove the battery and charge it. Store
it in a dry place and recharge it once a
month. Do not store the battery in an ex-
cessively warm or cold place (less than
0°C (30°F) or more than 30°C (90°F)).
NOTE:
Make any necessary repairs before storing
the machine.
9-4