2007-2008 Yamaha YFM700 Grizzly Factory Service Manual, Page 149Get this manual
CHECKING AND CHARGING THE BATTERY CHK ADJ
NOTE: Since MF batteries are sealed, it is not possible to check the charge state of the battery by measuring the specific gravity of the electrolyteTherefore, the charge of the battery has to be checked by measuring the voltage at the battery terminals1Remove: battery cover Refer to "SEAT AND SIDE PANELS" front carrier battery holding bracket Refer to "FRONT CARRIER AND FRONT GUARD"
2Disconnect: battery leads (from the battery terminals)