Yamaha Motor Co., Ltd. YFM7FGPW — ELECTRICAL SYSTEM

NOTE: _ Since MF batteries are sealed, it is not possi- ble to check the charge state of the battery by measuring the specific gravity of the electro- lyte. Therefore, the charge of the battery has to be checked by measuring the voltage at the battery terminals. 1. Remove: battery cover Refer to “SEAT AND SIDE PANELS”. front carrier battery holding bracket Refer to “FRONT CARRIER AND FRONT GUARD”. 2. Disconnect: battery leads (from the battery terminals) 1 CAUTION: 2 _ First, disconnect the negative battery lead 1 , and then the positive battery lead 2 . 3. Remove: battery 4. Check: battery charge MMM M M MMM M M MMM M M MMM M M MMM M M MMM M MMM a.

Connect a pocket tester to the battery termi- nals. Positive tester probe positive battery terminal Negative tester probe negative battery terminal NOTE: _ The charge state of an MF battery can be checked by measuring its open-circuit volt- age (i.e., the voltage when the positive termi- nal is disconnected). No charging is necessary when the open-cir- cuit voltage equals or exceeds 12.8 V. 3 - 74 CHECKING AND CHARGING THE BATTERY CHK ADJ