Yamaha YJ50RAP Service Manual page 75

CHECKING AND CHARGING THE BATTERY
1
1
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:
• center cover
Refer to "SIDE COVERS AND FOOTREST
BOARD".
• battery box
Refer to "ENGINE REMOVAL" in chapter 5.
2. Disconnect:
• battery lead coupler 1
(from the battery terminals)
NOTE:
Push down on the tab a, and then remove the
battery lead coupler.
3. Remove:
• battery
4. Measure:
• battery charge
a. Connect a battery tester 1 to the battery
terminals.
Tester positive probe →
Tester negative probe →
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 - 28
CHK
ADJ
battery positive terminal
battery negative terminal