Yamaha YFM45FAR Service Manual page 126

CHECKING THE BATTERY
Open-circuit
voltage
12.8 V or higher
G
Check the condition of the battery using the
following charts.
Example:
G
Open-circuit voltage = 12.0 V
G
Charging time = 6.5 hours
G
Charge condition of the battery = 20 ~ 30%
G
Charging method for MF batteries
CAUTION:
If it is impossible to set the standard
G
charging current, be careful not to
overcharge.
When charging the battery, be sure to
G
remove
charging has to be done with the battery
mounted on the motorcycle, be sure to
disconnect the wire at the negative
terminal.)
Never remove the sealing caps of an MF
G
battery.
Make sure that the charging clips are in
G
full contact with the terminal and that they
are not shorted together. (A corroded clip
on the charger may cause the battery to
generate heat in the contact area. A weak
clip spring may cause sparks.)
Before removing the clips from the
G
battery terminals, be sure to turn off the
charger's power switch.
The open-circuit voltage variation for the
G
MF battery, after charging, is shown
below. As shown in the figure, the open-
circuit
minutes
completed. Therefore, wait 30 minutes
after
measuring the open-circuit voltage.
3 - 57
CHK
ADJ
Charging time
No charging is
necessary.
it from the motorcycle.
voltage stabilizes
after charging
charging is completed
(If
about 30
has been
before