Yamaha XT250X - Page 263

ELECTRICAL COMPONENTS
7-38
OUT OF REACH OF CHILDREN.
●
Avoid bodily contact with electrolyte as it
can cause severe burns or permanent eye
injury.
FIRST AID IN CASE OF BODILY CONTACT:
EXTERNAL
● Skin — Wash with water.
●
Eyes — Flush with water for 15 minutes and
get immediate medical attention.
INTERNAL
● Drink large quantities of water or milk fol-
lowed with milk of magnesia, beaten egg or
vegetable oil. Get immediate medical atten-
tion.
CAUTION:
ECA13660
● This is a sealed battery. Never remove the
sealing caps because the balance between
cells will not be maintained and battery per-
formance will deteriorate.
● Charging time, charging amperage and
charging voltage for an MF battery are dif-
ferent from those of conventional batteries.
The MF battery should be charged as ex-
plained in the charging method illustra-
tions. If the battery is overcharged, the
electrolyte level will drop considerably.
Therefore, take special care when charging
the battery.
NOTE:
Since MF batteries are sealed, it is not possible
to check the charge state of the battery by mea-
suring the specific gravity of the electrolyte.
Therefore, the charge of the battery has to be
checked by measuring the voltage at the battery
terminals.
1. Remove:
● Seat
●
Rear right side cover
Refer to “GENERAL CHASSIS” on page 4-1.
2. Disconnect:
● Battery band “1”
Battery leads
(from the battery terminals)
CAUTION:
EC3C51008
Always disconnect negative battery lead “2”
first, and then disconnect positive battery
lead “3”.
3. Remove:
●
Battery
4. Check:
● Battery charge
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Connect a pocket tester to the battery termi-
nals.
NOTE:
● The charge state of an MF battery can be
checked by measuring its open-circuit voltage
(i.e., the voltage when the positive battery ter-
minal is disconnected).
● No charging is necessary when the open-cir-
cuit voltage equals or exceeds 12.8 V.
b. Check the charge of the battery, as shown in
the charts and the following example.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
5. Charge:
● Battery
(refer to the appropriate charging method il-
lustration)
WARNING
EWA13300
Do not quick charge a battery.
CAUTION:
EC3C51007
● Never remove the MF battery sealing caps.
● Do not use a high-rate battery charger.
They force a high-amperage current into
Positive tester probe →
Positive battery terminal
Negative tester probe →
Negative battery terminal
Example
Open-circuit voltage = 12.0 V
Charging time = 6.5 hours
Charge of the battery = 20–30%
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1
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