Yamaha WR450F, Owner'S Service Manual

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INSP
ADJ
BATTERY INSPECTION AND CHARGING
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:
• Seat
2. Disconnect:
• Battery leads
(from the battery terminals)
CAUTION:
First, disconnect the negative battery lead
1
, and then the positive battery lead
2
.
3. Remove:
• Battery band
• Battery
4. Measure:
• Battery charge
Measurement steps:
• Connect a pocket tester
1
to the battery
terminals.
Tester positive probe
→
battery positive terminal
Tester negative probe
→
battery negative 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 ter-
minal is disconnected).
• No charging is necessary when the open-
circuit voltage equals or exceeds 12.8 V.