Yamaha MT-03 Service Manual page 378

• Standard charging current is reached
Battery is good.
• Standard charging current is not reached
Replace the battery.
d. Adjust the voltage so that the current is at
the standard charging level.
e. Set the time according to the charging time
suitable for the open-circuit voltage.
Refer to "Battery condition checking steps".
f. If charging requires more than 5 hours, it is
advisable to check the charging current after
a lapse of 5 hours. If there is any change in
the amperage, readjust the voltage to obtain
the standard charging current.
g. Measure the battery open-circuit voltage af-
ter leaving the battery unused for more than
30 minutes.
12.8 V or more --- Charging is complete.
12.7 V or less --- Recharging is required.
Under 12.0 V --- Replace the battery.
Charging method using a constant volt-
age charger
a. Measure the open-circuit voltage prior to
charging.
NOTE:
Voltage should be measured 30 minutes after
the engine is stopped.
b. Connect a charger and ammeter to the bat-
tery and start charging.
c. Make sure that the current is higher than the
standard charging current written on the bat-
tery.
NOTE:
If the current is lower than the standard charg-
ing current written on the battery, this type of
battery charger cannot charge the MF battery.
A variable voltage charger is recommended.
d. Charge the battery until the battery's charg-
ing voltage is 15 V.
NOTE:
Set the charging time at 20 hours (maximum).
e. Measure the battery open-circuit voltage af-
ter leaving the battery unused for more than
30 minutes.
ELECTRICAL COMPONENTS
12.8 V or more --- Charging is complete.
12.7 V or less --- Recharging is required.
Under 12.0 V --- Replace the battery.
6. Install:
• Battery
• Battery band
7. Connect:
• Battery leads
(to the battery terminals)
ECA13630
CAUTION:
First, connect the positive battery lead "1",
and then the negative battery lead "2".
1
8. Check:
• Battery terminals
• Dirt Clean with a wire brush.
Loose connection
9. Lubricate:
• Battery terminals
Recommended lubricant
Dielectric grease
10. Install:
• Battery cover
• Fuel tank
Refer to "FUEL INJECTION SYSTEM" on
page 7-1.
• Seats
EAS28040
CHECKING THE RELAYS
Check each switch for continuity with the pock-
et tester. If the continuity reading is incorrect,
replace the relay.
8-51
2
Connect properly.