Yamaha YZ450FX 2019 Owner's Service Manual page 355

ECA13640
NOTICE
First, disconnect the negative battery lead
"1", and then positive battery lead "2".
3. Remove:
• Battery
4. Connect the battery charger (special tool) to
the battery.
Lithium battery charger
90890-05376
Lithium battery charger
DBY-ACC51-70-02
TIP
• For instructions on charging and handling the
battery charger, refer to the battery charger's
instruction manual.
• Once battery charging starts, the sleep mode
is canceled.
5. Charge the battery until it is fully charged.
6. Install:
• Battery terminals
7. Connect:
• Battery leads
(to the battery terminals)
ECA13630
NOTICE
First, connect the positive battery lead "1",
and then the negative battery lead "2".
8. Check:
• Battery terminals
2 2 2
1 1
1 1
2 2 2
8-60
ELECTRICAL COMPONENTS
Dirt  Clean with a wire brush.
Loose connection  Connect properly.
9. Lubricate:
• Battery terminals
Recommended lubricant
Dielectric grease
10.Install:
• Seat
• Side cover (left/right)
Refer to "GENERAL CHASSIS" on page 4-1.
Checking the battery
ECA26080
NOTICE
The battery has a limited service life. If the
battery cannot be charged or it is determined
that the battery cannot be used after check-
ing the battery, it should be replaced. When
replacing the battery, be sure to use a
Yamaha genuine lithium-ion battery.
TIP
Do not check the battery at high temperature of
65 C (149 F) or more or low temperatures be-
low 10 C (50 F). Otherwise, the control feature
preventing battery charging and discharging will
temporarily intervene.
1. Check:
• Battery
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. If the battery is hot, wait until the battery has
cooled down to the ambient temperature.
b. Measure the voltage between the battery ter-
minals.
13.25 V or more  The battery is normal.
Checking is finished.
Less than 13.25 V  Go to step (c).
c. Connect the battery charger (special tool) to
the battery and charge it.
Lithium battery charger
90890-05376
Lithium battery charger
DBY-ACC51-70-02
TIP
For instructions on charging and handling the
battery charger, refer to the battery charger's in-
struction manual.
d. If the battery is hot, wait until the battery has
cooled down to the ambient temperature.
e. Measure the voltage between the terminals
of the battery.