Checking And Charging The Battery - Yamaha YZ450FX 2019 Owner's Service Manual

b. If the digital circuit tester indicates "O.L", re-
place the fuse.
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3. Replace:
• Fuse
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a. Install a new fuse of the correct amperage
rating.
b. Push the start switch to verify if the electrical
circuit is operational.
c. If the fuse immediately blows again, check
the electrical circuit.
Fuses
Main
Spare
Radiator fan motor
EWA13310
WARNING
Never use a fuse with an amperage rating
other than that specified. Improvising or us-
ing a fuse with the wrong amperage rating
may cause extensive damage to the electri-
cal system, cause the lighting and ignition
systems to malfunction and could possibly
cause a fire.
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4. Install:
• Seat
Refer to "GENERAL CHASSIS" on page 4-1.
EAM30291

CHECKING AND CHARGING THE BATTERY

EWA20430
WARNING
To avoid sparking, burns, fire, and explo-
sion:
• Charge battery only with specified charger.
• Use battery only for specified product – no
other use.
• Do not place near fire or immerse in water.
• Do not use battery if it has been dropped,
subject to impact, or visibly damaged.
• Do not disassemble or modify the battery,
or short across its terminals.
ECA26041
NOTICE
To prevent damage to the battery and battery
malfunction:
• Be sure to charge the battery using only the
Amperage
Q'ty
rating
15 A 1
15 A 1
5 A 1
8-59
ELECTRICAL COMPONENTS
specified battery charger. Do not use a
charger designed for lead-acid batteries.
Otherwise, the battery could be damaged,
such as from a long period of excessive
current or voltage exceeding 16 V.
• Avoid excessive current discharge, such
as pressing the starter switch for a long
time. Wait for more than 10 seconds before
attempting to start again. Charge the bat-
tery again as soon as possible. A long state
of discharge below 10 V will damage the
battery.
• Do not use the specified battery charger to
charge a battery other than the lithium-ion
battery. Otherwise, the battery or charger
could be damaged.
• Be careful not to drop the battery or subject
it to strong impacts.
• Avoid charging the battery at high temper-
atures of 65 C (149 F) or more or low tem-
peratures under 0 C (32 F). A control
feature preventing battery charging and
discharging will temporarily intervene. The
battery will discharge at 65 C (149 F) or
more or low temperatures under -10 C (14
F).
• If the battery is charged between 0 C (32
F)and 10 C (50 F), battery charging may
stop halfway without the battery becoming
fully charged even when the specified bat-
tery charger is used. If this occurs, discon-
nect the battery charger, and then resume
charging again.
TIP
This model uses a lithium-ion battery. When
new, the battery is supplied in sleep mode to
minimize current discharging until first-time use.
In the sleep mode, a voltage as low as approxi-
mately 0.1 V can be measured if voltage mea-
surement is performed. As such the battery
cannot be used, but this is not a malfunction. By
activating the battery as follows, the sleep mode
will be canceled and the battery can be used
normally.
Charging (activation) steps
1. Remove:
• Side cover (left/right)
• Seat
Refer to "GENERAL CHASSIS" on page 4-1.
2. Disconnect:
• Battery leads
(from the battery terminals)