Checking The Fuses; Checking And Charging The Battery - Yamaha YZ450FP 2023 Owner's Service Manual

EAM30290

CHECKING THE FUSES

The following procedure applies to all of the fus-
es.
1. Remove:
• Seat
• Side cover (left)
Refer to "GENERAL CHASSIS" on page 4-1.
2. Check:
• Fuse "1"
a. Connect the digital circuit tester to the fuse
and check the continuity.
TIP
Set the digital circuit tester selector to "  ".
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
b. If the digital circuit tester indicates "O.L",
replace the fuse.
3. Replace:
• Fuse
a. Install a new fuse of the correct amperage
rating.
b. Push the start switch to verify if the electri-
cal circuit is operational.
c. If the fuse immediately blows again, check
the electrical circuit.
Fuses
Main
Spare
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
1
Amperage
Q'ty
rating
15 A 1
15 A 1
8-47
ELECTRICAL COMPONENTS
systems to malfunction and could possibly
cause a fire.
4. Install:
• Seat
• Side cover (left)
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.
ECA28440
NOTICE
To prevent damage to the battery and battery
malfunction:
• Be sure to charge the battery using only the
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 start switch for a long time.
Wait for more than 10 seconds before at-
tempting to start again. Charge the battery
again as soon as possible. A long state of
discharge below 10 V will damage the bat-
tery.
• 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