Yamaha YZ 2019 Series Owner's Service Manual page 356

Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
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. Turn the engine off.
b. Install a new fuse of the correct amperage
rating.
c. Start the engine to verify if the electrical circuit
is operational.
d. 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
• Side cover (left/right)
Refer to "GENERAL CHASSIS" on page 4-1.
EAM30291
CHECKING AND CHARGING THE BATTERY
EWA13290
WARNING
Batteries generate explosive hydrogen gas
and contain electrolyte which is made of poi-
sonous and highly caustic sulfuric acid.
Therefore, always follow these preventive
measures:
• Wear protective eye gear when handling or
working near batteries.
Amperage
Q'ty
rating
15 A 1
15 A 1
5 A 1
8-57
ELECTRICAL COMPONENTS
• Charge batteries in a well-ventilated area.
• Keep batteries away from fire, sparks or
open flames (e.g., welding equipment,
lighted cigarettes).
• DO NOT SMOKE when charging or han-
dling batteries.
• KEEP BATTERIES AND ELECTROLYTE
OUT OF REACH OF CHILDREN.
• Avoid bodily contact with electrolyte as it
can cause severe burns or permanent eye
injury.
FIRST AID IN CASE OF BODILY CONTACT:
EXTERNAL
• Skin — Wash with water.
• Eyes — Flush with water for 15 minutes and
get immediate medical attention.
INTERNAL
• Drink large quantities of water or milk fol-
lowed with milk of magnesia, beaten egg or
vegetable oil. Get immediate medical atten-
tion.
ECA13661
NOTICE
• This is a VRLA (Valve Regulated Lead Acid)
battery. Never remove the sealing caps be-
cause the balance between cells will not be
maintained and battery performance will
deteriorate.
• Charging time, charging amperage and
charging voltage for a VRLA (Valve Regu-
lated Lead Acid) battery are different from
those of conventional batteries. The VRLA
(Valve Regulated Lead Acid) battery should
be charged according to the appropriate
charging method. If the battery is over-
charged, the electrolyte level will drop con-
siderably. Therefore, take special care
when charging the battery.
TIP
Since VRLA (Valve Regulated Lead Acid) bat-
teries are sealed, it is not possible to check the
charge state of the battery by measuring the
specific gravity of the electrolyte. Therefore, the
charge of the battery has to be checked by mea-
suring the voltage at the battery terminals.
1. Remove:
• Side cover (left/right)
• Seat
Refer to "GENERAL CHASSIS" on page 4-1.
2. Disconnect:
• Battery leads
(from the battery terminals)