2014 YAMAHA AEROX50 key battery

PERIODIC MAINTENANCE AND ADJUSTMENT
6-7
6
EAUM3251
Checking the spark plugThe spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic main-
tenance and lubrication chart. In addi-
tion, the condition of the spark plug
can reveal the condition of the engine.
To remove the spark plug
1. Remove panel A. (See page 6-6.)
2. Remove the battery. NOTICE:
When removing the battery, be
sure the key is turned to “ ”,
then disconnect the negative
lead before disconnecting the
positive lead.
[ECA17711]
3. Remove the partition between the
battery and the spark plug by re-
moving the screws.4. Remove the spark plug cap.
5. Remove the spark plug as shown,
with a spark plug wrench available
at a Yamaha dealer.To check the spark plug
1. Check that the porcelain insulator
around the center electrode of the
spark plug is a medium-to-light
tan (the ideal color when the vehi-
cle is ridden normally).
TIPIf the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer check
the vehicle.
1. Battery
2. Screw
3. Partition
4. Spark plug cap
1. Spark plug capZAUM1080
3 142
1. Spark plug wrench
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
6 2. Check the spark plug for electrode
erosion and excessive carbon or
other deposits, and replace it if
necessary.
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifi-
cation.2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
TIPIf a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is 1/4…
1/2 turn past finger tight. However, the
spark plug should be tightened to the
specified torque as soon as possible.4. Install the spark plug cap.
5. Place the partition in the original
position and install the screws.
6. Install the battery. NOTICE: When
installing the battery, be sure
the key is turned to “ ”, then
connect the positive lead before
connecting the negative lead.
[ECA17721]
7. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals
and that the breather hose is
properly routed, in good condi-
tion, and not obstructed. NOTICE:
If the breather hose is posi-
tioned in such a way that the
frame is exposed to electrolyte
or gas expelled from the bat-
tery, the frame could suffer
structural and external damag-
es.
[ECA10602]
8. Install the panel.
Specified spark plug:
NGK/CR7E1. Spark plug gapSpark plug gap:
0.7–0.8 mm (0.028–0.031 in)
1
ZAUM0037
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.04 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6
TIPMake sure that the scooter is posi-
tioned straight up when checking the
electrolyte level.2. Remove panel A. (See page 6-6.)
3. Check the electrolyte level in the
battery.TIPThe electrolyte should be between the
minimum and maximum level marks.4. If the electrolyte is at or below the
minimum level mark, add distilled
water to raise it to the maximum
level mark. NOTICE: Use onlydistilled water, as tap water
contains minerals that are
harmful to the battery.
[ECA10612]
WARNING
EWA10761
Electrolyte is poisonous and
dangerous since it contains sul-
furic acid, which causes severe
burns. Avoid any contact with
skin, eyes or clothing and al-
ways shield your eyes when
working near batteries. In case
of contact, administer the fol-
lowing FIRST AID.
EXTERNAL: Flush with plenty
of water.
INTERNAL: Drink large quan-
tities of water or milk and im-
mediately call a physician.
EYES: Flush with water for 15
minutes and seek prompt
medical attention.
Batteries produce explosive hy-
drogen gas. Therefore, keep
sparks, flames, cigarettes, etc.,
away from the battery and pro-
vide sufficient ventilation when
charging it in an enclosed
space.KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
5. Check and, if necessary, tighten
the battery lead connections and
correct the breather hose routing.
To store the battery
1. If the scooter will not be used for
more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
NOTICE: When removing the
battery, be sure the key is
turned to “ ”, then disconnect
the negative lead before discon-
necting the positive lead.
[ECA17711]
2. If the battery will be stored for
more than two months, check the
specific gravity of the electrolyte
at least once a month and fully
charge the battery whenever nec-
essary.
3. Fully charge the battery before in-
stallation. NOTICE: When install-
ing the battery, be sure the key
1. Maximum level mark
2. Minimum level mark1
2
+
UPPER
LOWER
ZAUM0106
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-25
6is turned to “ ”, then connect
the positive lead before con-
necting the negative lead.
[ECA17721]
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals
and that the breather hose is
properly routed, in good condi-
tion, and not obstructed. NOTICE:
If the breather hose is posi-
tioned in such a way that the
frame is exposed to electrolyte
or gas expelled from the bat-
tery, the frame could suffer
structural and external damag-
es.
[ECA10602]
NOTICE
ECAM1120
Always keep the battery
charged. Storing a discharged
battery can cause permanent
battery damage.
After installing the battery, be
sure to turn the main switch
from “ ” to “ ” three times in
3 seconds intervals to initialize
the idle speed control system.
EAUM3270
Replacing the fuseThe fuse holder is located beside the
battery. Remove panel A to access the
fuse. (See page 6-6.)
If the fuse is blown, replace it as fol-
lows.
1. Turn the key to “ ” and turn off all
electrical circuits.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15132]
NOTICE:After removing and installing
the main fuse, be sure to turn
the main switch from “ ”
to “ ” three times in 3 seconds
intervals to initialize the idle
speed control system.
[ECAM1130]
3. Turn the key to “ ” and turn on
the electrical circuits to check if
the devices operate.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
1. Fuse
2. BatteryZAUM1079
12
Specified fuse:
15.0 A
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