2003 YAMAHA AEROX50 maintenance

PERIODIC MAINTENANCE AND MINOR REPAIR
6
1
ZAUM0282
1. Fuse
EAU01307
Replacing the fuse
The fuse holder is located behind pa-
nel A. (See page 6-5 for panel removal
and installation procedures.)
If the fuse is blown, replace it as follows.
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.
Specified fuse: 7.5 A
EC000103
Do not use a fuse of a higher
amperage rating than recommended
to avoid causing extensive damage
to the electrical system and possibly
a fire.
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.
CAUTION:
EAUM0072*
Replacing a headlight bulb
1. Remove cowling A
(See page 6-5 for cowling removal
and installation procedures.)
2. Remove the headlight coupler.
3. Remove the headlight bulb holder by
turning it 1/4 turn counterclockwise.
4. Remove the defective bulb.
EW000119
Headlight bulbs get very hot.
Therefore, keep flammable products
away from a lit headlight bulb, and
do not touch the bulb until it has
cooled down.
1
ZAUM0283
1. Headlight bulb
WARNING
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PERIODIC MAINTENANCE AND MINOR REPAIR
65. Place a new headlight bulb into
position, and then secure it with
the bulb holder.
6. Connect the headlight coupler
and install the cowling A.
EC000105
Do not touch the glass part of the
headlight bulb to keep it free from
oil, otherwise the transparency of
the glass, the luminosity of the bulb,
and the bulb life will be adversely
affected. Thoroughly clean off any
dirt and fingerprints on the headlight
bulb using a cloth moistened with
alcohol or thinner.
CAUTION:
ZAUM0284
6-21
EAUM0037
Replacing the brake/taillight
bulb
1. Remove the brake/taillight lens by
removing the screws.
2. Remove the brake/taillight bulb
holder by turning it 1/4 turn
counter-clockwise.
3. Remove the defective bulb.
4. Place a new bulb into position, and
then secure it with the bulb holder.
5. Place the brake/taillight lens in the
original position, and then install
the screw.

PERIODIC MAINTENANCE AND MINOR REPAIR
6
ZAUM0285ZAUM0286
EAU03218
Replacing a turn signal light
bulb
1. Remove the turn signal lens by
removing the screws.
2. Remove the defective bulb by
pushing it in and turning it
counterclockwise.
3. Insert a new bulb into the socket,
push it in, and then turn it
clockwise until it stops.
4. Install the lens by installing the
screws.
EC000108
Do not overtighten the screws,
otherwise the lens may break.
CAUTION:
EAU03087
Troubleshooting
Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems
yourself. However, should your scooter
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter
properly.
Use only genuine Yamaha replacement
parts. Imitation parts may look like
Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03363
Troubleshooting charts
Starting problems or poor engine performance
EW000125
Keep away open flames and do not smoke while checking or working on the fuel system.
WARNING
Check the fuel level in
the fuel tank.
1. FuelThere is enough fuel.
There is no fuel.Check the compression.
Supply fuel.
Operate the electric starter.
2. CompressionThere is compression.
There is no compression.Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.
3. IgnitionWet
DryWipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.The engine does not start.
Check the battery.Open the throttle halfway and operate
the electric starter.
Operate the electric starter.
4. BatteryThe engine turns over
quickly.
The engine turns over
slowly.The battery is good.
Check the electrolyte and battery
lead connections, and charge the
battery if necessary.The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the compressoin.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6 Engine overheating
EW000070
•Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
•After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissing
sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
NOTE :
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended
coolant as soon as possible.
WARNING
Wait until the
engine has cooled.Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.
The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.
Add coolant. (See NOTE.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
6-24