2004 YAMAHA AEROX50 clock

3
INSTRUMENT AND CONTROL FUNCTIONS
EAU03882
Front brake lever
The front brake lever is located on the
right handlebar grip. To apply the front
brake, pull this lever toward the
handlebar grip.
EAU00163
Rear brake lever
The rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the
handlebar grip.
1. Front brake lever 1. Rear brake lever
1
ZAUM0084
1
ZAUM0085
EAU02935*
Fuel tank cap
To open the fuel tank cap
Open the fuel tank cap lock cover, insert
the key into the lock, and then turn it 1/4
turn counterclockwise. The lock will be
released and the fuel tank cap can be
opened.
1
ZAUM0262
3-51. Fuel tank cap

INSTRUMENT AND CONTROL FUNCTIONS
3 To close the fuel tank cap
1. Push the fuel tank cap into posi-
tion with the key inserted in the
lock.
2. Turn the key clockwise to the ori-
ginal position, remove it, and then
close the lock cover.
NOTE :
The fuel tank cap cannot be closed
unless the key is in the lock. In addi-
tion, the key cannot be removed if the
cap is not properly closed and locked.
EWA00025
Make sure that the fuel tank cap is
properly closed before riding.
WARNING
EAU03753
Fuel
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
bottom of the filler tube as shown.
EW000130
•Do not overfill the fuel tank,
otherwise it may overflow when
the fuel warms up and expands.
•Avoid spilling fuel on the hot
engine.
WARNING
1
2
ZAUM0020
1. Filler tube
2. Fuel level
EAU00185
EC000008
Immediately wipe off spilled fuel with
a clean, dry, soft cloth, since fuel may
deteriorate painted surfaces or plas-
tic parts.
CAUTION:
EAU04206
Recommended fuel:
REGULAR UNLEADED
GASOLINE ONLY
Fuel tank capacity:
Total amount:
7 L
Your Yamaha engine has been
designed to use regular unleaded
gasoline with a research octane
number of 91 or higher. If knocking (or
pinging) occurs, use a gasoline of a
different brand or premium unleaded
fuel. Use of unleaded fuel will extend
spark plug life and reduce maintenance
costs.
3-6

3
INSTRUMENT AND CONTROL FUNCTIONS
EAU03091
Rider seat
To open the rider seat
1. Place the scooter on the
centerstand.
2. Insert the key into the main switch,
and then turn it counterclockwise.
NOTE :
Do not push inward when turning the
key.
3. Fold the rider seat up.To close the rider seat
1. Fold the rider seat down, and then
push it down to lock it in place.
2. Remove the key from the main
switch if the scooter will be left
unattended.
NOTE :
Make sure that the seat is properly
secured before riding.
1
ZAUM0264
1. Seat
3-9
EAU03839
Starter (choke) lever ""
Starting a cold engine requires a richer
air-fuel mixture, which is supplied by the
starter (choke).
•Move the lever in direction a to
turn on the starter (choke).
•Move the lever in direction b to
turn off the starter (choke).
1. Starter (choke) lever ""
a
b
1
ZAUM0293

3
INSTRUMENT AND CONTROL FUNCTIONS
a
1
ZAUM0266
1. Storage compartment lock
a Open
3-11
ba
12
ZAUM0294
EAU00295
Adjusting the shock absor-
ber assembly
(depends on model)
This shock absorber assembly is
equipped with a spring preload
adjusting ring.
EC000015
Never attempt to turn an adjusting
mechanism beyond the maximum or
minimum settings.Adjust the spring preload as follows.
•To increase the spring preload and
thereby harden the suspension,
turn the adjusting ring in direction
a .
•To decrease the spring preload
and thereby soften the suspen-
sion, turn the adjusting ring in di-
rection b .
NOTE :
Align the appropriate notch in the
adjusting ring with the position indicator
on the shock absorber.
CAUTION:
Setting
Minimum (soft)
b
Standardmiddle
Maximum (hard)a
1. Spring preload adjusting ring
2. Position indicator
EAUM0083
Storage compartment B
The storage compartment is located in
front of the seat.
To open the storage compartment
1. Insert the key into the lock, and
then turn it clockwise.
2. Fold the storage compartment
cover up.
To close the storage compartment
1. Fold the storage compartment
cover down.
2. Turn the key counterclockwise,
and then remove it.

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
6-20

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.
6-22

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