2003 YAMAHA AEROX50 Owners Manual

3
INSTRUMENT AND CONTROL FUNCTIONS
EAU03098
Catalytic converter
This scooter is equipped with a catalytic
converter in the muffler.
EW000128
The exhaust system is hot after
operation. Make sure that the
exhaust system has cooled down
before doing any maintenance work.
EC000114
The following precautions must be
observed to prevent a fire hazard or
other damages.
•Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
•Never park the scooter near
possible fire hazards such as
grass or other materials that
easily burn.
•Do not allow the engine to idle
too long.
WARNING
CAUTION:
3-7
ZAUM0289M
EAUS0015
Kickstarter
To start the engine, push the kickstarter
down lightly with your foot until the
gears engage, and then push it down
smoothly but forcefully.

INSTRUMENT AND CONTROL FUNCTIONS
3ZAUM0204
1
2
ZAUM0263
1. Storage compartment B
2. Oil tank cap
3-8
EAU03750
2-stroke engine oil
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. Add the
recommended 2-stroke engine oil if
necessary.
NOTE :
Make sure that the 2-stroke engine oil
tank cap is properly installed.
Recommended oil:
Yamalube 2
or equivalent 2-stroke engine oil
(JASO grade "FC", or ISO
grades "EG-C" or "EG-D")
Oil quantity:
1.3 L
EAUM0082
2-stroke engine oil tank cap
The 2-stroke engine oil tank cap is
located in the storage compartment.
(See page 3-11 for storage
compartment opening and closing
procedures.)
1. To remove the 2-stroke engine oil
tank cap, pull it off.2. To install the 2-stroke engine oil
tank cap, push it into the oil tank
opening.
NOTE :
Make sure that the 2-stroke engine oil
tank cap is properly installed before
riding the scooter.

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

INSTRUMENT AND CONTROL FUNCTIONS
3
1
ZAUM0265
1. Storage compartment A
EAU03450
Storage compartment A
There is a storage compartment under
the seat. (See page 3-9 for seat opening
and closing procedures.)
EWA00005
•Do not exceed the load limit of 3.0
kg for the storage compartment.
•Do not exceed the maximum
load of 180 kg for the vehicle.
(Load is the totalweight of rider,
passenger, cargo and acces-
sories.)
EC000010
Keep the following points in mind
when using the storage compartment.
•Since the storage compartment
accumulates heat when
exposed to the sun, do not store
anything susceptible to heat
inside it.
•To avoid humidity from
spreading through the storage
compartment, wrap wet articles
in a plastic bag before storing
them in the compartment.
•Since the storage compartment
may get wet while the scooter
is being washed, wrap any arti-
cles stored in the compartment
in a plastic bag.
•Do not keep anything valuable
or breakable in the storage
compartment.To store a helmet in the storage
compartment, place the helmet upside-
down with the front facing forward.
NOTE :
•Some helmets cannot be stored
in the storage compartment
because of their size or shape.
•Do not leave your scooter
unattended with the seat open.
CAUTION:
WARNING
3-10

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.

INSTRUMENT AND CONTROL FUNCTIONS
3
EAU00315
EW000041
This shock absorber contains highly
pressurized nitrogen gas. For proper
handling, read and understand the
following information before
handling the shock absorber. The
manufacturer cannot be held
responsible for property damage or
personal injury that may result from
improper handling.
•Do not tamper with or attempt
to open the gas cylinder.
•Do not subject the shock absor-
ber to an open flame or other
high heat sources, otherwise it
may explode due to excessive
gas pressure.
•Do not deform or damage the
gas cylinder in any way, as this
will result in poor damping per-
formance.
•Always have a Yamaha dealer
service the shock absorber.
WARNING
3-12

EAU01114
PRE-OPERATION CHECKS
Pre-operation check list ....................................................................... 4-1
4