2009 YAMAHA AEROX50 check engine light

TABLE OF CONTENTSSAFETY INFORMATION ..................1-1
Further safe-riding points ................1-5
DESCRIPTION ..................................2-1
Left view ..........................................2-1
Right view ........................................2-2
INSTRUMENT AND CONTROL
FUNCTIONS.......................................3-1
Main switch/steering lock ................3-1
Indicator and warning lights ............3-2
Speedometer unit ...........................3-3
Tachometer (if equipped) ................3-3
Fuel gauge ......................................3-4
Handlebar switches ........................3-4
Front brake lever ............................3-5
Rear brake lever .............................3-5
Fuel tank cap ..................................3-5
Fuel .................................................3-6
Catalytic converters ........................3-7
2-stroke engine oil ..........................3-8
Kickstarter .......................................3-9
Rider seat .......................................3-9
Storage compartments .................3-10
Adjusting the shock absorber
assembly (if equipped) ..............3-11FOR YOUR SAFETY –
PRE-OPERATION CHECKS............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting a cold engine .................... 5-1
Starting off ...................................... 5-2
Acceleration and deceleration ........ 5-2
Braking ........................................... 5-2
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-3
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT................................... 6-1
Periodic maintenance and
lubrication chart .......................... 6-2
Removing and installing the
cowling and panel ....................... 6-6
Checking the spark plug ................. 6-7
Final transmission oil ...................... 6-8
Coolant ........................................... 6-9
Cleaning the air filter element ...... 6-10
Adjusting the carburetor ............... 6-11
Checking the throttle cable free
play ........................................... 6-11
Tires ............................................. 6-12
Cast wheels .................................. 6-13
Checking the front and rear brake
lever free play ........................... 6-14Checking the front and rear
brake pads ................................ 6-14
Checking the brake fluid level ...... 6-15
Changing the brake fluid .............. 6-16
Checking and lubricating the
throttle grip and cable ............... 6-16
Lubricating the front and rear
brake levers .............................. 6-16
Checking and lubricating the
centerstand ............................... 6-17
Checking the front fork ................. 6-17
Checking the steering .................. 6-18
Checking the wheel bearings ....... 6-18
Battery ......................................... 6-19
Replacing the fuse ....................... 6-20
Replacing the headlight bulb ....... 6-21
Replacing the tail/brake light
bulb ........................................... 6-22
Replacing a turn signal light
bulb ........................................... 6-22
Troubleshooting ........................... 6-23
Troubleshooting charts ................ 6-24
SCOOTER CARE AND STORAGE... 7-1
Care ............................................... 7-1
Storage .......................................... 7-3
SPECIFICATIONS ............................ 8-1
CONSUMER INFORMATION............ 9-1
Identification numbers .................... 9-1U3C6E1E0.book Page 1 Friday, August 8, 2008 10:09 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-1
3
EAU10460
Main switch/steering lock The main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
EAU10640
ON“”
All electrical circuits are supplied with
power, and the engine can be started.
The key cannot be removed.TIPThe headlight, meter lighting and tail-
light come on automatically when theengine is started.
EAU10661
OFF“”
All electrical systems are off. The key
can be removed.
WARNING
EWA10061
Never turn the key to“” or“”
while the vehicle is moving. Other-
wise the electrical systems will be
switched off, which may result inloss of control or an accident.
EAU10670
CHECK“”
The 2-stroke engine oil level warning
light should come on. (See page 3-2.)
EAU10681
LOCK“”
The steering is locked, and all electrical
systems are off. The key can be re-
moved.
To lock the steering1. Turn the handlebars all the way to
the left.
2. Push the key in from the“” posi-
tion, and then turn it to“” while
still pushing it.
3. Remove the key.To unlock the steering
Push the key in, and then turn it to“”
while still pushing it.
PUSHOPEN
ZAUM0253
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INSTRUMENT AND CONTROL FUNCTIONS
3-2
3
EAU11003
Indicator and warning lights
EAU11020
Turn signal indicator light“”
This indicator light flashes when the
turn signal switch is pushed to the left or
right.
EAU11080
High beam indicator light“”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU11181
Oil level warning light“”
This warning light comes on when the
key is in the“” position or if the oil lev-
el in the 2-stroke engine oil tank is low
during operation. If the warning light
comes on during operation, stop imme-
diately and fill the oil tank with Ya-
malube 2 or equivalent 2-stroke engine
oil of either JASO grade “FC” or ISO
grades “EG-C” or “EG-D”. The warning
light should go off after the 2-stroke en-
gine oil tank has been refilled.TIPIf the warning light does not come on
when the key is in the“” position or
does not go off after the 2-stroke en-
gine oil tank has been refilled, have a
Yamaha dealer check the electrical cir-cuit.NOTICE
ECA16291
Do not operate the vehicle until you
know that the engine oil level is suf-ficient.
EAU11433
Coolant temperature warning
light“”
This warning light comes on if the en-
gine overheats. If this occurs, stop the
engine immediately and allow the en-
gine to cool.NOTICE
ECA10021
Do not continue to operate the en-gine if it is overheating.TIP

For radiator-fan-equipped vehi-
cles, the radiator fan(s) automati-
cally switch on or off according to
the coolant temperature in the ra-
diator.
1. Turn signal indicator light“”
2. High beam indicator light“”
3. Oil level warning light“”
TEMP
123
ZAUM0254
1. Coolant temperature warning light“”
TEMP
Km / h
E1/2
F
1
ZAUM0255
U3C6E1E0.book Page 2 Friday, August 8, 2008 10:09 AM

OPERATION AND IMPORTANT RIDING POINTS
5-1
5
EAU15951
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10271
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accidentor injury.
EAU16562
Starting a cold engine NOTICE
ECA10250
See page 5-3 for engine break-in in-
structions prior to operating the ve-hicle for the first time.
1. Turn the key to“”, and when the
oil level warning light comes on,
turn it to“”.NOTICE
ECA10240
If the oil level warning light does not
come on, have a Yamaha dealercheck the electrical circuit.
2. Close the throttle completely.3. While applying the front or rear
brake, start the engine by pushing
the start switch or by pushing the
kickstarter lever down. NOTICE:
For maximum engine life, never
accelerate hard when the en-
gine is cold!
[ECA11041]
If the engine fails to start by push-
ing the start switch, release the
switch, wait a few seconds, and
then try again. Each starting at-
tempt should be as short as possi-
ble to preserve the battery. Do not
crank the engine more than 5 sec-
onds on any one attempt. If the en-
gine does not start with the starter
motor, try using the kickstarter.
PUSHOPEN
ZAUM0253
ZAUM0367
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
EAUM2070
TIP

The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
18*CarburetorAdjust engine idling speed.√√√√√√
19*Autolube pumpCheck operation.
Bleed if necessary.√√√√
20*Cooling systemCheck coolant level and vehicle
for coolant leakage.√√√√√
Change. Every 3 years
21Final transmission
oilCheck vehicle for oil leakage.√√ √
Change.√√√
22*V- b e l tReplace. Every 10000 km (6000 mi)
23*Front and rear brake
switchesCheck operation.√√√√√√
24Moving parts and
cablesLubricate.√√√√√
25*Throttle grip hous-
ing and cableCheck operation and free play.
Adjust the throttle cable free play
if necessary.
Lubricate the throttle grip housing
and cable.√√√√√
26*Lights, signals and
switchesCheck operation.
Adjust headlight beam.√√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
U3C6E1E0.book Page 4 Friday, August 8, 2008 10:09 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-7
6
EAU19622
Checking the spark plug The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode, it
should be removed and checked in ac-
cordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of the spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally). If
the spark plug shows a distinctly differ-
ent color, the engine could be operating
improperly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
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 speci-fied torque as soon as possible.
Specified spark plug:
NGK/BR8HS
1. Spark plug gapSpark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Tightening torque:
Spark plug:
20 Nm (2.0 m·kgf, 14 ft·lbf)
1
ZAUM0037
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6
EAU20070
Coolant The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAUM2102
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.TIP

The coolant level must be checked
on a cold engine since the level
varies with engine temperature.


Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to theside can result in a false reading.
2. Check the coolant level through
the check window.
TIPThe coolant should be between theminimum and maximum level marks.3. If the coolant is at or below the
minimum level mark, remove the
cowling A. (See page 6-6.)
4. Open the reservoir cap, and then
add coolant to the maximum level
mark. WARNING! Remove only
the coolant reservoir cap. Never
attempt to remove the radiator
cap when the engine is hot.
[EWA15161]
NOTICE: If coolant is not
available, use distilled water or
soft tap water instead. Do not
use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-wise the cooling system will not
be protected against frost and
corrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possible, otherwise the
effectiveness of the coolant will
be reduced.
[ECA10472]
5. Close the reservoir cap, and then
install the cowling.
1. Maximum level mark
2. Minimum level mark
1
2
ZAUM0591
1. Coolant reservoir capCoolant reservoir capacity:
0.25 L (0.26 US qt, 0.22 Imp.qt)1ZAUM0274
U3C6E1E0.book Page 9 Friday, August 8, 2008 10:09 AM

INDEXAAcceleration and deceleration................. 5-2
Air filter element, cleaning..................... 6-10BBattery................................................... 6-19
Brake fluid, changing ............................ 6-16
Brake fluid level, checking .................... 6-15
Brake lever, front..................................... 3-5
Brake lever, rear ..................................... 3-5
Brake levers, lubricating........................ 6-16
Braking .................................................... 5-2CCarburetor,adjusting ............................. 6-11
Care ........................................................ 7-1
Catalytic converters ................................ 3-7
Centerstand, checking and
lubricating ........................................... 6-17
Coolant.................................................... 6-9
Coolant temperature warning light .......... 3-2
Cowling and panel, removing and
installing................................................ 6-6DDimmer switch ........................................ 3-4EEngine break-in ....................................... 5-3
Engine oil ................................................ 3-8FFinal transmission oil .............................. 6-8
Front and rear brake lever free play,
checking ............................................. 6-14
Front and rear brake pads, checking .... 6-14
Front fork, checking .............................. 6-17
Fuel ......................................................... 3-6
Fuel consumption, tips for reducing ........ 5-3Fuel gauge.............................................. 3-4
Fuel tank cap .......................................... 3-5
Fuse, replacing ..................................... 6-20
HHandlebar switches ................................ 3-4
Headlight bulb, replacing ...................... 6-21
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-4IIdentification numbers ............................ 9-1
Indicator and warning lights .................... 3-2KKey identification number ....................... 9-1
Kickstarter............................................... 3-9MMain switch/steering lock........................ 3-1
Model label ............................................. 9-2OOil level warning light.............................. 3-2PParking ................................................... 5-4
Part locations .......................................... 2-1
Periodic maintenance and lubrication
chart ..................................................... 6-2RRider seat ............................................... 3-9SSafe-riding points.................................... 1-5
Safety information................................... 1-1
Shock absorber assembly, adjusting
(if equipped) ....................................... 3-11
Spark plug, checking .............................. 6-7
Specifications ......................................... 8-1
Speedometer unit ................................... 3-3Starting a cold engine ............................. 5-1
Starting off ............................................... 5-2
Start switch.............................................. 3-4
Steering, checking................................. 6-18
Storage.................................................... 7-3
Storage compartments .......................... 3-10
TTachometer (if equipped) ........................ 3-3
Tail/brake light bulb, replacing .............. 6-22
Throttle cable free play, checking ......... 6-11
Throttle grip and cable, checking and
lubricating ........................................... 6-16
Tires ...................................................... 6-12
Troubleshooting .................................... 6-23
Troubleshooting charts.......................... 6-24
Turn signal indicator light ........................ 3-2
Turn signal light bulb, replacing ............ 6-22
Turn signal switch ................................... 3-4VVehicle identification number .................. 9-1WWheel bearings, checking ..................... 6-18
Wheels .................................................. 6-13
U3C6E1E0.book Page 1 Friday, August 8, 2008 10:09 AM