2009 YAMAHA AEROX50 coolant level

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

DESCRIPTION
2-1
2
EAU10410
Left view
1
23
4
6 8
9
7
5
1. Rear brake lever (page 3-5)
2. Left handlebar switches (page 3-4)
3. Speedometer unit (page 3-3)
4. Main switch/steering lock (page 3-1)
5. Final transmission oil filler cap (page 6-8)
6. Centerstand (page 6-17)
7. Kickstarter (page 3-9)
8. Air filter element (page 6-10)9. Coolant level check window (page 6-9)U3C6E1E0.book Page 1 Friday, August 8, 2008 10:09 AM

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

FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-1
4
EAU15596
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11151
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided inthis manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
ITEM CHECKS PAGE
FuelCheck fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.3-6
2-stroke engine oilCheck oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage.3-8
Final transmission oilCheck vehicle for oil leakage. 6-8
CoolantCheck coolant level in reservoir.
If necessary, add recommended coolant to specified level.
Check cooling system for leakage.6-9
Front brakeCheck operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add recommended brake fluid to specified level.
Check hydraulic system for leakage.6-14, 6-14, 6-15
U3C6E1E0.book Page 1 Friday, August 8, 2008 10:09 AM

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
6-9
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

PERIODIC MAINTENANCE AND ADJUSTMENT
6-25
6Engine overheating
WARNING
EWA10400


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 hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas soon as possible.
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 TIP.)
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.
U3C6E1E0.book Page 25 Friday, August 8, 2008 10:09 AM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
1818 mm (71.6 in)
Overall width:
719 mm (28.3 in)
Overall height:
1170 mm (46.1 in)
Seat height:
828 mm (32.6 in)
Wheelbase:
1256 mm (49.4 in)
Ground clearance:
148 mm (5.83 in)
Minimum turning radius:
1800 mm (70.9 in)Weight:With oil and fuel:
97.0 kg (214 lb)Engine:Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
49.0 cm³
Bore × stroke:
40.0 × 39.2 mm (1.57 × 1.54 in)
Compression ratio:
7.90 :1
Starting system:
Electric starter and kickstarter
Lubrication system:
Separate lubrication (Yamaha autolube)
Engine oil:Type:
YAMALUBE 2 or 2-stroke engine oil (JASO
FC grade) or (ISO EG-C or EG-D grade)
Engine oil quantity:
Quantity:
1.40 L (1.48 US qt, 1.23 Imp.qt)Final transmission oil:Type:
SAE 10W-30 type SE motor oil
Quantity:
0.11 L (0.12 US qt, 0.10 Imp.qt)Cooling system:Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
1.20 L (1.27 US qt, 1.06 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
7.0 L (1.85 US gal, 1.54 Imp.gal)Carburetor:Manufacturer:
GURTNER
Type × quantity:
PY 12 x 1Spark plug (s):Manufacturer/model:
NGK/BR8HSSpark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:Clutch type:
Dry, centrifugal automaticTransmission:Primary reduction system:
Helical gear
Primary reduction ratio:
52 × 13 (4.000)
Secondary reduction system:
Spur gear
Secondary reduction ratio:
43 × 14 (3.070)
Transmission type:
V-belt automatic
Operation:
Centrifugal automatic typeChassis:Frame type:
Steel tube underbone
Caster angle:
27.00 °
Trail:
90.0 mm (3.54 in)Front tire:Type:
Tubeless
Size:
130/60-13 53L (MICHELIN), 53P (PIRELLI)
Manufacturer/model:
MICHELIN / PILOT SPORT
Manufacturer/model:
PIRELLI / EVO21
U3C6E1E0.book Page 1 Friday, August 8, 2008 10:09 AM