2008 YAMAHA XCITY 125 light

PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
6To install the cowling
1. Connect the headlight coupler and
the turn signal couplers.
2. Place the cowling in the original
position, and then install the
screws.
EAU19481
Panel A
To remove the panel1. Open the seat. (See page 3-11.)
2. Remove the screws, and then pull
the panel off as shown.
To install the panelPlace the panel in the original position,
and then install the screws.
EAU19210
Panel B
To remove the panelRemove the screws, and then take the
panel off.
To install the panelPlace the panel in the original position,
and then install the screws.
EAU19621
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.
1. Screw
2. Panel AZAUM0656
1
2
1. ScrewZAUM0657
1
Specified spark plug:
NGK/CPR9EA-9
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6 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.
NOTE:If 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.
EAUM2270
Engine oil The engine oil level should be checked
before each ride. In addition, the oil
must be changed at the intervals spec-
ified in the periodic maintenance and
lubrication chart and when the service
indicator light comes on.
To check the engine oil level
1. Place the scooter on the center-
stand.NOTE:Make sure that the scooter is posi-
tioned straight up when checking the oil
level. A slight tilt to the side can result ina false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, remove the oil filler cap, wipe
the dipstick clean, insert it back
into the oil filler hole (without
screwing it in), and then remove it
again to check the oil level.
1. Spark plug gapSpark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
1
ZAUM0037
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-11
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.
EAUM2101
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.NOTE:

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.
NOTE:The 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 6-5.)
4. Open the reservoir cap, and then
add coolant to the maximum level
mark.
CAUTION:
ECA10471


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 antifreeze content of
the coolant as soon as possible,
otherwise the effectiveness ofthe coolant will be reduced.WARNING
EWA10380
Never attempt to remove the radiatorcap when the engine is hot.
5. Close the reservoir cap, and then
install the cowling.
1. Maximum level mark
2. Minimum level mark
1. Coolant reservoir cap
1
2
ZAUM0660
1
ZAUM0661
Coolant reservoir capacity:
0.20 L (0.21 US qt) (0.18 Imp.qt)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
6
CAUTION:
ECA10640
Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly afire.
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAUM2180
Replacing a headlight bulb This model is equipped with quartz bulb
headlights. If a headlight bulb burns
out, replace it as follows.
To replace a high beam headlight
bulb
1. Remove cowling A. (See page
6-5.)
2. Remove the headlight bulb cover.
3. Unhook the headlight bulb holder
by turning it counterclockwise, and
then remove the defective bulb.
1. Fuse box
2. Radiator fan fuse
3. ECU fuse
4. Backup fuse
5. Signaling system fuse
6. Headlight fuse
7. Ignition fuse
8. Spare fuse
9. Spare fuse
10.Spare fuse
1
ZAUM0709
23
8910456 7
Specified fuses:
Main fuse:
30.0 A
ECU fuse:
5.0 A
Signaling system fuse:
15.0 A
Ignition fuse:
10.0 A
Headlight fuse:
15.0 A
Backup fuse:
5.0 A
Radiator fan fuse:
5.0 A
1. Headlight bulb cover
1
ZAUM0674
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
WARNING
EWA10790
Headlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooleddown.
4. Place a new headlight bulb into po-
sition, and then secure it with the
bulb holder by turning it clockwise.CAUTION:
ECA10650
Take care not to damage the follow-
ing parts:


Headlight bulb
Do not touch the glass part of
the headlight bulb to keep it free
from oil, otherwise the transpar-
ency of the glass, the luminosity
of the bulb, and the bulb life will
be adversely affected. Thor-
oughly clean off any dirt and fin-
gerprints on the headlight bulb
using a cloth moistened with al-
cohol or thinner.


Headlight lens
Do not affix any type of tinted
film or stickers to the headlight
lens.
Do not use a headlight bulb of awattage higher than specified.
5. Install the headlight bulb cover.
6. Install the cowling.
7. Have a Yamaha dealer adjust the
headlight beam if necessary.
To replace a low beam headlight
bulb
1. Remove cowling A. (See page
6-5.)
2. Remove the headlight bulb cover.3. Disconnect the headlight coupler.
4. Unhook the headlight bulb holder,
and then remove the defective
bulb.
1. Headlight bulb holderZAUM0675
1
1. Headlight bulb cover
1. Headlight bulb
2. Headlight coupler
1
ZAUM0677 ZAUM0678
1
2
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-26
6
WARNING
EWA10790
Headlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooleddown.
5. Place a new headlight bulb into po-
sition, and then secure it with the
bulb holder.CAUTION:
ECA10650
Take care not to damage the follow-
ing parts:

Headlight bulb
Do not touch the glass part of
the headlight bulb to keep it free
from oil, otherwise the transpar-
ency of the glass, the luminosity
of the bulb, and the bulb life will
be adversely affected. Thor-
oughly clean off any dirt and fin-
gerprints on the headlight bulb
using a cloth moistened with al-
cohol or thinner.


Headlight lens
Do not affix any type of tinted
film or stickers to the headlight
lens.
Do not use a headlight bulb of awattage higher than specified.
6. Connect the headlight coupler.
7. Install the headlight bulb cover.
8. Install the cowling.
9. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAUT1260
Replacing a front turn signal
light bulb CAUTION:
ECA10670
It is advisable to have a Yamahadealer perform this job.
1. Place the scooter on the center-
stand.
2. Remove cowling A. (See page
6-5.)
3. Remove the socket (together with
the bulb) by turning it counter-
clockwise.
4. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.
1. Do not touch the glass part of the bulb.
1. Turn signal light bulb socket
1
ZAUM0465
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6 5. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
6. Install the socket (together with the
bulb) by turning it clockwise.
7. Install the cowling.
EAUM2190
Replacing a tail/brake light
bulb or a rear turn signal light
bulb 1. Place the vehicle on the center-
stand.
2. Remove panel B. (See page 6-5.)
3. Remove the tail/brake light unit by
removing the screws.
4. Remove the socket (together with
the bulb) by turning it counter-
clockwise.5. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.
6. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
7. Install the socket (together with the
bulb) by turning it clockwise.
8. Install the screws and the
tail/brake light unit.
9. Install the panel.1. ScrewZAUM0679
1
1. Tail/brake light bulb socket
2. Turn signal light bulb socketZAUM0680
12
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-28
6
EAUM2200
Replacing the license plate
light bulb 1. Remove the socket (together with
the bulb) by pulling it out.
2. Remove the defective bulb by pull-
ing it out.
3. Insert a new bulb into the socket.
4. Install the socket (together with the
bulb) by pushing it in.
EAUM2211
Replacing an auxiliary light
bulb This model is equipped with two auxil-
iary lights. If an auxiliary light bulb burns
out, replace it as follows.
1. Remove cowling A. (See page
6-5.)
2. Remove the socket (together with
the bulb) by pulling it out.
3. Remove the defective bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the
bulb) by pushing it in.
6. Install the cowling.
EAU25880
Troubleshooting Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur dur-
ing 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 your-
self. However, should your scooter re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
1. License plate light bulb socketZAUM0681
1
1. Auxiliary light bulb socketZAUM0682
1
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