2012 YAMAHA XCITY 125 check engine light

PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
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.
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.
EAUM2271
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. A slight tilt to the side can
result in a 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.TIPThe engine oil should be between the
minimum and maximum level marks.
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
U16PE3E0.book Page 10 Tuesday, June 19, 2012 5:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
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 the
side can result in a false reading.
2. Check the coolant level through
the check window.TIPThe coolant should be between the
minimum and maximum level marks.
3. If the coolant is at or below the
minimum level mark, remove the
cowling A. (See page 6-8.)
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
ZAUM0660
1. Coolant reservoir cap
Coolant reservoir capacity:
0.20 L (0.21 US qt, 0.18 Imp.qt)
1
ZAUM0661
U16PE3E0.book Page 14 Tuesday, June 19, 2012 5:17 PM

INDEXAAcceleration and deceleration................. 5-3
Air filter and V-belt case air filter
elements ............................................. 6-15
Auxiliary light bulb, replacing ................ 6-31BBattery................................................... 6-25
Brake fluid, changing ............................ 6-22
Brake fluid level, checking .................... 6-21
Brake lever, front..................................... 3-9
Brake lever, rear ..................................... 3-9
Brake levers, lubricating........................ 6-23
Braking .................................................... 5-3CCables, checking and lubricating .......... 6-22
Care ........................................................ 7-1
Carrier ................................................... 3-16
Catalytic converters .............................. 3-12
Centerstand and sidestand, checking
and lubricating .................................... 6-23
Coolant.................................................. 6-14
Coolant temperature gauge .................... 3-5
Cowlings and panels, removing and
installing................................................ 6-8DDimmer switch ........................................ 3-9
Display, multi-function ............................. 3-5EEngine break-in ....................................... 5-4
Engine oil .............................................. 6-10
Engine trouble warning light.................... 3-3FFinal transmission oil ............................ 6-13
Front and rear brake lever free play...... 6-19Front and rear brake pads, checking .... 6-20
Front fork, checking .............................. 6-24
Fuel....................................................... 3-10
Fuel consumption, tips for reducing........ 5-4
Fuel gauge.............................................. 3-5
Fuel tank cap ........................................ 3-10
Fuses, replacing ................................... 6-27
HHandlebar switches ................................ 3-8
Headlight bulb, replacing ...................... 6-28
High beam indicator light ........................ 3-3
Horn switch ............................................. 3-9IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-17
Immobilizer system ................................. 3-1
Immobilizer system indicator light........... 3-3
Indicator lights and warning light ............ 3-3LLicense plate light bulb, replacing ........ 6-31
Luggage hook ....................................... 3-16MMain switch/steering lock........................ 3-2
Maintenance and lubrication, periodic .... 6-4
Maintenance, emission control system... 6-3
Model label ............................................. 9-1PParking ................................................... 5-5
Part locations .......................................... 2-1SSafe-riding points.................................... 1-5
Safety information................................... 1-1
Seat ...................................................... 3-12Shock absorber assemblies,
adjusting ............................................. 3-15
Sidestand .............................................. 3-16
Spark plug, checking ............................... 6-9
Specifications .......................................... 8-1
Speedometer........................................... 3-4
Starting off ............................................... 5-2
Starting the engine .................................. 5-1
Start switch.............................................. 3-9
Steering, checking................................. 6-25
Storage.................................................... 7-3
Storage compartments .......................... 3-13
TTail/brake light bulb or rear turn signal
light bulb, replacing ............................. 6-30
Throttle grip and cable, checking and
lubricating ........................................... 6-23
Throttle grip free play, checking ............ 6-16
Tires ...................................................... 6-17
Tool kit..................................................... 6-2
Troubleshooting .................................... 6-31
Troubleshooting charts.......................... 6-33
Turn signal indicator light ........................ 3-3
Turn signal light bulb (front),
replacing ............................................. 6-29
Turn signal switch ................................... 3-9VValve clearance..................................... 6-17
Vehicle identification number .................. 9-1WWheel bearings, checking ..................... 6-25
Wheels .................................................. 6-19
Windshield............................................. 3-14
U16PE3E0.book Page 1 Tuesday, June 19, 2012 5:17 PM