check engine YAMAHA XCITY 125 2012 Owner's Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
6
EAU21401
Valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAUM2044
Tires Tires are the only contact between the
vehicle and the road. Safety in all con-
ditions of riding depends on a relatively
small area of road contact. Therefore, it
is essential to maintain the tires in good
condition at all times and replace them
at the appropriate time with the speci-
fied tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10503
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.●
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).
●
The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total
weight of rider, passenger, car-
go, and accessories approved
for this model.
ZAUM0053
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-22
6 fluid level goes down suddenly, have a
Yamaha dealer check the cause before
further riding.
EAU22721
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the TIP after the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the brake master cylin-
der and caliper as well as the brake
hose replaced at the intervals listed be-
low or whenever they are damaged or
leaking.●
Oil seals: Replace every two
years.
●
Brake hose: Replace every four
years.
EAU23095
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe conditions.[EWA10711]
Recommended lubricant:
Yamaha Chain and Cable Lube or
engine oil
U16PE3E0.book Page 22 Tuesday, June 19, 2012 5:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6
EAU42134
Troubleshooting charts Starting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.
DryWet
Operate the electric starter.
Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
U16PE3E0.book Page 33 Tuesday, June 19, 2012 5:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-34
6 Engine 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 hissing
sound 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 coolant
as 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.
U16PE3E0.book Page 34 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
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