2010 YAMAHA XCITY 250 check engine

PERIODIC MAINTENANCE AND ADJUSTMENT
6-13
63. Pull the air filter element out.
4. Insert a new air filter element into
the air filter case.
5. Install the air filter case cover by in-
stalling the screws.
Cleaning the V-belt case air filter el-
ement
1. Remove the V-belt case air filter
cover by removing the screws.
2. Remove the air filter element, and
then blow out the dirt with com-
pressed air as shown.3. Check the air filter element for
damage and replace it if neces-
sary.
4. Install the air filter element with the
colored side facing outward.
NOTICE: Make sure that each fil-
ter element is properly seated in
its case. The engine should nev-
er be operated without the filter
elements installed, otherwise
the piston(s) and/or cylinder(s)
may become excessively worn.
[ECA10531]
5. Install the V-belt case air filter cov-
er by installing the screws.
EAU21382
Checking the throttle cable
free play The throttle cable free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
1. V-belt case air filter cover
2. Screw
1. V-belt case air filter cover
2. V-belt case air filter element
1. Throttle cable free play1ZAUM0051
U5B2E2E0.book Page 13 Friday, July 3, 2009 7:54 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
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.
EAUM2041
Tires To maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10501
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
Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):
Fr o nt :
170 kPa (1.70 kgf/cm², 25 psi)
Rear:
190 kPa (1.90 kgf/cm², 28 psi)
90–185 kg (198–408 lb):
Fr o nt :
180 kPa (1.80 kgf/cm², 26 psi)
Rear:
200 kPa (2.00 kgf/cm², 29 psi)
Maximum load*:
185 kg (408 lb)
* Total weight of rider, passenger, car-
go and accessories
U5B2E2E0.book Page 14 Friday, July 3, 2009 7:54 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
6
EAU23101
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
sheath may interfere with proper ca-
ble operation and will cause the in-
ner cable to rust. Replace a
damaged cable as soon as possible
to prevent unsafe conditions.
[EWA10721]EAU23111
Checking and lubricating the
throttle grip and cable The operation of the throttle grip should
be checked before each ride. In addi-
tion, the cable should be lubricated at
the intervals specified in the periodic
maintenance chart.
EAU23172
Lubricating the front and rear
brake levers The pivoting points of the front and rear
brake levers must be lubricated at the
intervals specified in the periodic main-
tenance and lubrication chart.
Recommended lubricant:
Engine oil
Recommended lubricant:
Silicone greaseZAUM0061
U5B2E2E0.book Page 19 Friday, July 3, 2009 7:54 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-29
6
EAU42131
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.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Operate the electric starter.
U5B2E2E0.book Page 29 Friday, July 3, 2009 7:54 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-30
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.
U5B2E2E0.book Page 30 Friday, July 3, 2009 7:54 PM

INDEX
AAcceleration and deceleration ................ 5-2
Air filter and V-belt case air filter
elements ............................................. 6-12
Auxiliary light bulb, replacing ................ 6-27BBattery .................................................. 6-22
Brake fluid, changing ............................ 6-18
Brake fluid level, checking .................... 6-17
Brake lever, front .................................... 3-7
Brake lever, rear ..................................... 3-7
Brake levers, lubricating ....................... 6-19
Braking ................................................... 5-3CCables, checking and lubricating .......... 6-19
Care ........................................................ 7-1
Carrier (if applicable) ............................ 3-13
Catalytic converters ................................ 3-9
Centerstand and sidestand, checking
and lubricating .................................... 6-20
Coolant ................................................. 6-11
Coolant temperature gauge .................... 3-3
Cowlings and panels, removing and
installing ............................................... 6-6DDimmer switch ........................................ 3-6
Display, multi-function ............................ 3-3EEngine break-in ...................................... 5-4
Engine oil ................................................ 6-8
Engine trouble warning light ................... 3-2FFinal transmission oil ............................ 6-10
Front and rear brake lever free play ..... 6-16Front and rear brake pads, checking .... 6-17
Front fork, checking...............................6-20
Fuel ......................................................... 3-8
Fuel consumption, tips for reducing ........ 5-3
Fuel gauge .............................................. 3-2
Fuel tank cap........................................... 3-7
Fuses, replacing .................................... 6-23
HHandlebar switches ................................. 3-6
Headlight bulb, replacing....................... 6-24
High beam indicator light......................... 3-1
Horn switch ............................................. 3-6IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-15
Indicator and warning lights .................... 3-1KKey identification number ........................ 9-1LLicense plate light bulb, replacing ......... 6-27
Luggage hook ....................................... 3-14MMain switch/steering lock ........................ 3-1
Maintenance and lubrication, periodic..... 6-3
Maintenance, emission control system ... 6-2
Model label .............................................. 9-2PParking ....................................................5-4
Part locations .......................................... 2-1SSafe-riding points .................................... 1-5
Safety information ...................................1-1
Seat ....................................................... 3-10Shock absorber assemblies,
adjusting ............................................. 3-13
Sidestand .............................................. 3-14
Spark plug, checking .............................. 6-7
Specifications.......................................... 8-1
Speedometer .......................................... 3-2
Starting off .............................................. 5-2
Starting the engine.................................. 5-1
Start switch ............................................. 3-6
Steering, checking ................................ 6-21
Storage ................................................... 7-3
Storage compartments ......................... 3-11
TTail/brake light bulb or rear turn signal
light bulb, replacing............................. 6-26
Throttle cable free play, checking ......... 6-13
Throttle grip and cable, checking and
lubricating ........................................... 6-19
Tires ...................................................... 6-14
Tool kit .................................................... 6-1
Troubleshooting .................................... 6-28
Troubleshooting charts ......................... 6-29
Turn signal indicator lights ...................... 3-1
Turn signal light bulb (front),
replacing ............................................. 6-26
Turn signal switch ................................... 3-6VValve clearance .................................... 6-14
Vehicle identification number .................. 9-1WWheel bearings, checking..................... 6-21
Wheels .................................................. 6-16
Windshield ............................................ 3-12
U5B2E2E0.book Page 1 Friday, July 3, 2009 7:54 PM