2010 YAMAHA XCITY 250 engine coolant

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

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2175 mm (85.6 in) (without rear carrier)
2215 mm (87.2 in) (with rear carrier)
Overall width:
785 mm (30.9 in)
Overall height:
1475 mm (58.1 in)
Seat height:
790 mm (31.1 in)
Wheelbase:
1470 mm (57.9 in)
Ground clearance:
165 mm (6.50 in)
Minimum turning radius:
2400 mm (94.5 in)Weight:With oil and fuel:
173.0 kg (381 lb)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
249 cm³
Bore × stroke:
69.0 × 66.8 mm (2.72 × 2.63 in)
Compression ratio:
10.00 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 10W-30, SAE 10W-40, SAE 15W-40,
SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard MA
Engine oil quantity:
Periodic oil change:
1.30 L (1.37 US qt, 1.14 Imp.qt)Final transmission oil:Type:
SAE 10W-30 type SE motor oil
Quantity:
0.25 L (0.26 US qt, 0.22 Imp.qt)Cooling system:Coolant reservoir capacity (up to the
maximum level mark):
0.20 L (0.21 US qt, 0.18 Imp.qt)
Radiator capacity (including all routes):
1.02 L (1.08 US qt, 0.90 Imp.qt)
Air filter:Air filter element:
Oil-coated paper elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
10.5 L (2.77 US gal, 2.31 Imp.gal)
Fuel reserve amount:
2.7 L (0.72 US gal, 0.60 Imp.gal)Fuel injection:Throttle body:
ID mark:
1C04 00Spark plug (s):Manufacturer/model:
NGK/DPR8EA-9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:
Dry, centrifugal automaticTransmission:Primary reduction system:
Helical gear
Primary reduction ratio:
40/15 (2.666)
Secondary reduction system:
Helical gear
Secondary reduction ratio:
42/14 (3.000)
Transmission type:
V-belt automatic
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U5B2E2E0.book Page 1 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