2009 YAMAHA XCITY 125 engine coolant

PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
6Engine 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 hissingsound 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 coolantas 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.
U16PE1E0.book Page 31 Monday, July 28, 2008 9:57 AM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2175 mm (85.6 in)
Overall width:
785 mm (30.9 in)
Overall height:
1475 mm (58.1 in)
Seat height:
790 mm (31.1 in)
Wheelbase:
1455 mm (57.3 in)
Ground clearance:
165 mm (6.50 in)
Minimum turning radius:
2300 mm (90.6 in)Weight:With oil and fuel:
167.0 kg (368 lb)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
124.6 cm³
Bore × stroke:
52.0 × 58.6 mm (2.05 × 2.31 in)
Compression ratio:
11.20 :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:
Without oil filter element replacement:
1.40 L (1.48 US qt, 1.23 Imp.qt)
With oil filter element replacement:
1.50 L (1.59 US qt, 1.32 Imp.qt)Final transmission oil:Type:
SAE 10W-30 type SE motor oil
Quantity:
0.21 L (0.22 US qt, 0.18 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:
Manufacturer:
AISAN
Type/quantity:
EFI / 1Spark plug (s):Manufacturer/model:
NGK/CPR9EA-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:
41/14 (2.929)
Secondary reduction system:
Helical gear
Secondary reduction ratio:
44/12 (3.666)
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U16PE1E0.book Page 1 Monday, July 28, 2008 9:57 AM

INDEXAAcceleration and deceleration................. 5-2
Air filter and V-belt case air filter
elements ............................................. 6-13
Auxiliary light bulb, replacing ................ 6-28BBattery................................................... 6-23
Brake fluid, changing ............................ 6-19
Brake fluid level, checking .................... 6-18
Brake lever, front..................................... 3-9
Brake lever, rear ..................................... 3-9
Brake levers, lubricating........................ 6-20
Braking .................................................... 5-3CCables, checking and lubricating .......... 6-20
Care ........................................................ 7-1
Carrier ................................................... 3-16
Catalytic converters .............................. 3-12
Centerstand and sidestand,
checking and lubricating ..................... 6-21
Coolant.................................................. 6-12
Coolant temperature gauge .................... 3-5
Cowlings and panels,
removing and installing ......................... 6-6DDimmer switch ........................................ 3-9
Display, multi-function ............................. 3-5EEngine break-in ....................................... 5-4
Engine oil ................................................ 6-8
Engine trouble warning light.................... 3-3FFinal transmission oil ............................ 6-11
Front and rear brake lever free play...... 6-17Front and rear brake pads, checking .... 6-18
Front fork, checking .............................. 6-21
Fuel....................................................... 3-10
Fuel consumption, tips for reducing........ 5-3
Fuel gauge.............................................. 3-5
Fuel tank cap ........................................ 3-10
Fuses, replacing ................................... 6-24
HHandlebar switches ................................ 3-8
Headlight bulb, replacing ...................... 6-25
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 and warning lights .................... 3-3KKey identification number ....................... 9-1LLicense plate light bulb, replacing ........ 6-28
Luggage hook ....................................... 3-16MMain switch/steering lock........................ 3-2
Model label ............................................. 9-2PParking ................................................... 5-4
Part locations .......................................... 2-1
Periodic maintenance and lubrication
chart ..................................................... 6-2SSafe-riding points.................................... 1-5
Safety information................................... 1-1Seat ....................................................... 3-12
Shock absorber assemblies,
adjusting ............................................. 3-15
Sidestand .............................................. 3-16
Spark plug, checking ............................... 6-7
Specifications .......................................... 8-1
Speedometer........................................... 3-4
Starting off ............................................... 5-2
Starting the engine .................................. 5-1
Start switch.............................................. 3-9
Steering, checking................................. 6-22
Storage.................................................... 7-3
Storage compartments .......................... 3-13
TTail/brake light bulb or rear turn signal
light bulb, replacing ............................. 6-27
Throttle cable free play, checking ......... 6-14
Throttle grip and cable,
checking and lubricating ..................... 6-20
Tires ...................................................... 6-15
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-29
Troubleshooting charts.......................... 6-30
Turn signal indicator lights ...................... 3-3
Turn signal light bulb (front),
replacing ............................................. 6-27
Turn signal switch ................................... 3-9VValve clearance..................................... 6-15
Vehicle identification number .................. 9-1WWheel bearings, checking ..................... 6-22
Wheels .................................................. 6-17
Windshield............................................. 3-14
U16PE1E0.book Page 1 Monday, July 28, 2008 9:57 AM