engine coolant YAMAHA WR 250R 2009 User Guide

PERIODIC MAINTENANCE AND ADJUSTMENT
6-42
2
3
4
5
67
8
9 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.
TIP

If 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.

8-1
1
2
3
4
5
6
7
8
9

SPECIFICATIONS
EAU2633T

Dimensions:
Overall length:
2180 mm (85.8 in)
Overall width:
810 mm (31.9 in)
Overall height:
1230 mm (48.4 in)
Seat height:
930 mm (36.6 in)
Wheelbase:
1420 mm (55.9 in)
Ground clearance:
300 mm (11.81 in)
Minimum turning radius:
2300 mm (90.6 in)
Weight:
With oil and fuel:
134.0 kg (295 lb)
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
250.0 cm
3

Bore
×
stroke:
77.0
×
53.6 mm (3.03
×
2.11 in)
Compression ratio:
11.80 :1
Starting system:
Electric starter
Lubrication system:
Wet sump

Engine oil:
Type:
SAE 10W-30, SAE 10W-40, SAE 10W-50,
SAE 15W-40, SAE 20W-40 or SAE
20W-50
Recommended engine oil grade:
API service SG type or higher, JASO stan-
dard MA
Engine oil quantity:
Without oil filter element replacement:
1.30 L (1.37 US qt, 1.14 Imp.qt)
With oil filter element replacement:
1.40 L (1.48 US qt, 1.23 Imp.qt)
Cooling system:
Coolant reservoir capacity (up to the maxi-
mum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
0.90 L (0.95 US qt, 0.79 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
7.6 L (2.01 US gal, 1.67 Imp.gal)
Fuel reserve amount:
2.1 L (0.55 US gal, 0.46 Imp.gal)
Fuel injection:
Throttle body:
Type/quantity:
38EIS/1
Spark plug (s):
Manufacturer/model:
NGK/CR9EK
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, multiple-disc
Transmission:
Primary reduction system:
Spur gear
Primary reduction ratio:
78/25 (3.120)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
43/13 (3.308)
Transmission type:
Constant mesh 6-speed
Operation:
Left foot operation
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50

SPECIFICATIONS
8-3
1
2
3
4
5
6
7
8
9Battery:

Model:
YTZ7S
Voltage, capacity:
12 V, 6.0 Ah
Headlight:
Bulb type:
Halogen bulb
Bulb voltage, wattage
×
quantity:
Headlight:
12 V, 60 W/55 W
Tail/brake light:
LED
Front turn signal light:
12 V, 10.0 W
×
2
Rear turn signal light:
12 V, 10.0 W
×
2
Auxiliary light:
12 V, 5.0 W
×
1
License plate light:
12 V, 5.0 W
Meter lighting:
EL (Electroluminescent)
Neutral indicator light:
LED
High beam indicator light:
LED
Turn signal indicator light:
LED
Fuel level warning light:
LED
Coolant temperature warning light:
LEDEngine trouble warning light:
LED

Fuses:
Main fuse:
30.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
7.5 A
Radiator fan fuse:
7.5 A
Fuel injection system fuse:
7.5 A
Backup fuse:
7.5 A

INDEX
A
Air filter element and check hose,
cleaning .................................................6-16
Auxiliary light bulb, replacing ...................6-36
B
Battery .....................................................6-31
Brake and clutch levers, checking and
lubricating ..............................................6-28
Brake fluid, changing ...............................6-25
Brake fluid level, checking .......................6-24
Brake lever ..............................................3-10
Brake lever free play, adjusting ...............6-22
Brake pedal .............................................3-10
Brake pedal, checking and lubricating .....6-28
C
Cables, checking and lubricating .............6-27
Care ...........................................................7-1
Catalytic converter ...................................3-13
Clutch lever ................................................3-9
Clutch lever free play, adjusting ..............6-21
Coolant ....................................................6-13
Coolant temperature warning light .............3-2
D
Dimmer switch ...........................................3-9
Drive chain, cleaning and lubricating .......6-26
Drive chain slack .....................................6-25
E
Engine break-in .........................................5-3
Engine idling speed .................................6-18
Engine oil and oil filter element ................6-10
Engine stop switch.....................................3-9
Engine trouble warning light ......................3-3
EXUP system ..........................................3-18
F
Front and rear brake pads, checking....... 6-23
Front fork, adjusting................................. 3-14
Front fork, bleeding ................................. 3-16
Front fork, checking ................................. 6-29
Fuel ......................................................... 3-11
Fuel consumption, tips for reducing .......... 5-3
Fuel level warning light .............................. 3-2
Fuel tank cap ........................................... 3-11
Fuses, replacing ...................................... 6-32
H
Handlebar switches ................................... 3-8
Headlight bulb, replacing ......................... 6-33
Helmet holder .......................................... 3-14
High beam indicator light ........................... 3-2
Horn switch................................................ 3-9
I
Identification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-19
Indicator and warning lights....................... 3-2
K
Key identification number .......................... 9-1
L
License plate light bulb, replacing ........... 6-35
M
Main switch/steering lock .......................... 3-1
Maintenance and lubrication, periodic ....... 6-3
Maintenance, emission control system ..... 6-2
Matte color, caution ................................... 7-1
Model label ................................................ 9-2
Multi-function display ................................. 3-3
N
Neutral indicator light................................. 3-2
P
Panels, removing and installing ................ 6-7
Parking ...................................................... 5-4
Part locations ............................................ 2-1
R
Rear brake light switch, adjusting ........... 6-23
Rear suspension, lubricating ................... 6-29
S
Safety information ..................................... 1-1
Seat ......................................................... 3-13
Shifting ...................................................... 5-2
Shift pedal ............................................... 3-10
Shock absorber assembly, adjusting ...... 3-17
Sidestand ................................................ 3-19
Sidestand, checking and lubricating........ 6-29
Spark plug, checking ................................. 6-9
Specifications ............................................ 8-1
Starting the engine .................................... 5-1
Start switch................................................ 3-9
Steering, checking................................... 6-30
Storage...................................................... 7-3
Supporting the motorcycle ...................... 6-36
T
Tail/brake light ......................................... 6-34
Throttle cable free play, checking ........... 6-18
Throttle grip and cable, checking and
lubricating ............................................. 6-27
Tires ........................................................ 6-19
Tool kit....................................................... 6-1
Troubleshooting ...................................... 6-39
Troubleshooting charts............................ 6-41
Turn signal indicator light .......................... 3-2
Turn signal light bulb, replacing .............. 6-35
Turn signal switch ..................................... 3-9