2008 YAMAHA WR 250X check engine light

PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
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9Panel D
To remove the panel
1. Remove the seat. (See
page 3-12.)
2. Remove the bolt and washer, and
then remove the panel as shown.To install the panel
1. Place the panel in the original po-
sition, and then install the washer
and bolt.
2. Install the seat.

EAU19621
Checking the spark plug
The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode, it
should be removed and checked in ac-
cordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of the spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally). If
the spark plug shows a distinctly differ-
ent color, the engine could be operating
improperly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
Before installing a spark plug, the spark
1. Bolt
2. Washer
3. Panel D
3
2
1

Specified spark plug:
NGK/CR9EK

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
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67
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plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
NOTE:

If a torque wrench is not available when
installing a spark plug, a good estimateof the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.
EAU45140
Engine oil and oil filter
element
The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter ele-
ment replaced at the intervals specified
in the periodic maintenance and lubri-
cation chart.
To check the engine oil level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
NOTE:

Make sure that the vehicle is positioned
straight up when checking the oil level.
A slight tilt to the side can result in a
false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, and then check the oil level
through the check window located
at the bottom-right side of the
crankcase.
1. Spark plug gap
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Tightening torque:
Spark plug:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
11

PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
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10. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking, im-
mediately turn the engine off and
check for the cause.
11. Turn the engine off, and then
check the oil level and correct it if
necessary.
CAUTION:

ECA11230
After changing the engine oil, make
sure to check the oil pressure as de-
scribed below.

Remove the bleed bolt.

Start the engine and keep it
idling until oil flows out. If no oilcomes out after one minute,
turn the engine off immediately
so it will not seize. If this occurs,
have a Yamaha dealer repair the
vehicle.

After checking the oil pressure,
tighten the bleed bolt to the
specified torque.
EAU20070
Coolant
The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU20252
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
NOTE:


The coolant level must be checked
on a cold engine since the level
varies with engine temperature.

Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.
2. Check the coolant level in the cool-
ant reservoir.
NOTE:

The coolant should be between the
minimum and maximum level marks.
1. “CD” specification
2. “ENERGY CONSERVING II”
1
2

1. Bleed bolt
Tightening torque:
Bleed bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)1

INDEX
A
Air filter element and check hose,
cleaning ................................................ 6-15
Auxiliary light bulb, replacing .................. 6-36
B
Battery..................................................... 6-31
Brake and clutch levers, checking and
lubricating ............................................. 6-28
Brake and shift pedals, checking and
lubricating ............................................. 6-27
Brake fluid, changing .............................. 6-24
Brake fluid level, checking ...................... 6-23
Brake lever .............................................. 3-10
Brake lever free play, adjusting............... 6-22
Brake pedal ............................................. 3-10
C
Cables, checking and lubricating ............ 6-27
Care .......................................................... 7-1
Catalytic converter .................................. 3-12
Clutch lever ............................................... 3-9
Clutch lever free play, adjusting .............. 6-21
Coolant.................................................... 6-12
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................................. 6-17
Engine oil and oil filter element ................. 6-9
Engine stop switch .................................... 3-9
Engine trouble warning light...................... 3-3
EXUP system .......................................... 3-17
F
Front and rear brake pads, checking .......6-23
Front fork, adjusting .................................3-13
Front fork, bleeding ..................................3-15
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 ..........................................3-13
High beam indicator light ...........................3-2
Horn switch ................................................3-9
I
Identification numbers................................9-1
Ignition circuit cut-off system ...................3-18
Indicator and warning lights .......................3-2
K
Key identification number ..........................9-1
L
License plate light bulb, replacing ...........6-36
M
Main switch/steering lock ...........................3-1
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 .................6-6Parking ...................................................... 5-4
Part locations............................................. 2-1
Periodic maintenance and lubrication
chart ........................................................ 6-2
Pre-operation check list ............................. 4-2
R
Rear brake light switch, adjusting............ 6-22
Rear suspension, lubricating ................... 6-29
S
Safety information ..................................... 1-1
Seat ......................................................... 3-12
Shifting ...................................................... 5-2
Shift pedal ............................................... 3-10
Shock absorber assembly, adjusting....... 3-15
Sidestand ................................................ 3-18
Sidestand, checking and lubricating ........ 6-29
Spark plug, checking ................................. 6-8
Specifications ............................................ 8-1
Starting the engine .................................... 5-1
Start switch ................................................ 3-9
Steering, checking ................................... 6-30
Storage ...................................................... 7-3
Supporting the motorcycle....................... 6-37
T
Tail/brake light ......................................... 6-35
Throttle cable free play, checking............ 6-18
Throttle grip and cable, checking and
lubricating .............................................. 6-27
Tires ........................................................ 6-18
Tool kit ....................................................... 6-1
Troubleshooting....................................... 6-40
Troubleshooting charts ............................ 6-41
Turn signal indicator light .......................... 3-2
Turn signal light bulb, replacing............... 6-35