2002 YAMAHA XVS250 maintenance

PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
62. Pull the rear of the panel out with
the key inserted in the lock, and
then slide the panel forward to re-
lease it in the front.To install the panel
1. Secure the front of the panel, and
then push the rear of the panel in
with the key inserted in the lock.
2. Turn the key counterclockwise to
the original position, remove it,
and then close the panel lock cov-
er.
EAU03185
Panel B
To remove the panel1. Remove the bolt.1. Bolt
E_5kr.book Page 6 Friday, December 14, 2001 11:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6 2. Pull the rear of the panel out, and
then slide the panel forward to re-
lease it in the front.To install the panel
1. Secure the front of the panel, and
then push the rear of the panel in.
2. Install the bolt.
E_5kr.book Page 7 Friday, December 14, 2001 11:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6
EAU03329
Checking the spark plugs The spark plugs are important engine
components, which are easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plugs should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
To remove a spark plug
1. Remove the spark plug cap.2. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owner’s tool kit.To check the spark plugs
1. Check that the porcelain insulator
around the center electrode on
each spark plug is a medium-to-
light tan (the ideal color when the
motorcycle is ridden normally).
2. Check that all spark plugs installed
in the engine have the same color.
NOTE:_ If any spark plug shows a distinctly dif-
ferent color, the engine could be defec-
tive. Do not attempt to diagnose such
problems yourself. Instead, have a
Yamaha dealer check the motorcycle. _3. Check each spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and replace
it if necessary.
1. Spark plug cap
1. Spark plug wrench
Specified spark plug:
CR6HSA (NGK) or
U20FSR-U (DENSO)
E_5kr.book Page 8 Friday, December 14, 2001 11:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6 To install a spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to
specification.
2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
NOTE:_ If a torque wrench is not available when
installing a spark plug, a good estimate
of 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. _4. Install the spark plug cap.
a. Spark plug gap
Spark plug gap:
0.6–0.7 mm
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf)
E_5kr.book Page 9 Friday, December 14, 2001 11:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6
EAU04433
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 motorcycle on a level
surface and hold it in an upright
position.NOTE:_ Make sure that the motorcycle is posi-
tioned 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.
NOTE:_ The engine oil should be between the
minimum and maximum level marks. _4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.To change the engine oil (with or
without oil filter element replace-
ment)
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place an oil pan under the engine
to collect the used oil.1. Engine oil level check window
2. Maximum level mark
3. Minimum level mark
4. Engine oil filler capRight side
E_5kr.book Page 10 Friday, December 14, 2001 11:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-11
6 3. Remove the engine oil filler cap
and drain bolt to drain the oil from
the crankcase.
NOTE:_ Skip steps 4–6 if the oil filter element is
not being replaced. _
4. Remove the oil filter element cover
by removing the bolts.5. Remove and replace the oil filter
element and O-ring.
6. Install the oil filter element cover
by installing the bolts, then tighten-
ing them to the specified torque.
NOTE:_ Make sure that the O-ring is properly
seated. _
1. Engine oil drain bolt
2. Oil panLeft side
1. Bolt (× 3)
1. Oil filter element
2. O-ringTightening torque:
Oil filter element cover bolt:
10 Nm (1.0 m·kgf)
E_5kr.book Page 11 Friday, December 14, 2001 11:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
67. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
8. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil filler
cap.
ECA00105
CAUTION:_

In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives with
the oil or use oils of grade “CD”
or higher. In addition, do not
use oils labeled “ENERGY CON-
SERVING II” or higher.


Make sure that no foreign mate-
rial enters the crankcase.
_9. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
10. Turn the engine off, and then
check the oil level and correct it if
necessary.
EAU04485*
Cleaning the air filter element The air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean the air filter element more fre-
quently if you are riding in unusually
wet or dusty areas.
1. Remove the air filter case by re-
moving the bolts, loosening the
clamp screw, then disconnecting
the hose. Tightening torque:
Engine oil drain bolt:
34 Nm (3.4 m·kgf)
Recommended engine oil:
See page 8-1.
Oil quantity:
With oil filter element
replacement:
1.6 L
Without oil filter element
replacement:
1.4 L
Total amount (dry engine):
1.75 L1. Bolt (× 2)
2. Clamp screw
3. Hose
E_5kr.book Page 12 Friday, December 14, 2001 11:33 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6 2. Remove the air filter case cover by
removing the screws.3. Remove the air filter element by
removing the screws.4. Lightly tap the air filter element to
remove most of the dust and dirt,
and then blow the remaining dirt
out with compressed air as shown.
If the air filter element is damaged,
replace it.
5. Install the air filter element by in-
serting it into the air filter case,
then installing the screws.
1. Air filter case cover
2. Screw (× 4)
1. Air filter element
2. Screw (× 3)
E_5kr.book Page 13 Friday, December 14, 2001 11:33 AM