Page 81 of 132
PERIODIC MAINTENANCE AND MINOR REPAIR
7-8
7
EAU03634
Cowling B
To remove the cowling1. Remove cowling A.
2. Remove the screws, and then pull
the cowling off as shown.To install the cowling
1. Place the cowling in the original
position, and then install the
screws.NOTE:@ Make sure that the projection fits into
the grommet. @2. Install cowling A.
1. Cowling B
2. Screw (´ 2)
1. Screw
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Page 82 of 132
PERIODIC MAINTENANCE AND MINOR REPAIR
7-9
7
EAU00488
Panel A
To remove the panelRemove the screw, and then pull the
panel off as shown.To install the panel
Place the panel in the original position,
and then install the screw.
EAU00488
Panel B
To remove the panelRemove the screw, and then pull the
panel off as shown.
1. Panel A
2. Screw
1. Panel B
2. Screw
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PERIODIC MAINTENANCE AND MINOR REPAIR
7-10
7 To install the panel
Place the panel in the original position,
and then install the screw.
EAU01795
Panel C
To remove the panel1. Remove the left passenger foot-
rest by removing the bolts.
2. Remove the screw, and then pull
the panel off as shown.To install the panel
1. Place the panel in the original po-
sition, and then install the screw.
2. Install the passenger footrest by
installing the bolts.
1. Panel C
2. Screw
3. Bolt (´ 2)
E_5jc.book Page 10 Monday, January 22, 2001 12:12 PM
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PERIODIC MAINTENANCE AND MINOR REPAIR
7-11
7
EAU01880
Checking the spark plugs The spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they 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.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal col-
or when the motorcycle is ridden nor-
mally), and all spark plugs installed in
the engine should have the same color.
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.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.Before installing a spark plug, the spark
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 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. @
a. Spark plug gap
Specified spark plug:
DPR8EA-9 (NGK) or
X24EPR-U9 (DENSO)
Spark plug gap:
0.8–0.9 mm
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf)
E_5jc.book Page 11 Monday, January 22, 2001 12:12 PM
Page 85 of 132

PERIODIC MAINTENANCE AND MINOR REPAIR
7-12
7
EAU01703
Engine oil and oil filter
cartridge The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter car-
tridge replaced at the intervals speci-
fied in the periodic maintenance and
lubrication 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 cartridge 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
1. Engine oil filler cap
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Page 86 of 132
PERIODIC MAINTENANCE AND MINOR REPAIR
7-13
73. 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 cartridge is
not being replaced. @
4. Remove the oil filter cartridge with
an oil filter wrench.NOTE:@ An oil filter wrench is available at a
Yamaha dealer. @5. Apply a thin coat of engine oil to
the O-ring of the new oil filter
cartridge.NOTE:@ Make sure that the O-ring is properly
seated. @
6. Install the new oil filter cartridge,
and then tighten it to the specified
torque with a torque wrench.
7. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
1. Engine oil drain bolt
1. Engine oil filter cartridge
1. Torque wrench
2. Oil filter wrench
Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf)
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf)
E_5jc.book Page 13 Monday, January 22, 2001 12:12 PM
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PERIODIC MAINTENANCE AND MINOR REPAIR
7-14
7 8. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil filler
cap.
EC000072
CAUTION:@ l
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 a higher
grade than “CD”. In addition, do
not use oils labeled “ENERGY
CONSERVING II” or higher.
l
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.NOTE:@ After the engine is started, the engine
oil level warning light should go off if the
oil level is sufficient. @
EC000067
CAUTION:@ If the oil level warning light flickers
or remains on, immediately turn the
engine off and have a Yamaha deal-
er check the vehicle. @10. Turn the engine off, and then
check the oil level and correct it if
necessary. Recommended engine oil:
See page 9-1.
Oil quantity:
Without oil filter cartridge
replacement:
3.5 L
With oil filter cartridge
replacement:
3.7 L
Total amount (dry engine):
4.3 L
E_5jc.book Page 14 Monday, January 22, 2001 12:12 PM
Page 88 of 132

PERIODIC MAINTENANCE AND MINOR REPAIR
7-15
7
EAU01220
Final gear oil The final gear case must be checked
for oil leakage before each ride. If any
leakage is found, have a Yamaha deal-
er check and repair the motorcycle. In
addition, have a Yamaha dealer
change the final gear oil at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU03974
Checking the coolant level The coolant level should be checked as
follows before each ride. In addition,
the coolant must be changed at the in-
tervals specified in the periodic mainte-
nance and lubrication chart.
1. Place the motorcycle on a level
surface and hold it in an upright
position.
2. Remove panel A. (See page 7-9
for panel removal and installation
procedures.)NOTE:_ l
The coolant level must be checked
on a cold engine since the level
varies with engine temperature.
l
Make sure that the motorcycle is
positioned straight up when
checking the coolant level. A slight
tilt to the side can result in a false
reading.
_
3. Check the coolant level in the
coolant reservoir.NOTE:_ The coolant should be between the
minimum and maximum level marks. _
1. Final gear oil filler bolt
2. Final gear oil drain bolt
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
E_5jc.book Page 15 Monday, January 22, 2001 12:12 PM