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PERIODIC MAINTENANCE AND ADJUSTMENT
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6
EAU18771
Removing and installing pan-
els The panels shown need to be removed
to perform some of the maintenance
jobs described in this chapter. Refer to
this section each time a panel needs to
be removed and installed.
EAU39550
Panel A
To remove the panelRemove the bolts and the quick fasten-
er, and then take the panel off.To install the panel
Place the panel in the original position,
and then install the bolts and the quick
fastener.
EAU47050
Panels B and C
To remove one of the panels1. Remove the seats. (See page
3-23.)
2. Remove the bolts and the quick
fastener screws.
1. Panel A
1. Panel B
1. Panel C
1. Panel A
2. Bolt
3. Quick fastener
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
63. Pull the bottom of the panel out-
ward, pull the front of the panel
downward, and then slide the pan-
el forward to release it in the rear
as shown.
1. Panel B
2. Bolt
3. Quick fastener screw
1. Panel C
2. Bolt
3. Quick fastener screw
1. Panel B
1. Panel B
1
1
1. Panel B
1. Panel C
11
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6
To install the panel
1. Insert the rear of the panel into the
rear cowling as shown, and then
insert the top edge of the panel into
the fuel tank side cover.2. Push the bottom of the panel in as
shown.1. Panel C
1. Panel C
1
1
1. Panel B
2. Rear cowling
1. Panel B
2. Fuel tank side cover
1
2
1
2
1. Panel B
1. Panel C
2. Rear cowling
1
1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6
3. Install the bolts and the quick fas-
tener screws.
4. Install the seats.
EAU19642
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 color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be operating im-
properly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
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.
1. Panel C
2. Fuel tank side cover
1. Panel C
1
21
Specified spark plug:
NGK/CR8E
DENSO/U24ESR-N1. Spark plug gapSpark plug gap:
0.7–0.8 mm (0.028–0.031 in)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
6
TIPIf 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.
EAU19885
Engine oil and oil filter car-
tridge 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 vehicle on the center-
stand. 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-left side of the crank-
case.TIPThe engine oil should be between theminimum 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. Place the vehicle on a level sur-
face.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Place an oil pan under the engine
to collect the used oil.
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
1. Engine oil level check window
2. Maximum level mark
3. Minimum level mark
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-12
64. Remove the engine oil filler cap
and drain bolt to drain the oil from
the crankcase.
TIPSkip steps 5–7 if the oil filter cartridge isnot being replaced.
5. Remove the oil filter cartridge with
an oil filter wrench.
TIPAn oil filter wrench is available at aYamaha dealer.
6. Apply a thin coat of clean engine
oil to the O-ring of the new oil filter
cartridge.
TIPMake sure that the O-ring is properlyseated.
7. Install the new oil filter cartridge,
and then tighten it to the specified
torque with a torque wrench.
1. Engine oil filler cap
2. Oil filter cartridge
3. Engine oil drain bolt
1. Oil filter cartridge
2. Oil filter wrench
1. O-ring
1. Oil filter cartridge
2. Torque wrench
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Page 71 of 108
PERIODIC MAINTENANCE AND ADJUSTMENT
6-13
6 8. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
TIPCheck the washer for damage and re-place it if necessary.
9. Refill with the specified amount of
the recommended engine oil, and
then install and tighten the oil filler
cap.
TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-tem have cooled down.NOTICE
ECA11620
In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a high-
er quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
Make sure that no foreign mate-rial enters the crankcase.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.
TIPAfter the engine is started, the engine
oil level warning light should go off if theoil level is sufficient.NOTICE
ECA10400
If the oil level warning light flickers
or remains on, immediately turn the
engine off and have a Yamaha dealercheck the vehicle.
Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf, 12 ft·lbf)
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf, 31 ft·lbf)
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter cartridge replace-
ment:
3.80 L (4.02 US qt, 3.34 Imp.qt)
With oil filter cartridge replacement:
4.00 L (4.23 US qt, 3.52 Imp.qt)
1.“CD” specification
2.“ENERGY CONSERVING II”
1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
611. Turn the engine off, and then
check the oil level and correct it if
necessary.
EAU20014
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 vehicle. In addi-
tion, the final gear oil must be changed
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart.
WARNING
EWA10370
Make sure that no foreign mate-
rial enters the final gear case.
Make sure that no oil gets on thetire or wheel.
To check the final gear oil level
1. Place the vehicle on the center-
stand.
TIP
The final gear oil level must be
checked on a cold engine.
Make sure that the vehicle is posi-
tioned straight up when checking
the oil level. A slight tilt to the sidecan result in a false reading.2. Remove the final gear oil filler bolt,
and then check the oil level in the
final gear case.
TIPThe oil level should be at the brim of thefiller hole.
3. If the oil is below the brim of the fill-
er hole, add sufficient oil of the rec-
ommended type to raise it to the
correct level.
4. Install the oil filler bolt, and then
tighten it to the specified torque.1. Final gear oil filler bolt
2. Final gear oil drain bolt
3. Correct oil level
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