PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6 2. Clean the surface of the spark plug
gasket and its mating surface, 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.
EAU19692
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 the center-
stand.NOTE:
Make sure that the vehicle is positioned
straight up when checking the oil level.
A slight tilt to the side can result in afalse 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 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 element replace-
ment)
1. Start the engine, warm it up for
several minutes, and then turn it
off.
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf, 12.7 ft·lbf)
1. Engine oil filler cap
2. Engine oil level check window
3. Maximum level mark
4. Minimum level mark
U5WME3E0.book Page 8 Thursday, August 4, 2005 8:48 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6 10. Install the panel.
11. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
12. Add the specified amount of the
recommended engine oil, and then
install and tighten the oil filler cap.
CAUTION:
ECA11620
In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do notmix 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.
13. 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.
NOTE:After the engine is started, the engine
oil level warning light should go off if theoil level is sufficient.CAUTION:
ECA10400
If the oil level warning light flickers
or remains on, immediately turn the
engine off and have a Yamaha dealercheck the vehicle.
14. Turn the engine off, and then
check the oil level and correct it if
necessary.
EAU20610
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 seat. (See page
3-14.)
2. Remove panel A. (See page 6-5.)
3. Remove the air filter case cover by
removing the screws.
4. Pull the air filter element out.
Tightening torque:
Oil filter element drain screw:
7.0 Nm (0.7 m·kgf, 5 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 element replace-
ment:
3.00 L (3.17 US qt) (2.64 Imp.qt)
With oil filter element replacement:
3.35 L (3.54 US qt) (2.95 Imp.qt)
1. Air filter case cover
2. Screw
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-11
65. 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.
6. Insert the air filter element into the
air filter case.
CAUTION:
ECA10480
Make sure that the air filter ele-
ment is properly seated in the
air filter case.
The engine should never be op-
erated without the air filter ele-
ment installed, otherwise the
piston(s) and/or cylinder(s) maybecome excessively worn.
7. Install the air filter case cover by in-
stalling the screws.
8. Install the panel and the seat.
EAU21290
Adjusting the carburetors The carburetors are important parts of
the engine and require very sophisticat-
ed adjustment. Therefore, most carbu-
retor adjustments should be left to a
Yamaha dealer, who has the neces-
sary professional knowledge and expe-
rience. The adjustment described in the
following section, however, may be ser-
viced by the owner as part of routine
maintenance.CAUTION:
ECA10560
The carburetors have been set and
extensively tested at the Yamaha
factory. Changing these settings
without sufficient technical knowl-
edge may result in poor perfor-mance of or damage to the engine.
1. Air filter elementU5WME3E0.book Page 11 Thursday, August 4, 2005 8:48 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6
EAU21960
Cast wheels To maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.
The wheel rims should be checked
for cracks, bends or warpage be-
fore each ride. If any damage is
found, have a Yamaha dealer re-
place the wheel. Do not attempt
even the smallest repair to the
wheel. A deformed or cracked
wheel must be replaced.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
Ride at moderate speeds after
changing a tire since the tire sur-
face must first be “broken in” for it
to develop its optimal characteris-
tics.
EAU22072
Clutch lever Since this model is equipped with a hy-
draulic clutch, adjusting the clutch lever
free play is not needed. However, it is
necessary to check the clutch fluid level
and check the hydraulic system for
leakage before each ride. If the clutch
lever free play does become excessive,
and shifting becomes rough or clutch
slippage occurs, causing poor acceler-
ation, there may be air in the clutch sys-
tem. If there is air in the hydraulic
system, have a Yamaha dealer bleed
the system before operating the motor-
cycle.
EAU22291
Adjusting the rear brake light
switch The rear brake light switch, which is ac-
tivated by the brake pedal, is properly
adjusted when the brake light comes
on just before braking takes effect. If
necessary, adjust the brake light switch
as follows.
1. Remove panel A. (See page 6-5.)
2. Turn the adjusting nut while hold-
ing the rear brake light switch in
place. To make the brake light
come on earlier, turn the adjusting
nut in direction (a). To make the
brake light come on later, turn the
adjusting nut in direction (b).1. Rear brake light switch
2. Rear brake light switch adjusting nut
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6battery tends to discharge more quickly
if the vehicle is equipped with optional
electrical accessories.
To store the battery
1. If the vehicle will not be used for
more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
2. If the battery will be stored for more
than two months, check it at least
once a month and fully charge it if
necessary.
3. Fully charge the battery before in-
stallation.
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals.
CAUTION:
ECA10630
Always keep the battery
charged. Storing a discharged
battery can cause permanent
battery damage.
To charge a sealed-type (MF)
battery, a special (constant-volt-
age) battery charger is required.
Using a conventional battery
charger will damage the battery.If you do not have access to a
sealed-type (MF) battery charg-
er, have a Yamaha dealer
charge your battery.
EAU33581
Replacing the fuses The fuse box, which contains the fuses
for the individual circuits, is located un-
der the seat. (See page 3-14.)
The parking lighting fuse is located be-
hind panel B. (See page 6-5.)1. Backup fuse (for odometer, clock and immo-
bilizer system)
2. Ignition fuse
3. Headlight fuse
4. Signaling system fuse
5. Main fuse
6. Spare fuse
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-28
6 If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.
CAUTION:
ECA10640
Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly afire.
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAU23792
Replacing the headlight bulb This model is equipped with a quartz
bulb headlight. If the headlight bulb
burns out, replace it as follows.
1. Remove the headlight unit by re-
moving the screws.
2. Disconnect the headlight coupler,
and then remove the bulb cover.
1. Parking lighting fuseSpecified fuses:
Main fuse:
40.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
15.0 A
Backup fuse:
10.0 A
Parking lighting fuse:
10.0 A
1. Screw
U5WME3E0.book Page 28 Thursday, August 4, 2005 8:48 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-29
63. Unhook the headlight bulb holder,
and then remove the defective
bulb.
WARNING
EWA10790
Headlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooleddown.
4. Place a new headlight bulb into po-
sition, and then secure it with the
bulb holder.CAUTION:
ECA10660
Do not touch the glass part of the
headlight bulb to keep it free from
oil, otherwise the transparency of
the glass, the luminosity of the bulb,
and the bulb life will be adversely af-
fected. Thoroughly clean off any dirt
and fingerprints on the headlight
bulb using a cloth moistened with al-cohol or thinner.5. Install the headlight bulb cover,
and then connect the coupler.
6. Install the headlight unit by install-
ing the screws.
7. Have a Yamaha dealer adjust the
headlight beam if necessary.
1. Headlight coupler
2. Bulb cover
1. Headlight bulb holder
1. Do not touch the glass part of the bulb.
U5WME3E0.book Page 29 Thursday, August 4, 2005 8:48 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
6
EAU24170
Replacing a tail/brake light
bulb 1. Remove the seat. (See page
3-14.)
2. Remove the socket (together with
the bulb) by turning it counter-
clockwise.
3. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.
4. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
5. Install the socket (together with the
bulb) by turning it clockwise.
6. Install the seat.
EAU24202
Replacing a turn signal light
bulb 1. Remove the turn signal light lens
by removing the screw.
2. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screw.
CAUTION:
ECA11190
Do not overtighten the screw, other-wise the lens may break.
1. Tail/brake light bulb socket
1. Screw
1. Turn signal light bulb
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