PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6
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.
5. Place the spark plug cover in the
original position.
EAU19822
Engine oil 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 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-left side of the crank-
case.
NOTE:The engine oil should be between theminimum and maximum level marks.
4. If the engine oil is at or below the
minimum level mark, add sufficient
oil of the recommended type to
raise it to the correct level.
To change the engine oil
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
U5YSE0E0.book Page 7 Tuesday, June 8, 2004 2:04 PM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6 3. Remove the engine oil filler cap
and drain bolt to drain the oil from
the crankcase.
4. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
NOTE:Check the washer for damage and re-place it if necessary.
5. 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 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.
6. 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.
7. Turn the engine off, and then
check the oil level and correct it if
necessary.NOTE:Have a Yamaha dealer replace the oil
filter element at the intervals specified
in the periodic maintenance and lubri-cation chart.
1. Engine oil filler cap
1. Engine oil drain bolt
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf, 31 ft·lbf)
Recommended engine oil:
See page 8-1.
Oil change quantity:
3.00 L (3.17 US qt) (2.64 Imp.qt)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6
EAU20022
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 level must be
checked and the oil changed as follows
at the intervals specified in the periodic
maintenance and lubrication 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 a level sur-
face and hold it in an upright posi-
tion.
NOTE:
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 oil filler bolt, and then
check the oil level in the final gear
case.
NOTE:The 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.
To change the final gear oil
1. Place an oil pan under the final
gear case to collect the used oil.2. Remove the oil filler bolt and drain
bolt to drain the oil from the final
gear case.
3. Install the final gear oil drain bolt,
and then tighten it to the specified
torque.
4. Add the recommended final gear
oil to the brim of the filler hole.
NOTE:GL4 is a quality rating. Hypoid gear oilsrated GL5 or GL6 may also be used.
5. Install the oil filler bolt, and then
tighten it to the specified torque.
1. Final gear oil drain bolt
2. Final gear oil filler bolt
3. Correct oil level
Tightening torque:
Final gear oil drain bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
Recommended final gear oil:
SAE80 API GL-4 Hypoid gear oil
Oil quantity:
0.19 L (0.20 US qt) (0.17 Imp.qt)
Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6 6. Check the final gear case for oil
leakage. If oil is leaking, check for
the cause.
EAU20670
Cleaning the air filter element The air filter element should be cleaned
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart. Clean the air filter element
more frequently if you are riding in un-
usually wet or dusty areas.
1. Remove the air filter case cover by
removing the screws.
2. Pull the air filter element out.
3. 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.4. Insert the air filter element into the
air filter case as shown.1. Air filter case cover
2. Screw
1. Air filter element
2. Projection
3. Slot
U5YSE0E0.book Page 10 Tuesday, June 8, 2004 2:04 PM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-17
6
EAU22270
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.
Turn the adjusting nut while holding 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).
EAU22321
Checking the front and rear
brake pads Front brake
Rear brakeThe front and rear brake pads must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart. Each brake pad is
provided with a wear indicator groove,
which allows you to check the brake
pad wear without having to disassem-
ble the brake. To check the brake pad
wear, check the wear indicator
grooves. If a brake pad has worn to the
point that the wear indicator groove has
almost disappeared, have a Yamaha
dealer replace the brake pads as a set.
1. Rear brake light switch
2. Rear brake light switch adjusting nut
1. Brake pad wear indicator groove
1. Brake pad wear indicator groove
U5YSE0E0.book Page 17 Tuesday, June 8, 2004 2:04 PM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
6
KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OFCHILDREN.
To charge the battery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that the
battery 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 dealercharge your battery.
EAU27102
Replacing the fuses The main fuse is located under the igni-
tor unit panel.
The fuse box, which contains the fuses
for the individual circuits, is located in-
side the storage compartment. (See
page 3-13.)
If a fuse is blown, replace it as follows.1. Fuse box
2. Headlight fuse
3. Signaling system fuse
4. Ignition fuse
5. Carburetor heater fuse
6. Ignitor unit fuse
7. Backup fuse (for odometer and immobilizer
system)
8. Spare fuse
9. Parking lighting fuse
U5YSE0E0.book Page 24 Tuesday, June 8, 2004 2:04 PM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
NOTE:Include steps 1–3 and 8–9 only for themain fuse.
1. Remove the rider seat. (See page
3-12.)
2. Remove the quick fasteners
shown by pushing the center in
with a screwdriver, then pulling the
fastener out.
3. Pull the ignitor unit panel outward
to the right.4. Turn the key to “OFF” and turn off
the electrical circuit in question.
5. 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.
6. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
7. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
1. Quick fastener
1. Ignitor unit panel
2. Spare main fuse
3. Main fuse
Specified fuses:
Main fuse:
30.0 A
Backup fuse:
10.0 A
Ignition fuse:
10.0 A
Headlight fuse:
15.0 A
Carburetor heater fuse:
15.0 A
Signaling system fuse:
10.0 A
Ignitor unit fuse:
5.0 A
Parking lighting fuse:
10.0 A
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-26
6 8. Place the ignitor unit panel in the
original position and install the
quick fasteners.
NOTE:To install a quick fastener, push its pin
back so that it will protrude from the fas-
tener head, then insert the fastener and
push the protruding pin in until it is flushwith the fastener head.
9. Install the rider seat.
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.
3. 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-
1. Quick fastener (after removal)
2. Quick fastener (before installation)
1. Screw
1. Headlight bulb holder
U5YSE0E0.book Page 26 Tuesday, June 8, 2004 2:04 PM