PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
6
EAU19653
Checking the spark plugsThe spark plugs are important engine
components, which should be
checked periodically, preferably by a
Yamaha dealer. Since heat and depos-
its will cause any spark plug to slowly
erode, they should be removed and
checked in accordance with the peri-
odic maintenance and lubrication
chart. In addition, the condition of the
spark plugs can reveal the condition of
the engine.
The porcelain insulator around the
center 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 engine should have the same
color. If any spark plug shows a dis-
tinctly different color, the engine could
be operating improperly. Do not at-
tempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of elec-
trode 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.
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
specified torque as soon as possible.NOTICE
ECA10841
Do not use any tools to remove or in-
stall the spark plug cap, otherwise
the ignition coil coupler may get
damaged. The spark plug cap may
be difficult to remove because the
rubber seal on the end of the cap fits
tightly. To remove the spark plug
cap, simply twist it back and forth
while pulling it out; to install it, twist
it back and forth while pushing it in.
Specified spark plug:
NGK/CPR8EA-9
1. Spark plug gap
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-12
6
EAU19887
Engine oil and oil filter car-
tridgeThe 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 locat-
ed at the bottom-left side of the
crankcase.TIPThe 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. 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.4. Remove the engine oil filler cap,
the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
TIPSkip steps 5…7 if the oil filter cartridge
is not being replaced.5. Remove the oil filter cartridge with
an oil filter wrench.
1. Engine oil level check window
2. Engine oil filler cap
3. Maximum level mark
4. Minimum level mark
31
4
2
1. Engine oil drain bolt
2. Gasket
12
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
6
NOTICE
ECA11621
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,
immediately turn the engine off
and check for the cause.TIPAfter the engine is started, the engine
oil level warning light should go off if
the oil level is sufficient.
NOTICE
ECA10402
If the oil level warning light flickers
or remains on even if the oil level is
correct, immediately turn the engine
off and have a Yamaha dealer check
the vehicle.11. Turn the engine off, and then
check the oil level and correct it if
necessary.
EAU20017
Final gear oilThe 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 ad-
dition, the final gear oil level must be
checked and the oil changed as fol-
lows at the intervals specified in the
periodic maintenance and lubrication
chart.
WARNING
EWA10371
Make sure that no foreign mate-
rial enters the final gear case.
Make sure that no oil gets on
the tire or wheel.To check the final gear oil level
1. Place the vehicle on the center-
stand.TIPMake sure that the vehicle is posi-
tioned straight up when checking the
oil level. A slight tilt to the side can re-
sult in a false reading.
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
6
EAU20071
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU54161
To check the coolant level
1. Place the vehicle on the center-
stand.TIPThe coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.2. Remove the left cowling vent pan-
el. (See page 3-40.)
3. Check the coolant level in the
coolant reservoir.TIPThe coolant should be between the
minimum and maximum level marks.
4. If the coolant is at or below the
minimum level mark, remove the
coolant reservoir cap.
5. Add coolant or distilled water to
raise the coolant to the maximum
level mark, and install the coolantreservoir cap. WARNING! Re-
move only the coolant reservoir
cap. Never attempt to remove
the radiator cap when the en-
gine is hot.
[EWA15162]
NOTICE: If
coolant is not available, use dis-
tilled water or soft tap water in-
stead. Do not use hard water or
salt water since it is harmful to
the engine. If water has been
used instead of coolant, replace
it with coolant as soon as possi-
ble, otherwise the cooling sys-
tem will not be protected
against frost and corrosion. If
water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possible,
otherwise the effectiveness of
the coolant will be reduced.
[ECA10473]
6. Install the panel.
1. Maximum level mark
2. Minimum level mark
1. Coolant reservoir cap
1
21
Coolant reservoir capacity (up to
the maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-22
6braking performance, which may re-
sult in loss of control and an acci-
dent.
EAU22283
Brake light switchesThe brake light, which is activated by
the brake pedal and brake lever,
should come on just before braking
takes effect. Since the brake light
switches are components of the cruise
control system, they must be adjusted
by a Yamaha dealer, who has the nec-
essary professional knowledge and ex-
perience.
EAU22393
Checking the front and rear
brake padsThe front and rear brake pads must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
EAU43432
Front brake pads
The front brake calipers are equipped
with two sets of brake pads.
Each front brake pad is provided with a
wear indicator groove, which allows
you to check the brake pad wear with-
out having to disassemble the brake.
To check a brake pad for wear, check
its wear indicator groove. If a brake
pad has worn to the point that the wear1. Brake pad wear indicator groove
1
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
6
EAU54513
Replacing the fusesThe fuse boxes and individual fuses
are located under panel A. (See page
6-8.)
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. WARNING! Do not
use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15132]
1. Main fuse 1
2. Spare fuse
3. Cruise control fuse
4. Brake light fuse
5. Fuse box
6. Main fuse 2
5
1
3 4
2
5
26
1. ABS motor fuse
2. ABS solenoid fuse
3. Fuel injection system fuse
4. Backup fuse (for clock and immobilizer sys-
tem)
5. Electronic throttle valve fuse
6. Headlight fuse
7. Spare fuse
8. YCC-S motor control fuse
9. Suspension fuse
10.Signaling system fuse
11.Auxiliary DC jack fuse
12.ABS control unit fuse
13.Ignition fuse
14.Right radiator fan motor fuse
15.Left radiator fan motor fuse
16.Hazard fuse
17.Windshield motor fuse
15
7
11
101213
14
7
17
16
8
1
9
2
3456
7
7
Specified fuses:
Main fuse 1:
50.0 A
Main fuse 2:
30.0 A
Headlight fuse:
25.0 A
Brake light fuse:
1.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
20.0 A
Radiator fan motor fuse:
10.0 A × 2
Backup fuse:
7.5 A
Hazard fuse:
7.5 A
Fuel injection system fuse:
15.0 A
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
6
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.
EAU40362
Headlight bulbIf a headlight does not come on, have
a Yamaha dealer check its electrical
circuit or replace the bulb.NOTICE
ECA16581
Do not affix any type of tinted film or
stickers to the headlight lens.
EAU54501
Auxiliary lightThis model is equipped with LED-type
auxiliary lights.
If an auxiliary light does not come on,
have a Yamaha dealer check it.
ABS control unit fuse:
7.5 A
ABS motor fuse:
30.0 A
ABS solenoid fuse:
20.0 A
Suspension fuse:
15.0 A
YCC-S motor control fuse:
30.0 A
Cruise control fuse:
1.0 A
Auxiliary DC jack fuse:
3.0 A
Windshield motor fuse:
20.0 A
Electronic throttle valve fuse:
7.5 A
1. Auxiliary light
1
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6
EAU54241
Front turn signal lightThis model is equipped with LED-type
front turn signal lights.
If a front turn signal light does not
come on, have a Yamaha dealer check
it.
EAU27005
Replacing a rear turn signal
light bulb or a tail/brake light
bulb1. Remove the passenger seat. (See
page 3-35.)
2. Remove the turn signal light bulb
socket (together with the bulb) or
the tail/brake light bulb socket (to-
gether with the bulb) by turning it
counterclockwise.
3. Remove the burnt-out bulb by
pushing it in and turning it coun-
terclockwise.
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 passenger seat.1. Turn signal light bulb socket
2. Tail/brake light bulb socket
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