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The porcelain insulator around the center
electrode of each spark plug should be a me-
dium-to-light tan color (the ideal color when
the vehicle is ridden normally), and all spark
plugs installed in the engine should have a
similar color. If any spark plug shows a dis-
tinctly different color, the engine could be op-
erating improperly. Do not attempt to
diagnose such problems yourself. Instead,
have a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode ero-
sion 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 thick-
ness 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.Specified spark plug:
NGK/CR9EB
1. Spark plug gapSpark plug gap:0.7–0.8 mm (0.028–0.031 in)
Tightening torque: Spark plug:13 N·m (1.3 kgf·m, 9.4 lb·ft)
1
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8
2. Remove the tailpipe bolts.
3. Remove the tailpipe by pulling it out ofthe muffler, and then remove the gasket.
4. Tap the tailpipe lightly, and then use a wire brush to remove any carbon depos-
its from the spark arrester portion of the
tailpipe and inside of the tailpipe housing. 5. Install the gasket, and then insert the tail-
pipe into the muffler and align the bolt
holes.
6. Install the tailpipe bolts and tighten them
to the specified torque.
7. Install the tailpipe cover.1. Tailpipe bolt
1
1
1. Gasket
2. Spark arrester
3. TailpipeTightening torque:
Tailpipe bolt:10 N·m (1.0 kgf·m, 7.2 lb·ft)
2
1
3
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8
7. Turn the adjusting nut in direction (a) toincrease the free play or in direction (b) to
decrease the free play.
8. Tighten the locknut, and then slide the
rubber cover to its original position.
9. Install the panel.
EBU36620Brake light switchThe brake light, which is activated by the
brake pedal, should come on just before
braking takes effect. Since the brake light
switch is a component of the YCC-S system,
it must be adjusted by a Yamaha dealer, who
has the necessary professional knowledge
and experience.EBU35930Cable inspection and lubrication
WARNING
EWB03380Damaged cables could restrict operation,
which may cause an accident or injury. In-
spect control cables frequently and re-
place damaged cables. Corrosion can
result when the outer covering of control
cables becomes damaged. Cables can
also become frayed or kinked.
1. Rubber cover
2. Adjusting nut
3. Locknut
1
(b)
(a)
3
2
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EBU35252Fuse replacementThe main fuse, the fuel injection system fuse,
the EPS fuse, and the fuse box are located
under panel A. (See page 8-10.)If a fuse is blown, replace it as follows.1. Turn the key to “ ” (off) and turn off the electrical circuit in question.1. Main fuse
2. EPS fuse
3. Fuse box
4. Fuel injection system fuse
5. Fuel injection system spare fuse
12
3
4
5
1. Headlight fuse “HEAD”
2. Signaling system fuse “SIGNAL”
3. Four-wheel-drive motor fuse “DIFF”
4. Backup fuse “BACK UP” (for clock)
5. Ignition fuse “IGNITION”
6. Radiator fan motor fuse “FAN”
7. Spare fuse
8. Accessory fuse “ACC”
9. YCC-S motor control fuse “MOTOR”
10.Auxiliary DC jack fuse “TERMINAL”
1 234
5
6
7
8
9
10
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NOTICEECB00641To prevent accidental short-circuiting,
turn off the main switch when checking or
replacing a fuse. 2. Remove panel A. (See page 8-10.)
3. Remove the blown fuse, and then install anew fuse of the specified amperage.
WARNING! Always use a fuse of the specified amperage. Never use any
material in place of the proper fuse.
Using an improper fuse can cause
damage to the electrical system and
may lead to a fire.
[EWB03440]
Specified fuses: Main fuse:50.0 A
Fuel injection system fuse: 15.0 A
Headlight fuse: 15.0 A
Ignition fuse: 15.0 A
Auxiliary DC jack fuse: 10.0 A
Signaling system fuse: 10.0 A
Four-wheel-drive motor fuse: 10.0 A
Radiator fan motor fuse: 30.0 A
Backup fuse: 10.0 A
EPS fuse: 40.0 A
Accessory fuse: 10.0 A
YCC-S motor control fuse: 30.0 A
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4. Turn the key to “ ” (on) and turn on theelectrical circuit in question to check if
the device operates. If the fuse blows
again immediately, have a Yamaha dealer
check the electrical system.
5. Install the panel.EBU35261HeadlightsThis model is equipped with LED headlights.
There are no user replaceable bulbs. If one or
more headlights do not come on, check for a
loose connection, check the headlight fuse,
and then have a Yamaha dealer check the ve-
hicle.TIP When the headlights are set to low beam,
only the top half of each lamp will illuminate.
When the headlights are set to high beam,
both halves of each lamp will illuminate.
EBU32681Headlight beam adjustmentNOTICEECB00691It is advisable to have a Yamaha dealer
make this adjustment. To raise the beam, tu rn the headlight beam
adjusting screw in direction (a).
To lower the beam, turn the headlight beam
adjusting screw in direction (b).1. Headlight beam adjusting screw
(a)
(b)
1
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EBU35271Tail/brake lightThis model is equipped with an LED tail/brake
light, there are no replaceable bulbs.
If the tail/brake light does not come on, check
the fuses, and then have a Yamaha dealer
check the vehicle.EBU32700TroubleshootingAlthough Yamaha vehicles receive an inspec-
tion before shipment from the factory, trouble
may occur during operation. Any problem inthe fuel, compression, or ignition systems can
cause poor starting and loss of power. The
troubleshooting chart describes a quick, easy
procedure for making checks. If your vehicle
requires any repair, take it to a Yamaha deal-
er.
The skilled technicians at a Yamaha dealer-
ship have the tools, experience, and know-
how to properly service your vehicle. Use only
genuine Yamaha parts on your vehicle. Imita-
tion parts may look like Yamaha parts, but
they are often inferior. Consequently, they
have a shorter service life and can lead to ex-
pensive repair bills.
WARNING
EWB03450When checking the fuel system, do not
smoke and make sure there are no open
flames or sparks in the area, including pilot
lights from water heaters or furnaces.
1. Headlight beam adjusting screw
(b)
(a)
1
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6. If storing in a humid or salt-air atmo-sphere, coat all exposed metal surfaces
with a light film of oil. Do not apply oil to
any rubber parts or the seat covers.
7. Remove the battery and charge it. Store
it in a dry place and recharge it once a
month. Do not store the battery in an ex-
cessively warm or cold place [less than 0
°C (30 °F) or more than 30 °C (90 °F)].
Use of fuel stabilizer eliminates the need to
drain the fuel system. Consult a Yamaha
dealer if the fuel system needs to be drained.UB577AE0.book Page 3 Wednesday, June 8, 2016 9:35 AM