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7. Remove the oil filter cartridge with an oilfilter wrench. Make sure that the O-ring is
removed together with the oil filter car-
tridge. If the O-ring remains attached to
the crankcase, oil leakage may occur.TIPAn oil filter wrench is available from a Yamaha
dealer.1. Oil filter cartridge 2. Oil filter wrench8. Apply a light coat of clean engine oil tothe O-ring of the new oil filter cartridge.
TIPMake sure that the O-ring is properly seated.1. O-ring9. Install the new oil filter cartridge with an oil filter wrench, and then tighten it to the
specified torque with a torque wrench.
1
2
Tightening torque: Oil filter cartridge: 17 Nm (1.7 m·kgf, 12 ft·lbf)
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1. Spark plug wrench
Inspection
The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate the condition of
the engine.
The ideal color of the porcelain insulator
around the center electrode is a medium-to-
light tan for a vehicle that is being ridden nor-
mally.
You should periodically remove and inspect
the spark plug because heat and deposits will
cause the spark plug to slowly break down
and erode. If electrode erosion becomes ex-
cessive, or if carbon and other deposits are
excessive, you should replace the spark plug
with the specified plug.
1
Specified spark plug:
CPR7EA-9 (NGK)
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2. Remove the tailpipe by pulling it out ofthe muffler, and then remove the gasket.
3. 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.1. Tailpipe 2. Spark arrester 3. Gasket4. Install the gasket, and then insert thetailpipe into the muffler and align the bolt
holes.
5. Install the bolts and tighten them to the specified torque. Valve clearance
The correct valve clearance changes with
use, resulting in improper fuel/air supply or
engine noise. To prevent this, the valve clear-
ance must be adjusted regularly. This adjust-
ment however, should be left to a professional
Yamaha service technician.
3
1 2
Tightening torque:
Tailpipe bolt: 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
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EVU00880Brake light switch adjustment
The brake light switch, which is activated 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. Open the hood. (See pages 8-7–8-8 for hood opening and closing procedures.)
2. Turn the adjusting nut while holding the
brake light switch in place. To make the
brake light come on earlier, turn the ad-
justing nut in direction a. To make the
brake light come on later, turn the adjust-
ing nut in direction b.
1. Brake light switch 2. Adjusting nut3. Close the hood.
1
a
b
2
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3. Remove the quick fastener screws.
4. Remove the battery compartment coverby lifting it up and pulling it out.1. Quick fastener screw ( × 2)
2. Battery compartment cover5. Remove the blown fuse, and then install
a new 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.
1. Fuel injection system spare fuse
2. Fuel injection system fuse
3. Main fuse
4. Headlight fuse “HEAD”
5. Signaling system fuse “SIGNAL”
6. Auxiliary DC jack fuse “TERMINAL”
7. Four-wheel-drive motor fuse “DIFF”
8. Ignition fuse “IGNITION”
9. Backup fuse “BACK UP” (for clock)
10. Spare fuse ( × 3)
11. Radiator fan fuse “FAN”
1
2
12 3 7
9
456 8
A
@
0
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6. 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.
7. Install the battery compartment cover by installing the quick fastener screws.
8. Close the hood.
EVU01670Replacing a headlight bulb
If a headlight bulb burns out, replace it as fol-
lows.
1. Open the hood. (See pages 8-7–8-8 for hood opening and closing procedures.)
2. Remove the cover at the rear of the
headlight by pulling it off.1. Cover at the rear of the headlight
Specified fuses:Main fuse: 40.0 A
Fuel injection system fuse: 10.0 A
Headlight fuse: 15.0 A
Ignition fuse: 10.0 A
Auxiliary DC jack fuse: 10.0 A
Signaling system fuse: 10.0 A
Four-wheel-drive motor
fuse: 10.0 A
Radiator fan fuse: 25.0 A
Backup fuse: 10.0 A
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3. Remove the headlight bulb holder coverby pulling it off.1. Headlight bulb holder cover
4. Remove the headlight bulb holder by pushing it in and turning it counterclock-
wise.1. Headlight bulb holder
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5. Wait for the headlight bulb to cool beforetouching or removing it. Remove the bulb
by pulling it out.
6. Insert a new headlight bulb into the bulb holder. NOTICE: Do not touch the
glass part of the headlight bulb to
keep it free from oil, otherwise the
transparency of the glass, the lumi-
nosity of the bulb, and the bulb life will
be adversely affected. Thoroughly
clean off any dirt and fingerprints on
the headlight bulb using a cloth moist-
ened with alcohol or thinner.
1. Do not touch the glass part of the bulb.7. Install the bulb holder by pushing it in and
turning it clockwise.
8. Install the bulb holder cover and the cov-
er at the rear of the headlight. NOTICE:
Make sure the headlight bulb holder
cover is securely fitted over the bulb
holder and seated properly.
9. Close the hood.
10. Adjust the headlight beam if necessary.
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