light YAMAHA YFZ450R 2013 Owner's Manual

8-15
8
To install the cowling
1. Place the cowling in the original position, and
then tighten the quick fasteners.
2. Install panels C, B and A.EBU29441Checking the spark plug The spark plug is an important engine component,
which should be checked periodically, preferably
by a Yamaha dealer. Since heat and deposits will
cause any spark plug to slowly erode, the spark
plug should be removed and checked in accor-
dance with the periodic maintenance and lubrica-
tion chart. In addition, the condition of the spark
plug can reveal the condition of the engine.
The porcelain insulator around the center elec-
trode of the spark plug should be a medium-to-light
tan (the ideal color when the vehicle is ridden nor-
mally). If the spark plug shows a distinctly different
color, the engine could be operating improperly.
Do not attempt to diagnose such problems your-
self. Instead, have a Yamaha dealer check the ve-
hicle.
If the spark plug shows signs of electrode erosion
and excessive carbon or other deposits, it should
be replaced.
1. Quick fastener
1. Quick fastener
11
1
1
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8-28
82. Remove the tailpipe by pulling it out of the
muffler.
3. Tap the tailpipe lightly, and then use a wire brush to remove any carbon deposits from the
spark arrester portion of the tailpipe and inside
of the tailpipe housing. 4. Insert the tailpipe into the muffler and align the
bolt holes.
5. Install the bolt and tighten it to the specified torque.
6. Remove the purging bolt and the gasket.
1. Tailpipe bolt
2. Tailpipe
1
2
1. Tailpipe
2. Spark arresterTightening torque: Tailpipe bolt:8 Nm (0.8 m·kgf, 5.8 ft·lbf)
1
2
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8-36
8hold the adjusting bolt with a wrench so
that it does not turn together with the lock-
nut.
[ECB00521]
WARNING
EWB02090Operating with improperly serviced or adjust-
ed brakes could cause the brakes to malfunc-
tion, resulting in reduced braking
performance. This could increase the chance
of a collision or accident. After adjusting the
parking brake free play, block the rear of the
ATV off the ground and spin the rear wheels.
Check to make sure there is no brake drag. If
brake drag is noticed, perform the adjustment
again.EBU24743Brake light switches The brake light, which is activated by the brake
pedal and brake lever, should come on just before
braking takes effect. The brake light switch for the brake pedal can be
adjusted as follows, but the front brake light switch
should be adjusted by a Yamaha dealer.
Turn the rear brake light switch adjusting nut while
holding the 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).
EBU30152Adjusting the clutch lever free play The clutch lever free play must be checked and, if
necessary, adjusted at the intervals specified in the
periodic maintenance and lubrication chart.
Tightening torque:
Locknut (rear brake caliper):16 Nm (1.6 m·kgf, 12 ft·lbf)1. Rear brake light switch
2. Rear brake light switch adjusting nut
1
2(a) (b)
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8-48
82. Remove the blown fuse, and then install a
new fuse of the specified amperage.
WARNING! Always use a fuse of the spec-
ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02172]
3. Turn the key to “ ” (on) and turn on the elec-trical circuits to check if the devices operate.
4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system.EBU30161Replacing a headlight bulb If a headlight bulb burns out, replace it as follows.1. Remove the headlight unit by removing the bolt, and then pulling the headlight unit out-
ward as shown. 2. Remove the headlight bulb holder cover.
Specified fuse:
20.0 A
1. Headlight unit
2. Bolt
1. Headlight bulb holder cover
1
2
1
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8-49
8
3. Remove the headlight bulb holder by pushing
it in and turning it counterclockwise, and then
remove the burnt-out bulb.
4. Place a new headlight bulb into position. NOTICE: Do not touch the glass part of the
headlight bulb to keep it free from oil, oth-
erwise the transparency of the glass, the
luminosity of the bulb, and the bulb life will
be adversely affected. Thoroughly clean
off any dirt and fingerprints on the head-
light bulb using a cloth moistened with al-
cohol or thinner.
[ECB00651]
5. Install the headlight bulb holder by pushing it in and turning it clockwise.
6. Install the headlight bulb holder cover.
7. Place the headlight unit in the original posi- tion, and then install the bolt.
1. Headlight bulb holder
1
1. Do not touch the glass part of the bulb.
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8-50
88. Adjust the headlight beam if necessary.
EBU25561Adjusting a headlight beam NOTICEECB00690It is advisable to have a Yamaha dealer make
this adjustment.To raise a headlight beam, turn the headlight beam
adjusting bolt in direction (a).
To lower a headlight beam, turn the adjusting bolt
in direction (b).
EBU26920Tail/brake light This model is equipped with an LED type of
tail/brake light.
If the tail/brake light does not come on, have a
Yamaha dealer check it.EBU25651Removing a wheel 1. Place the ATV on a level surface.
2. Loosen the wheel nuts.1. Headlight beam adjusting bolt
1
(a)
(b)
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8-52
8
EBU25740Troubleshooting Although Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the fu-
el, compression, or ignition systems, for example,
can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vital
systems yourself. However, should your ATV re-
quire any repair, take it to a Yamaha dealer, whose
skilled technicians have the necessary tools, expe-
rience, and know-how to service the ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02280Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces.U18P67E0.book Page 52 Wednesday, May 9, 2012 3:30 PM

10-4
10
Front brake:Type:Disc brake
Operation:
Right hand operation
Specified brake fluid: DOT 4Rear brake:Type:
Disc brake
Operation: Right foot operation
Specified brake fluid: DOT 4Front suspension:Type:Double wishbone
Spring/shock absorber type: Coil spring/gas-oil damper
Wheel travel:
250 mm (9.9 in)Rear suspension:Type:Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel: 280 mm (11.0 in)Electrical system:Ignition system:
TCI Charging system:
AC magneto
Battery:Model:
YTZ7S
Voltage, capacity: 12 V, 6.0 AhHeadlight:Bulb type:
Krypton bulbBulb voltage, wattage × quantity:Headlight:
12 V, 30.0/30.0 W × 2
Tail/brake light:
LED
Neutral indicator light: LED
Fuel level warning light: LED
Coolant temperature warning light:
LED
Engine trouble warning light: LEDFuse:Fuse:
20.0 A
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INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-23BBattery .......................................................................... 8-45
Brake and clutch levers, checking and lubricating ....... 8-41
Brake fluid, changing ................................................... 8-33
Brake fluid level, checking ........................................... 8-32
Brake lever ..................................................................... 4-6
Brake lever free play, checking the front ...................... 8-33
Brake light switches ..................................................... 8-36
Brake pads, checking the front and rear ...................... 8-30
Brake pedal .................................................................... 4-6
Brake pedal, checking and lubricating ......................... 8-42
Brake pedal height, checking ....................................... 8-34
Brakes .......................................................................... 8-30
Brakes, front and rear .................................................... 5-4CCables, checking and lubricating ................................. 8-40
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-5
Clutch lever free play, adjusting ................................... 8-36
Coolant .................................................................. 5-4, 8-22
Coolant temperature warning light ................................. 4-2
Cowling and panels, removing and installing ................. 8-9DDrive chain ..................................................................... 5-5Drive chain, lubricating ................................................ 8-40
Drive chain slack .......................................................... 8-38
EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-4
Engine oil and oil filter element .................................... 8-16
Engine, start ................................................................... 6-1
Engine stop switch ......................................................... 4-3
Engine trouble warning light .......................................... 4-3FFuel ......................................................................... 4-9, 5-4
Fuel level warning light .................................................. 4-3
Fuel tank cap ................................................................. 4-8
Fuse, replacing ............................................................ 8-47HHandlebar position, adjusting ...................................... 4-24
Handlebar switches ....................................................... 4-3
Headlight beam, adjusting ........................................... 8-50
Headlight bulb, replacing ............................................. 8-48IIdentification numbers .................................................. 11-1
Indicator light and warning lights ................................... 4-2
Instruments, lights and switches .................................... 5-7LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-4MMain switch .................................................................... 4-1
U18P67E0.book Page 1 Wednesday, May 9, 2012 3:30 PM

Maintenance and lubrication chart ................................. 8-5
Maintenance chart, emission control system ................. 8-3
Model label ................................................................... 11-1NNeutral indicator light ..................................................... 4-2OOwner’s manual and tool kit ........................................... 8-2PParking ........................................................................... 6-4
Parking brake free play, adjusting ................................ 8-34
Parking brake lever ........................................................ 4-7
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RRiding your ATV ............................................................. 7-1SSafety information .......................................................... 2-1
Seat .............................................................................. 4-10
Shifting ........................................................................... 6-2
Shift pedal ...................................................................... 4-8
Shift pedal, checking .................................................... 8-42
Shock absorber assemblies, adjusting the front .......... 4-11
Shock absorber assembly, adjusting the rear .............. 4-16
Spark arrester, cleaning ............................................... 8-27
Spark plug, checking .................................................... 8-15
Specifications ............................................................... 10-1
Speed limiter .................................................................. 4-5
Start switch ..................................................................... 4-4
Steering shaft, lubricating ............................................. 8-44
Storage ........................................................................... 9-2
Suspension, lubricating the upper and lower arm pivots .......................................................................... 8-43 Swingarm pivots, lubricating ........................................ 8-43
TTail/brake light .............................................................. 8-50
Throttle lever ........................................................... 4-4, 5-5
Throttle lever free play, adjusting ................................. 8-29
Tires ............................................................................... 5-5
Troubleshooting ........................................................... 8-52
Troubleshooting charts ................................................. 8-53VValve clearance ............................................................ 8-30
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-42
Wheel, installing ........................................................... 8-51
Wheel, removing .......................................................... 8-50
U18P67E0.book Page 2 Wednesday, May 9, 2012 3:30 PM