2014 YAMAHA YFZ450R Owners Manual

8-40
8
EBU24964Checking the wheel hub bearingsThe front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smooth-
ly, have a Yamaha dealer check the wheel hub
bearings.
EBU24996Lubricating the swingarm pivotsThe swingarm pivots must be lubricated by a
Yamaha dealer at the intervals specified in the pe- riodic maintenance and lubrication chart.
Recommended lubricant:
Lithium-soap-based greaseRecommended lubricant:Lithium-soap-based grease
U1TD6AE0.book Page 40 Wednesday, January 8, 2014 8:46 AM

8-41
8
EBU25034Lubricating the upper and lower arm
pivotsThe upper and lower arm pivots must be lubricat-
ed at the intervals specified in the periodic main-
tenance and lubrication chart.TIPFor parts equipped with a grease nipple, use a
grease gun.
Left side
Recommended lubricant: Lithium-soap-based grease1. Upper grease nipple
2. Lower grease nipple
21
2
U1TD6AE0.book Page 41 Wednesday, January 8, 2014 8:46 AM

8-42
8
Right side
EBU25093Lubricating the steering shaftThe steering shaft must be lubricated by a
Yamaha dealer at the intervals specified in the pe- riodic maintenance and lubrication chart.TIPFor parts equipped with a grease nipple, use a
grease gun.
EBU2918ABatteryThe battery is located under the seat. (See page
4-10.)
This model is equipped with a VRLA (Valve Regu-
lated Lead Acid) battery. There is no need to
check the electrolyte or to add distilled water.
However, the battery lead connections need to be
checked and, if necessary, tightened.
WARNING
EWB02161Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can cau-
se severe burns. Avoid contact with skin, eyes
or clothing. Always shield your eyes when
working near batteries.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.
EYES: Flush with water for 15 minutes and get
prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes or other sources of
ignition away. Ventilate when charging or using
in an enclosed space.
1. Upper grease nipple
2. Lower grease nippleRecommended lubricant: Lithium-soap-based grease
1
2
2
U1TD6AE0.book Page 42 Wednesday, January 8, 2014 8:46 AM

8-43
8KEEP OUT OF REACH OF CHILDREN.
NOTICEECB00621Never attempt to remove the battery cell seals,
as this would permanently damage the battery. To remove the battery
1. Remove the seat. (See page 4-10.)
2. Remove the battery holding plate by remov- ing the bolts.
3. Disconnect the negative battery lead first, then the positive battery lead by removing
their bolt. NOTICE: When removing the bat-
tery, the main switch must be off, and the
negative lead must be disconnected be-
fore the positive lead.
[ECB01002]
4. Pull the battery out of its compartment.
To charge the battery
Have a Yamaha dealer charge the battery as soon
as possible if it seems to have discharged. Keep
in mind that the battery tends to discharge more
quickly if the ATV is equipped with optional elec-
trical accessories.1. Bolt
2. Battery holding plate
3. Negative battery lead (black)
4. Positive battery lead (red)
1
1
2
3
4
U1TD6AE0.book Page 43 Wednesday, January 8, 2014 8:46 AM

8-44
8
NOTICEECB00932To charge a VRLA (Valve Regulated Lead Acid)
battery, a special (constant-voltage) battery
charger is required. Using a conventional bat-
tery charger will damage the battery. To store the battery
If the ATV will not be used for more than one
month, remove the battery, fully charge it, and
then place it in a cool, dry place.
 If the battery will be stored for more than two
months, check it at least once a month and fully
charge it if necessary.NOTICEECB00941Always keep the battery charged. Storing a
discharged battery can cause permanent bat-
tery damage. To install the batteryTIPBe sure the battery is fully charged. 1. Place the battery in its compartment. 2. Connect the positive battery lead first, then
connect the negative battery lead by installing
their bolt. NOTICE: When installing the bat-
tery, the main switch must be off, and the
positive lead must be connected before
the negative lead.
[ECB01111]
3. Install the battery holding plate by installing the bolts.
4. Install the seat. (See page 4-10.)1. Positive battery lead (red)
2. Negative battery lead (black)
2
1
U1TD6AE0.book Page 44 Wednesday, January 8, 2014 8:46 AM

8-45
8
EBU29962Replacing the fuseThe fuse holder is located under the seat. (See
page 4-10.)
If the fuse is blown, replace it as follows.1. Turn the key to “ ” (off) and turn off all elec- trical circuits.NOTICEECB00641To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse.
2. Remove the blown fuse, and then install anew 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.
[EWB02173]
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.EBU30871Replacing a headlight bulbIf a headlight bulb burns out, replace it as follows.1. Remove the headlight unit by removing the bolt and pulling the headlight unit outward as
shown.
1. Fuse
2. Spare fuse
1
2
Specified fuse:20.0 A
U1TD6AE0.book Page 45 Wednesday, January 8, 2014 8:46 AM

8-46
8
2. Remove the headlight bulb holder cover. 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.
[ECB00652]
1. Headlight unit
2. Bolt
1. Headlight bulb holder cover
1
2
1
1. Headlight bulb holder
1
U1TD6AE0.book Page 46 Wednesday, January 8, 2014 8:46 AM

8-47
85. Install the headlight bulb holder by pushing it
in and turning it clockwise.
6. Install the headlight bulb holder cover.
TIPWhen installing the headlight bulb holder cover,
make sure the “TOP” mark faces upwards.
7. Place the headlight unit in the original posi- tion, and then install the bolt.
1. Do not touch the glass part of the bulb.
1. Headlight bulb holder cover
2. “TOP” mark
12
U1TD6AE0.book Page 47 Wednesday, January 8, 2014 8:46 AM