YAMAHA GRIZZLY 550 2010 Owners Manual

8-51
8 Front brake lever
Rear brake lever
EBU28832Checking and lubricating the brake
pedal The operation of the brake pedal should be
checked before each ride, and the pedal pivot
should be lubricated if necessary.TIPTo access the brake pedal pivot, remove panel H.
(See page 8-8.)Recommended lubricant:
Lithium-soap-based grease
U28P61E0.book Page 51 Wednesday, March 18, 2009 9:25 AM

8-52
8
EBU24962Checking the wheel hub bearings The 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 smoothly,
have a Yamaha dealer check the wheel hub bear-
ings.EBU25021Checking the stabilizer bushes The stabilizer bushes must be checked for cracks
or damage at the intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer replace the stabilizer bush-
es if necessary.EBU25051Lubricating the rear knuckle pivots The rear knuckle pivots must be lubricated at the
intervals specified in the periodic maintenance and
lubrication chart.
Lubricate the pivoting points using a grease gun.
EBU25102Lubricating the steering shaft The steering shaft must be lubricated at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
Recommended lubricant:
Lithium-soap-based grease1. Grease nippleRecommended lubricant:
Lithium-soap-based grease
U28P61E0.book Page 52 Wednesday, March 18, 2009 9:25 AM

8-53
8
EBU29046Battery 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.NOTICEECB00620Never attempt to remove the battery cell seals,
as this would permanently damage the battery.
WARNING
EWB02160Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can
cause 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 ig-
nition away. Ventilate when charging or using
in an enclosed space.
KEEP OUT OF REACH OF CHILDREN.
To remove the battery
1. Remove panel A. (See page 8-8.)
2. Remove the front carrier by removing the
bolts.1. Carrier bolt (under the fenders)
U28P61E0.book Page 53 Wednesday, March 18, 2009 9:25 AM

8-54
83. Remove the battery holding plate by removing
the nuts.
4. 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.
[ECB01001]
5. 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 electri-
cal accessories.
1. Carrier bolt (top)
1. Battery holding plate
2. Nut
3. Negative battery lead (black)
4. Positive battery lead (red)
12
43
U28P61E0.book Page 54 Wednesday, March 18, 2009 9:25 AM

8-55
8
NOTICEECB00930To 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. If you do
not have access to a constant-voltage battery
charger, have a Yamaha dealer charge your
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.NOTICEECB00940Always keep the battery charged. Storing a dis-
charged battery can cause permanent battery
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.
3. Install the battery holding plate by installing
the nuts.
4. Install the front carrier by installing the bolts
and tightening them to the specified torques.1. Positive battery lead (red)
2. Negative battery lead (black)
12
U28P61E0.book Page 55 Wednesday, March 18, 2009 9:25 AM

8-56
85. Install the panel.
EBU27751Replacing a fuse
The main fuse, the fuel injection system fuse, the
EPS fuse, and the fuse box are located under pan-
el A. (See page 8-8.)
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off all electrical
circuits. Tightening torques:
Carrier bolt (top):
26 Nm (2.6 m·kgf, 19 ft·lbf)
Carrier bolt (under the fenders):
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
1. Fuse box
2. Main/EPS spare fuse
3. Main fuse
4. EPS fuse (for EPS model)
5. Fuel injection system spare fuse
6. Fuel injection system fuse
1. Ignition fuse
2. Headlight fuse
3. Four-wheel-drive motor fuse
4. Radiator fan fuse
5. Signaling system fuse
6. Auxiliary DC jack fuse
7. Spare fuse
U28P61E0.book Page 56 Wednesday, March 18, 2009 9:25 AM

8-57
8
NOTICEECB00640To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse.2. 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 electrical
circuits to check if the devices operate.
4. If the fuse immediately blows again, have a
Yamaha dealer check the electrical system. Specified fuses:
Main fuse:
40.0 A
Headlight fuse:
15.0 A
Ignition fuse:
15.0 A
Four-wheel-drive motor fuse:
15.0 A
Signaling system fuse:
5.0 A
Auxiliary DC jack fuse:
15.0 A
Radiator fan fuse:
20.0 A
Fuel injection system fuse:
15.0 A
EPS fuse:
YFM550FAPZ 40.0 A
YFM5FGPHZ 40.0 A
YFM5FGPZ 40.0 A
U28P61E0.book Page 57 Wednesday, March 18, 2009 9:25 AM

8-58
8
EBU27443Replacing a headlight bulb If a headlight bulb burns out, replace it as follows.
1. Remove the cover at the rear of the headlight
by pulling it off.
2. Remove the headlight bulb cover.3. Disconnect the headlight coupler.1. Cover at the rear of the headlight
1. Headlight bulb cover
1. Headlight coupler
U28P61E0.book Page 58 Wednesday, March 18, 2009 9:25 AM

8-59
8 4. Unhook the headlight bulb holder, and then
remove the burnt-out bulb.
5. Place a new headlight bulb into position, and
then secure it with the bulb holder. NOTICE:
Do not touch the glass part of the head-
light bulb to keep it free from oil, otherwise
the transparency of the glass, the luminos-
ity of the bulb, and the bulb life will be ad-
versely affected. Thoroughly clean off any
dirt and fingerprints on the headlight bulb
using a cloth moistened with alcohol or
thinner.
[ECB00651]
6. Connect the headlight coupler.
7. Install the headlight bulb cover. NOTICE:
Make sure the headlight bulb cover is se-
curely fitted and seated properly.
[ECB01080]
8. Install the cover at the rear of the headlight.
9. Adjust the headlight beam if necessary.EBU25551Adjusting a headlight beam NOTICEECB00690It is advisable to have a Yamaha dealer make
this adjustment.
1. Headlight bulb holder
2. Headlight bulb
1. Do not touch the glass part of the bulb.
U28P61E0.book Page 59 Wednesday, March 18, 2009 9:25 AM

8-60
8To raise a headlight beam, turn the headlight beam
adjusting screw in direction (a).
To lower a headlight beam, turn the adjusting
screw in direction (b).
EBU25641Replacing the tail/brake light bulb If the tail/brake light bulb burns out, replace it as
follows.
1. Remove panel I. (See page 8-8.)
2. Remove the bulb holder (together with the
bulb) by turning it counterclockwise.3. Remove the burnt-out bulb by pushing it in
and turning it counterclockwise.1. Headlight beam adjusting screw
1. Tail/brake light bulb holder
1. Tail/brake light bulb
U28P61E0.book Page 60 Wednesday, March 18, 2009 9:25 AM