2012 YAMAHA GRIZZLY 550 check engine light

EBU17420
TABLE OF CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ............................ 1-1
SAFETY INFORMATION .............................. 2-1
DESCRIPTION .............................................. 3-1Left view ...................................................... 3-1
Right view.................................................... 3-1
Controls and instruments ............................ 3-2
INSTRUMENT AND CONTROL
FUNCTIONS .................................................. 4-1 Main switch ................................................ 4-1
Indicator lights and warning lights .............. 4-2
Multi-function display .................................. 4-5
Handlebar switches .................................... 4-7
Throttle lever ............................................ 4-13
Speed limiter ............................................ 4-13
Front brake lever ...................................... 4-14
Brake pedal and rear brake lever ............. 4-14
Drive select lever ...................................... 4-15
Fuel tank cap ............................................ 4-15
Fuel .......................................................... 4-16
Seat .......................................................... 4-18 Storage compartments .............................4-18
Front carrier ..............................................4-21
Rear carrier ...............................................4-21
Adjusting the front and rear shock
absorber assemblies ...............................4-21
Auxiliary DC jack .......................................4-23
PRE-OPERATION CHECKS ..........................5-1 Fuel .............................................................5-3
Engine oil ....................................................5-3
Final gear oil ...............................................5-3
Differential gear oil ......................................5-3
Coolant .......................................................5-3
Front and rear brakes .................................5-3
Throttle lever ...............................................5-4
Tires ............................................................5-4
Chassis fasteners .......................................5-7
Instruments, lights and switches .................5-7
OPERATION...................................................6-1 Starting the engine ......................................6-1
Operating the drive select lever and driving in reverse ......................................6-2
Engine break-in ...........................................6-4U1HS60E0.book Page 1 Tuesday, April 26, 2011 7:53 PM

4-3
4
EBU30530Coolant temperature warning light“”
This warning light comes on when the engine over-
heats. When this occurs during operation, stop the
engine as soon as it is safe to do so and allow it to
cool down for about 10 minutes.
The electrical circuit of the warning light can be
checked by turning the key to “” (on). The warn-
ing light should come on for a few seconds, and
then go off.
If the warning light does not come on initially when
the key is turned to “” (on), or if the warning light
remains on, have a Yamaha dealer check the elec-
trical circuit.NOTICEECB00891
The engine may overheat if the ATV is over-
loaded. In this case, reduce the load to spec-
ification.
The engine may also overheat if mud or dirt
has accumulated on the radiator (i.e., after
riding in wet terrain). In this case, see page
8-20 for an explanation on how to access the
radiator.

Start the engine after making sure that the
warning light is out. Continuous use while
the warning light is on may cause damage to
the engine.EBU30480Engine trouble warning light “”
This warning light comes on or flashes when an
electrical circuit monitoring the engine is not work-
ing correctly. When this occurs, have a Yamaha
dealer check the self-diagnosis system. (See page
4-7 for an explanation of the self-diagnosis device.)
The electrical circuit of the warning light can be
checked by turning the key to “” (on). The warn-
ing light should come on for a few seconds, and
then go off.
If the warning light does not come on initially when
the key is turned to “” (on), or if the warning light
remains on, have a Yamaha dealer check the elec-
trical circuit.EBU30570Electric Power Steering warning light “EPS ”
(for EPS model)
This warning light comes on when the key is turned
to “” (on), and then goes off once the engine is
started. If the warning light remains on or comes on
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4-4
4
after the engine is started, the EPS system may
not be working correctly. When this occurs, have a
Yamaha dealer check the EPS system. The electrical circuit of the warning light can be
checked by turning the key to “” (on). If the
warning light does not come on, have a Yamaha
dealer check the electrical circuit.
TIP
If the engine is stopped using the engine stop
switch and the key is in the “” (on) position,
the EPS warning light comes on to indicate that
the power assistance for the steering is not func-
tioning.
If the steering load is too heavy (i.e., excessive
steering use when the ATV is traveling at a slow
speed), the power assist is reduced to protect
the EPS motor from overheating.EBU30450On-Command four-wheel-drive indicator “”,
On-Command differential gear lock
indicator “” and indicator light “DIFF.
LOCK”
The On-Command four-wheel-drive indicator “”
comes on when the On-Command four-wheel-
drive switch is set to the “4WD ” position. The On-Command differential gear lock
indicator
“” and the On-Command differential
gear lock indicator light “DIFF. LOCK ” come on
when the On-Command differential gear lock
switch is set to the “LOCK ” position.
TIP
Due to the synchronizing mechanism in the dif-
ferential gear case, the four-wheel-drive indica-
tor may not come on until the ATV starts moving.
When the On-Command differential gear lock
switch is set to “LOCK ” or “ 4WD”, the
indicator “” and the indicator light “DIFF.
LOCK ” will flash until the differential gear is com-
pletely locked or unlocked. If the indicator and
the indicator light continue to flash, the differen-
tial is not completely locked or unlocked. In this
case, start moving to allow time for the differen-
tial to lock or unlock.
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4-7
4Self-diagnosis device
This model is equipped with a self-diagnosis de-
vice for various electrical circuits.
If a problem is detected in any of those circuits, the
multi-function display will indicate an error code.
If the multi-function display indicates an error code,
note the code number, and then have a Yamaha
dealer check the vehicle.
NOTICEECB00811If the multi-function display indicates an error
code, the vehicle should be checked as soon
as possible in order to avoid engine damage.
EBU18061Handlebar switches EBU18080Engine stop switch
“/”
Set this switch to “” before starting the engine.
The engine stop switch controls the ignition and
stops the engine when it is running. Use this switch
to stop the engine in an emergency situation. The
engine will not start or run when this switch is set
to “” .
1. Error code display
1. Light switch “/ /OFF”
2. Start switch “”
3. Engine stop switch “/”
4. Override switch “OVERRIDE”
5. Horn switch “”
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4-13
4

Riding before the differential gear is properly en-
gaged or disengaged (e.g., when the indicator
and indicator light are flashing) will cause the ve-
hicle speed to be limited until the differential gear
is completely engaged or disengaged.
When the ATV is in four-wheel-drive differential
gear lock, the maximum traveling speed is limit-
ed to 35 km/h (22 mi/h). However, if conditions
require full engine power to be available, push
and hold the override switch to disable the differ-
ential gear lock speed limiter. (See page 4-8 for
a detailed explanation of this switch.)EBU18282Throttle lever Once the engine is running, pushing the throttle le-
ver will increase the engine speed.
Regulate the speed of the ATV by varying the
throttle position. Because the throttle is spring-
loaded, the ATV will decelerate, and the engine will
return to an idle any time the throttle lever is re-
leased.Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.
EBU18323Speed limiter Your ATV is equipped with an adjustable speed
limiter. The speed limiter keeps the throttle from
fully opening, even when the throttle lever is
pushed to the maximum.
1. Loosen the locknut.
2. To increase the maximum engine power avail- able and the maximum speed of the ATV, turn
the adjusting screw in direction (a). To de-1. Throttle lever
2WD
4WD
1
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6-1
6
EBU19881
OPERATION
EBU19901Read the Owner’s Manual carefully before riding
the ATV. If there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWB00631Read the Owner ’s Manual carefully to become
familiar with all controls in order to help pre-
vent any loss of control, which could cause an
accident or injury.EBU30560Starting the engine NOTICEECB00150See the “Engine break-in ” section on page 6-4
prior to operating the engine for the first time.1. Turn the key to “” (on) and the engine stop
switch to “”.
The following warning lights should come on
for a few seconds, then go off.

Coolant temperature warning light

Engine trouble warning light
The EPS warning light should come on, then
go off when the engine is started. (for EPS
model)
NOTICEECB00824If a warning light does not go off, see page 4-2
for the corresponding warning light circuit
check. To avoid possible damage, do not oper-
ate the ATV if a warning light stays on.2. Apply the brake pedal, and then shift the drive select lever into the neutral or park position.
The corresponding indicator light should
come on. If the indicator light does not come
on, have a Yamaha dealer check the electrical
circuit.TIPThis model is equipped with an ignition circuit cut-
off system. The engine can be started under the
following conditions:
The drive select lever is in the neutral or park po-
sition.
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6-4
6
TIP
When in reverse, the reverse indicator light
should come on. If the indicator light does not
come on, have a Yamaha dealer check the elec-
trical circuit.
Due to the synchronizing mechanism in the en-
gine, the indicator light may not come on until the
ATV starts moving.
4. Check behind for people or obstacles, andthen release the brake pedal.
5. Open the throttle lever gradually and continue to watch to the rear while backing.EBU20682Engine break-in TIP
For ATVs equipped with an odometer or an hour
meter, follow the figures given in km (mi) or the
figures given in hours.
For ATVs not equipped with an odometer or
hour meter, follow the figures given in hours.There is never a more important period in the life of
your engine than the first 320 km (200 mi) or 20
hours of riding. For this reason, you should read
the following material carefully.
Since the engine is brand new, do not put an ex-
cessive load on it for the first 320 km (200 mi) or 20
hours. The various parts in the engine wear and
polish themselves to the correct operating clear-
ances. During this period, prolonged full-throttle
operation or any condition that might result in en-
gine overheating must be avoided.
1. Drive select lever
2. L (Low-range)
3. H (High-range)
4. N (Neutral)
5. R (Reverse)
6. P (Park)
L 2H 3N4R5P6
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8-21
82. Remove the spark plug as shown, with the
spark plug wrench included in the owner ’s tool
kit.
To check the spark plug 1. Check that the porcelain insulator around the center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the ATV
is ridden normally).
TIPIf the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the ATV.2. Check the spark plug for electrode erosionand excessive carbon or other deposits, and
replace it if necessary.
3. Measure the spark plug gap with a wire thick- ness gauge and, if necessary, adjust the gap
to specification.
1. Spark plug wrench
Specified spark plug:NGK/LMAR6A-9
U1HS60E0.book Page 21 Tuesday, April 26, 2011 7:53 PM