2008 YAMAHA GRIZZLY 350 check engine light

EBU17420
TABLE OF CONTENTS
SAFETY INFORMATION .............................. 1-1
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ............................ 2-1
DESCRIPTION .............................................. 3-1
Left 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 light ................ 4-2
Speedometer .............................................. 4-3
Handlebar switches .................................... 4-4
Throttle lever .............................................. 4-6
Speed limiter .............................................. 4-7
Front brake lever ........................................ 4-8
Rear brake lever ......................................... 4-8
Brake pedal ................................................ 4-9
Parking brake ............................................. 4-9
Drive select lever ...................................... 4-10
Recoil starter ............................................ 4-10Fuel tank cap ............................................4-11
Fuel ...........................................................4-11
Fuel cock ..................................................4-13
Starter (choke) ..........................................4-14
Steering lock .............................................4-15
Seat ..........................................................4-15
Storage compartment ...............................4-16
Front carrier ..............................................4-17
Rear carrier ...............................................4-17
Adjusting the front shock absorber
assemblies ..............................................4-17
Adjusting the rear shock absorber
assembly .................................................4-19
Catalytic converter ....................................4-20
PRE-OPERATION CHECKS ..........................5-1
Pre-operation check list ..............................5-1
Fuel .............................................................5-3
Engine oil ....................................................5-3
Final gear oil ...............................................5-3
Differential gear oil (4WD model).................5-3
Front and rear brakes .................................5-3
Throttle lever ...............................................5-4
Tires ............................................................5-4

Measuring the tire pressure ....................... 5-5
Tire wear limit ............................................. 5-6
Chassis fasteners ....................................... 5-7
Instruments, lights and switches ................ 5-7
OPERATION .................................................. 6-1
Starting a cold engine ................................ 6-1
Starting a warm engine .............................. 6-3
Operating the drive select lever and
driving in reverse ...................................... 6-3
Engine break-in .......................................... 6-4
Parking ....................................................... 6-5
Parking on a slope ..................................... 6-5
Accessories and loading ............................ 6-6
RIDING YOUR ATV ...................................... 7-1
GETTING TO KNOW YOUR ATV............... 7-2
RIDE WITH CARE AND GOOD
JUDGEMENT ............................................ 7-2
BE CAREFUL WHERE YOU RIDE ............. 7-9
TURNING YOUR ATV .............................. 7-13
CLIMBING UPHILL ................................... 7-14
RIDING DOWNHILL.................................. 7-17
CROSSING A SLOPE............................... 7-18
CROSSING THROUGH SHALLOW
WATER ................................................... 7-19
RIDING OVER ROUGH TERRAIN ........... 7-22SLIDING AND SKIDDING .........................7-22
WHAT TO DO IF........................................7-24
WHAT TO DO... .........................................7-24
PERIODIC MAINTENANCE AND MINOR
REPAIR ..........................................................8-1
Owner’s manual and tool kit .......................8-1
Periodic maintenance chart for
the emission control system .....................8-3
General maintenance and lubrication
chart ..........................................................8-5
Removing and installing the panel ..............8-9
Checking the spark plug .............................8-9
Engine oil and oil filter cartridge ................8-11
Final gear oil .............................................8-15
Changing the differential gear oil
(4WD model)............................................8-18
Cleaning the air filter element ...................8-20
V-belt cooling duct check hose .................8-23
V-belt case drain plug ...............................8-23
Adjusting the carburetor ............................8-23
Adjusting the engine idling speed .............8-24
Adjusting the throttle cable free play .........8-25
Valve clearance ........................................8-25
Adjusting the drive select lever safety
system cable ...........................................8-26

3-1
3
EBU17680
DESCRIPTION
EBU17690Left view
EBU17700Right view
1. Fuel cock
2. Throttle stop screw
3. Air filter case
4. Fuses
5. Battery
6. Tail/brake light
7. Recoil starter
8. Engine oil filler cap
9. Oil filter cartridge
10.V-belt cooling duct check hose
1. Rear shock absorber assembly spring preload adjusting
ring
2. Storage compartment and tool kit
3. Spark plug
4. Front shock absorber assembly spring preload adjusting
ring
5. Rear brake light switch
6. Brake pedal
7. V-belt case drain plug

4-2
4
EBU17813Indicator lights and warning light EBU27970Turn signal indicator light“”
This indicator light flashes when the turn signal
switch is pushed to the left or right.
EBU17830Reverse indicator light“”
This indicator light comes on when the transmis-
sion is in the reverse position.EBU17860Neutral indicator light“”
This indicator light comes on when the transmis-
sion is in the neutral position.EBU27980High beam indicator light“”
This indicator light comes on when the high beam
of the headlight is switched on.EBU26931Oil temperature warning light“”
This warning light comes on when the engine over-
heats. When this occurs, stop the engine as soon
as it is safe to do so, and allow it to cool.
The electrical circuit of the warning light can be
checked by turning the key to “ON”, with the engine
stop switch set to“”, and then pushing the start
switch.
If the warning light does not come on while the start
switch is being pushed, then go off after the start
switch is released, have a Yamaha dealer check
the electrical circuit.
1. Reverse indicator light “R”
2. Neutral indicator light “N”
3. High beam indicator light“”
4. Oil temperature warning light“”
5. Turn signal indicator light“”
6. On-Command four-wheel-drive indicator light“” (4WD
model)

4-3
4If the warning light stays on, allow the engine to
cool. If the warning light stays on when the engine
is cool, have a Yamaha dealer check the electrical
circuit.
CAUTION:ECB00010
The engine may overheat if the ATV is over-
loaded. In this case, reduce the load to spec-
ification.
Start the engine after making sure that the
warning light is out. Continuous use while
the warning light is on may cause damage tothe engine.EBU17952On-Command four-wheel-drive indicator
light“” (4WD model)
This indicator light comes on when the On-Com-
mand four-wheel-drive switch is set to the “4WD”
position.NOTE:Due to the synchronizing mechanism in the differ-
ential gear case, the light may not come on untilthe ATV starts moving.
EBU18020Speedometer The speedometer shows the riding speed. This
speedometer is equipped with an odometer and a
tripmeter. The tripmeter can be reset to “0” with the
reset knob. Use the tripmeter to estimate how far
you can ride on a tank of fuel before going to re-
serve. This information will enable you to plan fuel
stops in the future.1. Reset knob
2. Speedometer
3. Odometer
4. Tripmeter
123
4

6-1
6
EBU19880
OPERATION
EBU19900Read the Owner’s Manual carefully before riding
the ATV.
WARNING
EWB00630Read 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. If there is a control or func-
tion you do not understand, ask your Yamahadealer.EBU20031Starting a cold engine
WARNING
EWB00640Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-dent or collision.
CAUTION:ECB00150See the “Engine break-in” section on page 6-4prior to operating the engine for the first time.
1. Set the parking brake.
2. Turn the fuel cock to “ON”.
3. Turn the main switch to “ON” and the engine
stop switch to“”.
4. Shift the drive select lever into the neutral po-
sition. The neutral indicator light should come
on. If the indicator light does not come on,
have a Yamaha dealer check the electrical cir-
cuit.NOTE:The engine can be started under the following con-
ditions:
The drive select lever is in the neutral position.
The rear brake lever is applied with the drive se-
lect lever in any position. However, it is recom-
mended to shift into the neutral position beforestarting the engine.

6-4
63. Shift from neutral to reverse and vice versa by
moving the drive select lever along the shift
guide.
NOTE:When in reverse, the reverse indicator light should
come on. If the indicator light does not come on,have a Yamaha dealer check the electrical circuit.
4. Check behind for people or obstacles, and
then release the brake pedal.5. Open the throttle lever gradually and continue
to watch to the rear while backing.
WARNING
EWB00720Improper operation in reverse could make you
hit an obstacle or even a person behind you,
resulting in serious injury. When you shift into
reverse, make sure there are no people or ob-
stacles behind you. When it is safe to proceed,go slowly.EBU20682Engine break-in NOTE:
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 orhour 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
1. Drive select lever
2. F (Forward)
3. N (Neutral)
4. R (Reverse)

8-10
8plug 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.
To remove the spark plug
1. Remove the spark plug cap.
2. 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).
NOTE:If 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 erosion
and excessive carbon or other deposits, and
replace it if necessary.
1. Spark plug cap
1. Spark plug wrench