check engine light YAMAHA GRIZZLY 350 2010 Owners Manual
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EBU17420
TABLE OF CONTENTS
LOCATION OF THE WARNING AND 
SPECIFICATION LABELS  ............................ 1-1
SAFETY INFORMATION  .............................. 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  .............................................. 4-5
Speed limiter  .............................................. 4-6
Front brake lever  ........................................ 4-7
Brake pedal and rear brake lever  ............... 4-7
Parking brake  ............................................. 4-8
Drive select lever ........................................ 4-9
Recoil starter  .............................................. 4-9
Fuel tank cap ............................................ 4-10Fuel ...........................................................4-10
Fuel cock  ..................................................4-12
Starter (choke)  ..........................................4-13
Seat ..........................................................4-14
Storage compartment  ...............................4-15
Front carrier  ..............................................4-16
Rear carrier  ...............................................4-16
Adjusting the front shock absorber 
assemblies ..............................................4-16
Adjusting the rear shock absorber 
assembly .................................................4-17
PRE-OPERATION CHECKS ..........................5-1
Fuel .............................................................5-3
Engine oil  ....................................................5-3
Final gear oil  ...............................................5-3
Differential gear oil  ......................................5-3
Front and rear brakes  .................................5-3
Throttle lever  ...............................................5-4
Tires ............................................................5-4
Chassis fasteners  .......................................5-6
Instruments, lights and switches  .................5-6U1AB60E0.book  Page 1  Wednesday, April 29, 2009  10:19 AM 
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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
3
4,5 1
26
10978
1. Rear shock absorber assembly spring preload adjusting 
ring
2. Spark arrester
3. Storage compartment and tool kit
4. Spark plug
5. Front shock absorber assembly spring preload adjusting 
ring
6. Rear brake light switch
7. Brake pedal
8. V-belt case drain plug12 3 4 5
6 7 8
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4-2
4
EBU17814Indicator lights and warning light EBU17850Reverse indicator light “REVERSE” 
This indicator light comes on when the transmis-
sion is in the reverse position.EBU17870Neutral indicator light “NEUTRAL” 
This indicator light comes on when the transmis-
sion is in the neutral position.
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.
If 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.NOTICEECB00010The 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 to
the engine.
1. Reverse indicator light “REVERSE”
2. Neutral indicator light “NEUTRAL”
3. On-Command four-wheel-drive indicator light“”
4. Oil temperature warning light“”U1AB60E0.book  Page 2  Wednesday, April 29, 2009  10:19 AM 
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6-1
6
EBU19880
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.EBU20032Starting a cold engine NOTICEECB00150See the “Engine break-in” section on page 6-4
prior to operating the engine for the first time.1. Set the parking brake.
2. Turn the fuel cock to “ON”.
3. Turn the key 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.
TIPThe 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 before
starting the engine.5. Use the starter (choke) in reference to the fig-
ure:
Position (1):
Cold engine start with ambient temperature
below 5 °C (40 °F).
Position (2):
Cold engine start with ambient temperature
between 0 °C (30 °F) and 30 °C (90 °F).
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6-4
6 1. Bring the ATV to a complete stop.
2. Apply the brake pedal.
3. Shift from neutral to reverse and vice versa by
moving the drive select lever along the shift
guide.
TIPWhen 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.EBU20682Engine break-in TIPFor 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. F (Forward)
3. N (Neutral)
4. R (Reverse)
F2N3R4
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8-7
8
16 Engine oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√ √√√
17Engine oil filter car-
tridgeReplace.√√√
18 Differential gear oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√√
19 Final gear oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√√
20*Moving parts and 
cablesLubricate.√√√√
21*Drive select lever 
safety system cableCheck operation and adjust or replace if neces-
sary.√√√
22*Throttle lever hous-
ing and cableCheck operation and correct if necessary.
Check throttle cable free play and adjust if neces-
sary.
Lubricate throttle lever housing and cable.√√√√√
23*Front and rear brake 
switchesCheck operation and correct if necessary.√√√√√
24*Lights and switchesCheck operation and correct if necessary.
Adjust headlight beams.√√√√√ NO. ITEMCHECK OR MAINTENANCE 
JOBINITIAL EVERY
Whichev-
er comes 
firstmonth136612
km 
(mi)320 
(200)1300 
(800)2500 
(1600)2500 
(1600)5000 
(3200)
hours 20 80 160 160 320U1AB60E0.book  Page 7  Wednesday, April 29, 2009  10:19 AM 
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8-10
8dance 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).
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.
1. Spark plug cap
1. Spark plug wrench
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8-23
8 case. Never operate the engine with the air
filter element removed. This will allow un-
filtered air to enter the engine, causing rap-
id engine wear and possible engine
damage. Additionally, operation without
the air filter element will affect carburetor
jetting with subsequent poor performance
and possible engine overheating.
 [ECB00461]
12. Install the seat.TIPThe air filter element should be cleaned every 20–
40 hours. It should be cleaned and lubricated more
often if the ATV is operated in extremely dusty ar-
eas. Each time the air filter element maintenance
is performed, check the air inlet of the air filter case
for obstructions. Check the air filter case rubber
joint to the carburetor fittings and the rubber joint
manifold fittings for an air-tight seal. Tighten all fit-
tings securely to avoid the possibility of unfiltered
air entering the engine.EBU27081Cleaning the spark arrester Be sure the exhaust pipe and muffler are cool be-
fore cleaning the spark arrester.
1. Remove the bolts.2. 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.
1. Bolt
2. Tailpipe
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8-35
8
TIPThe brake light switch is properly adjusted when
the brake light comes on just before braking takes
effect.2. Turn the 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).
3. Install the panel.
EBU24901Checking and lubricating the cables The operation and the condition of all control ca-
bles should be checked before each ride, and the
cables and cable ends should be lubricated if nec-
essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.
WARNING
EWB02581Inspect cables frequently and replace if dam-
aged. Corrosion can result when the cable
sheaths become damaged, and cables can
also become frayed or kinked, which could
restrict the operation of controls and lead to
an accident or injury.Always 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.
1. Brake light switch
2. Brake light switch adjusting nut
Recommended lubricant:
Engine oil
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INDEX
AAccessories and loading  ................................................ 6-6
Air filter element, cleaning ............................................ 8-20
Axle boots  .................................................................... 8-34BBattery .......................................................................... 8-38
Brake fluid, changing  ................................................... 8-30
Brake fluid level, checking  ........................................... 8-29
Brake lever free play, checking the front ...................... 8-30
Brake lever, front ............................................................ 4-7
Brake levers, checking and lubricating  ........................ 8-36
Brake light switches  ..................................................... 8-34
Brake pads and shoes, checking  ................................. 8-28
Brake pedal and brake lever free play (rear) and 
brake pedal position, adjusting and checking  ............ 8-31
Brake pedal and rear brake lever ................................... 4-7
Brake pedal, checking and lubricating  ......................... 8-36
Brakes .......................................................................... 8-28
Brakes, front and rear  .................................................... 5-3CCables, checking and lubricating  ................................. 8-35
Carburetor, adjusting  ................................................... 8-25
Carrier, front  ................................................................. 4-16
Carrier, rear .................................................................. 4-16
Chassis fasteners  .......................................................... 5-6
Cleaning ......................................................................... 9-1DDifferential gear oil  ......................................................... 5-3Differential gear oil, changing  ...................................... 8-18
Drive select lever  ........................................................... 4-9
Drive select lever and driving in reverse  ........................ 6-3
Drive select lever safety system cable, adjusting  ........ 8-28
EEngine break-in .............................................................. 6-4
Engine, cold start  ........................................................... 6-1
Engine idling speed  ..................................................... 8-25
Engine oil  ....................................................................... 5-3
Engine oil and oil filter cartridge ................................... 8-12
Engine, starting a warm  ................................................. 6-3
Engine stop switch  ......................................................... 4-4FFinal gear oil  ......................................................... 5-3, 8-16
Four-wheel-drive indicator light ...................................... 4-3
Fuel ....................................................................... 4-10, 5-3
Fuel cock  ..................................................................... 4-12
Fuel tank cap  ............................................................... 4-10
Fuses, replacing  .......................................................... 8-40HHandlebar switches  ....................................................... 4-4
Headlight beam, adjusting  ........................................... 8-43
Headlight bulb, replacing  ............................................. 8-42
Horn switch  .................................................................... 4-4IIdentification numbers .................................................. 11-1
Indicator lights and warning light  ................................... 4-2
Instruments, lights and switches  .................................... 5-6
U1AB60E0.book  Page 1  Wednesday, April 29, 2009  10:19 AM