2014 YAMAHA GRIZZLY 350 engine

EBU17137
Read this manual carefully before operating this vehicle. This manual should stay with this ve-
hicle if it is sold.
EN15997, ANSI/SVIA 1-2010
05 March, 2013
YFM350FWA (YFM350DE) (5Y4AH13W0D0516667–)
We, YAMAHA MOTOR CO., LTD. 2500 Shingai, Iwata, Japan,
declare in sole responsibility, that the product
(Make, model)
(If applicable)
and to the other relevant Directives of EEC
2004/108/EC
(Title and/or number and date of issue of the other Directives of EEC)
(If applicable)YAMAHA MOTOR EUROPE N.V.
Koolhovenlaan 101, 1119 NC Schiphol-Rijk, The Netherlands
Signature
Akihiro Tsuzuki
Date of Issue
to which this declaration applies, conforms to the essential health and
safety requirements of Directive 2006/42/EC
To effect correct application of the essential health and safety requirements
stated in the Directives of EEC, the following-standards and/or technical
specifications were consulted:
(Title and/or number and date of issue of standards and/or specifications)
Authorized Representative
EC Declaration of Conformity
conforming to Directive 2006/42/EC
Manufacturer
YAMAHA MOTOR MANUFACTURING CORPORATION OF AMERICA
1000 GA Highway 34 East, Newnan, Georgia 30265-1320, U.S.A.
General Manager
RV Engineering Division
Recreational Vehicle Business Unit
Business Development Operations
YAMAHA MOTOR CO., LTD.
U1NS62E0.book Page 1 Monday, April 8, 2013 4:59 PM

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 light ................ 4-2
Speedometer .............................................. 4-3
Handlebar switches .................................... 4-5
Throttle lever .............................................. 4-6
Speed limiter .............................................. 4-7
Front brake lever ........................................ 4-8
Brake pedal and rear brake lever ............... 4-8
Parking brake ............................................. 4-9
Drive select lever ...................................... 4-10
Fuel tank cap ............................................ 4-10
Fuel .......................................................... 4-11 Fuel cock ..................................................4-12
Starter (choke) ..........................................4-14
Seat ..........................................................4-14
Storage compartment ...............................4-15
Front carrier ..............................................4-16
Rear carrier ...............................................4-16
Adjusting the front shock absorber
assemblies ..............................................4-17
Adjusting the rear shock absorber assembly .................................................4-18
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 .................5-6
OPERATION...................................................6-1 Starting a cold engine .................................6-1U1NS62E0.book Page 1 Monday, April 8, 2013 4:59 PM

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 JUDGMENT .............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............. 7-9
TURNING YOUR ATV .............................. 7-12
CLIMBING UPHILL ................................... 7-13
RIDING DOWNHILL.................................. 7-16
CROSSING A SLOPE............................... 7-17
CROSSING THROUGH SHALLOW WATER ................................................... 7-18
RIDING OVER ROUGH TERRAIN ........... 7-21
SLIDING AND SKIDDING ......................... 7-21
WHAT TO DO IF... .................................... 7-22
WHAT TO DO... ........................................ 7-22
PERIODIC MAINTENANCE AND
ADJUSTMENT ............................................... 8-1 Owner’s manual and tool kit ....................... 8-2 Periodic maintenance chart for the
emission control system ...........................8-3
General maintenance and lubrication chart ..........................................................8-5
Checking the spark plug .............................8-9
Engine oil and oil filter cartridge ................8-11
Final gear oil .............................................8-15
Changing the differential gear oil ..............8-18
Cleaning the air filter element ...................8-19
Cleaning the spark arrester ......................8-22
V-belt cooling duct check hose .................8-24
V-belt case drain plug ...............................8-24
Adjusting the carburetor ............................8-25
Adjusting the engine idling speed .............8-25
Adjusting the throttle lever free play .........8-26
Valve clearance ........................................8-27
Adjusting the drive select lever safety system cable ...........................................8-27
Brakes .......................................................8-27
Checking the front brake pads and rear brake shoes ............................................8-27
Checking the brake fluid level ...................8-29
Changing the brake fluid ...........................8-30
Checking the front brake lever free play ...8-30
Adjusting the brake pedal height, and the brake pedal and rear brake lever free
play .........................................................8-30
U1NS62E0.book Page 2 Monday, April 8, 2013 4:59 PM

2-1
2
EBU17431
SAFETY INFORMATION
EBU17565AN ATV IS NOT A TOY AND CAN BE HAZARD-OUS TO OPERATE.An ATV handles differently from other vehicles, in-
cluding motorcycles and cars. A collision or roll-
over can occur quickly, even during routine
maneuvers such as turning and riding on hills or
over obstacles, if you fail to take proper precau-
tions.
SEVERE INJURY OR DEATH can result if you do
not follow these instructions:●Read this manual and all labels carefully and fol-
low the operating procedures described.●Never operate an ATV without proper training or
instruction. Take a training course. Beginners
should receive training from a certified instruc-
tor. Contact an authorized ATV dealer to find out
about the training courses nearest you.●Always follow the age recommendation:
– A child under 16 years old should never oper-
ate an ATV with engine size greater than 90 cc.
●Never allow a child under age 16 to operate an
ATV without adult supervision, and never allow
continued use of an ATV by a child if he or she
does not have the abilities to operate it safely.●Never carry a passenger on an ATV.●This vehicle is intended for off-road use only. Do
not operate on any paved surfaces such as:
sidewalks, driveways, parking lots, paved roads,
public streets or other motorway.●Watch carefully for other vehicles when operat-
ing on unpaved public streets or roads. Make
sure you know your country’s laws and regula-
tions before you ride on unpaved public streets
or roads.●Never operate an ATV without wearing an ap-
proved motorcycle helmet that fits properly. You
should also wear eye protection (goggles or face
shield), gloves, boots, a long-sleeved shirt or a
jacket, and long pants.●Never consume alcohol or drugs before or while
operating this ATV.
U1NS62E0.book Page 1 Monday, April 8, 2013 4:59 PM

2-4
2
In the event of an accident
1. If serious injuries are incurred, you may be safer staying next to your vehicle; it may
shield you from oncoming riders. Depending
on your injuries and position in the trail; you
must make a judgment call as to whether you
should move to a position off the trail. If you
have sustained head, neck, or back injuries,
or cannot feel your limbs, you should not
move. Keep your helmet on and remain mo-
tionless. Lie down next to your vehicle and
wait for help.
2. If less serious injuries are incurred and you can walk, then move to a position off the trail.
Check yourself for injuries and apply first aid
as needed.
3. If your injuries are light, when safe to do so, move your vehicle off the trail to avoid colli-
sions with oncoming riders. Check for injuries
and apply first aid as necessary. If you can
physically operate your vehicle, inspect your
vehicle. If the vehicle is in safe operating con-
dition and you can safely operate it, restart it
and ride gently back to camp or other known
location where you can receive medical atten- tion. If necessary, contact your riding party or
local authorities to let them know where you
are and what has happened.
In the event of a breakdown 1. If your vehicle will not restart or is not in safe operating condition, turn off the main switch
and engine stop switch. If the breakdown oc-
curs at twilight or night, leave the main switch
on so that your lights may warn other riders of
your stopped vehicle.
2. Get out of danger. Check for oncoming vehi- cles and when safe, push your vehicle to the
side of the trail or even off the main trail to
avoid any possible collisions with oncoming
riders. If you cannot move your vehicle by
yourself, when safe, walk to the nearest van-
tage point and signal an oncoming rider to
help you push your vehicle to a safe place off
the trail.
3. Inspect your vehicle for any immediate haz- ardous conditions. The most obvious hazard-
ous conditions are leaking fuel and
ungrounded or broken wiring. Visually check
for broken wiring and leaking fuel. Leaking
fuel can be confirmed by the odor of gasoline.
U1NS62E0.book Page 4 Monday, April 8, 2013 4:59 PM

2-5
24. Once immediate safety hazards are con-
firmed not to exist, you may remove your hel-
met to more closely inspect your vehicle.
Check for external signs of wear, broken
parts, fluid leaks, cracks in the frame, suspen-
sion damage, wheel damage, and so on. Fuel,
oil, and coolant usually give off a noticeable
odor.
5. If your vehicle will not restart or if it is unsafe to ride, then turn off all vehicle systems (en-
gine stop switch, main switch, and fuel cock),
and then signal or go for help.
Aftermarket Parts, Accessories, and Modifica-
tions
While you may find aftermarket products similar in
design and quality to genuine Yamaha accesso-
ries, recognize that some aftermarket accessories
or modifications are not suitable because of poten-
tial safety hazards to you or others. Installing after-
market products or having other modifications
performed to your vehicle that change any of the
vehicle’s design or operation characteristics can
put you and others at greater risk of serious injury
or death. You are responsible for injuries related to changes in the vehicle. Keep the following guide-
lines in mind, as well as those provided under
“Loading” when mounting accessories.
●Never install accessories that would impair the
performance of your ATV. Carefully inspect the
accessory before using it to make sure that it
does not in any way reduce ground clearance,
limit suspension travel, steering travel or control
operation.●Accessories fitted to the ATV can create instabil-
ity due to improper weight distribution.●Bulky or large accessories may seriously affect
the stability of the ATV.●Certain accessories can displace the operator
from his or her normal riding position. This im-
proper position limits the freedom of movement
of the operator and may limit control ability,
therefore, such accessories are not recom-
mended.●Use caution when adding electrical accessories.
If electrical accessories exceed the capacity of
the ATV’s electrical system, an electric failure
could result, which could cause a dangerous
loss of lights or engine power.
U1NS62E0.book Page 5 Monday, April 8, 2013 4:59 PM

2-6
2
WARNING
EWB00072Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon monoxide,
a deadly gas. Breathing carbon monoxide can
cause headaches, dizziness, drowsiness, nau-
sea, confusion, and eventually death.
Carbon Monoxide is a colorless, odorless,
tasteless gas which may be present even if you
do not see or smell any engine exhaust. Deadly
levels of carbon monoxide can collect rapidly
and you can quickly be overcome and unable
to save yourself. Also, deadly levels of carbon
monoxide can linger for hours or days in en-
closed or poorly ventilated areas. If you experi-
ence any symptoms of carbon monoxide
poisoning, leave the area immediately, get
fresh air, and SEEK MEDICAL TREATMENT.●Do not run engine indoors. Even if you try to
ventilate engine exhaust with fans or open
windows and doors, carbon monoxide can
rapidly reach dangerous levels.●Do not run engine in poorly ventilated or par-
tially enclosed areas such as barns, garages,
or carports.
●Do not run engine outdoors where engine
exhaust can be drawn into a building
through openings such as windows and
doors.
WARNING
EWB02591When transporting the ATV in another vehicle,
be sure it is kept upright and that the fuel cock
is in the “OFF” position. Otherwise, fuel may
leak out of the carburetor or fuel tank.
U1NS62E0.book Page 6 Monday, April 8, 2013 4:59 PM

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. Engine oil filler cap
8. Oil filter cartridge
9. V-belt cooling duct check hose
3
4,5
1
26
98 7
1. Rear shock absorber asse mbly 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
67
8
U1NS62E0.book Page 1 Monday, April 8, 2013 4:59 PM