Engine YAMAHA KODIAK 450 2020 Owners Manual

EBU17421
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 .............. 4-1
Display unit ................................................. 4-4
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............................................. 4-16
Fuel ........................................................... 4-17
Seat ........................................................... 4-18 Storage compartment............................... 4-19
Front carrier .............................................. 4-20
Rear carrier ............................................... 4-20
Front and rear shock absorbers .............. 4-20
Winch (for Europe) .................................... 4-22
Trailer hitch (equipped models) ................ 4-23
Auxiliary DC jack....................................... 4-24
Winch pre-wiring (for Oceania) ................. 4-25
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 ..................................... 6-1UBB562E0.book Page 1 Thursday, March 14, 2019 9:59 AM

Operating the drive select lever and driving in reverse ....................................... 6-2
Engine break-in ........................................... 6-4
Parking ........................................................ 6-4
Parking on a slope ...................................... 6-5
Accessories and loading ............................. 6-5
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 ............. 7-20
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: Emission
control system .......................................... 8-3
Periodic maintenance chart: General maintenance and lubrication .................... 8-5
Removing and installing panels ................ 8-10
Checking the spark plug........................... 8-17
Engine oil and oil filter cartridge ............... 8-19
Why Yamalube ......................................... 8-23
Final gear oil ............................................. 8-24
Changing the differential gear oil .............. 8-27
Coolant ..................................................... 8-29
Cleaning the air filter ................................. 8-33
Cleaning the spark arrester ...................... 8-36
V-belt cooling duct check hose ................ 8-37
V-belt case drain plug............................... 8-37
Adjusting the throttle lever free play ......... 8-38
Valve clearance......................................... 8-39
Brakes....................................................... 8-39
Checking the front brake pads and rear brake friction plates ................................ 8-40
Checking the brake fluid level .................. 8-40
Changing the brake fluid .......................... 8-42
Checking the front brake lever free play... 8-42
Adjusting the rear brake lever and brake pedal ....................................................... 8-42
Axle boots................................................. 8-47
Brake light switches ................................. 8-48
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1-10
1
Wait for the engine to return to normal idle speed
before shifting.
2UD-F151E-00
Recommended
Minimum: FRONT
REAR
: FRONT
REAR: 35 kPa, (5.0 psi)
: 30 kPa, (4.4 psi)
: 32 kPa, (4.6 psi)
: 27 kPa, (4.0 psi)Never set tire pressure below minimum. It could cause
the tire to dislodge from the rim.Cargo or a trailer can affect stability and handling.
Read owner’s manual before loading or towing.
When riding with cargo or towing a trailer : Reduce speed
and allow more room to stop. Avoid hills and rough terrain.
Maximum Vehicle Load : 240 kg, (530 lbs)
Includes weight of operator, cargo and accessories
(and if applicab
le, trailer tongue weight).
WARNING
B16-F816M-00
YAMAHAIMPROPER TIRE PRESSURE OR OVERLOADING CAN
CAUSE LOSS OF CONTROL.
LOSS OF CONTROL CAN RESULT IN SEVERE
INJURY OR DEATH.OPERATING TIRE PRESSURE : Set with tires coldLOADING/TRAILER TOWING
5880 N
1322(600 kgf)
( 15 kgf)
37S-F151K-00
12
34
5
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2-1
2
EBU17432
SAFETY INFORMATION
SAFETY INFORMATION
EBU27255AN 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.UBB562E0.book Page 1 Thursday, March 14, 2019 9:59 AM

2-4
2
Never maintain an ATV without proper knowl-
edge. Contact an authorized ATV dealer to in-
form you on basic ATV maintenance. Certain
maintenance can only be carried out by certified
staff.
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 at-
tention. 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
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2-6
2gerous loss of lights or engine power. Also, the
battery tends to discharge more quickly if elec-
trical accessories are added.
WARNING
EWB00073Avoid 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.

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3-1
3
EBU17681
DESCRIPTION
EBU17691Left view
EBU17701Right view
1. Radiator cap
2. Air filter
3. Battery
4. Fuses
5. Brake/tail light
6. Engine oil filler cap
7. Oil filter cartridge
8. Coolant reservoir
9. V-belt cooling duct check hose
1
2
3
4
5
9
7
8
6
1. Spark arrester
2. Storage compartment and tool kit
3. Fuel tank cap
4. Spark plug
5. Auxiliary DC jack
6. Front shock absorber
7. Winch (for Europe)
8. Rear brake light switch
9. Brake pedal
10.V-belt case drain plug
11.Rear shock absorber111
7
2
3
4
56
8
10
9
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4-1
4
EBU17739
INSTRUMENT AND CONTROL FUNCTIONS
EBU29913Main switch“” (on)
All electrical systems are supplied with power. The
engine can be started. The key cannot be re-
moved.
“ ” (off)
All electrical systems are off. The key can be re-
moved.
EBU26699Indicator lights and warning lightsFor non-differential gear lock models
OFF ON
1. Neutral indicator light “N”
2. Reverse indicator light “R”
3. Park indicator light “P”
4. Coolant temperature warning light “ ”
5. Electric Power Steering warning light “EPS” (equipped models)
6. Engine trouble warning light “ ”
7. Four-wheel drive indicator light “ ”1
2
3 4
6
7
5
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4-2
4For differential gear lock models
EBU17861Neutral indicator light “ ”
This indicator light comes on when the transmis-
sion is in the neutral position.
EBU17831Reverse indicator light “ ”
This indicator light comes on when the transmis-
sion is in the reverse position.EBU17971Park indicator light “ ”
This indicator light comes on when the transmis-
sion is in the park position.EBU34562Coolant temperature warning light “ ”
This warning light comes on when the engine
overheats. 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
warning 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
electrical circuit.TIPThe radiator fan turns on or off automatically ac-
cording to the coolant temperature.
1. Neutral indicator light “N”
2. Reverse indicator light “R”
3. Park indicator light “P”
4. Coolant temperature warning light “ ”
5. Electric Power Steering warning light “EPS”
6. Engine trouble warning light “ ”
7. Four-wheel drive indicator light “ ”
8. Differential gear lock indicator light “ ” 1
2
3
4
6
7
8
5
DIFF.LOCK
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4-3
4
NOTICEECB02401The engine may overheat if the ATV is over-
loaded. Reduce the load to specification.
 The engine may overheat if mud or dirt has
accumulated on the radiator. Gently clean
the radiator. (See page 9-1.)
 Continuous use while the warning light is on
will damage the engine. EBU27288Engine trouble warning light “ ”
The electrical circuit of the warning light can be
checked by turning the key to “ ” (on). The
warning 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
vehicle.
For non-differential gear lock models
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. For differential gear lock models
This warning light comes on or flashes if a problem
is detected in the electrical circuit monitoring the
engine. When this occurs, the display will indicate
an error code (see page 4-6). Have a Yamaha
dealer check the self-diagnosis system.
EBU30572Electric Power Steering warning light “EPS”
(equipped models)
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 after the engine is started, the EPS sys-
tem may not be working correctly. When this oc-
curs, 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
functioning.
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