2020 YAMAHA KODIAK 450 Engine

4-13
4
All wheels turn at the same speed when the dif-
ferential gear is locked, so it takes more effort
to turn the ATV. The effort needed to turn in-
creases with the riding speed. You may lose
control and have an accident if you cannot
make a sharp enough turn for the speed you
are traveling.
EBU18286Throttle leverPush the throttle lever to increase engine speed.
Spring tension returns the lever to the rest position
when released. Always check that the throttle le-
ver returns normally before starting the engine.
EBU18325Speed limiterThe speed limiter keeps the throttle from fully
opening, even when the throttle lever is pushed to
the maximum.
Adjusting the speed limiter1. Loosen the locknut.
2. To increase the maximum engine power
available and the maximum speed of the ATV,
turn the adjusting screw in direction (a). To
decrease the maximum engine power avail-
able and the maximum speed of the ATV, turn
1. Throttle lever
1. Locknut
2. Adjusting screw
3. No more than 12 mm (0.47 in)
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4-16
4
EBU37980Fuel tank capRemove the fuel tank cap by turning it counter-
clockwise.
WARNING
EWB02522Gasoline and gasoline vapors are extremely
flammable. To avoid fires and explosions and
to reduce the risk of injury when refueling, fol-
low these instructions. 1. Before refueling, turn off the engine and besure that no one is sitting on the vehicle. Nev-
er refuel while smoking, or while in the vicinity of sparks, open flames, or other sources of
ignition such as the pilot lights of water heat-
ers and clothes dryers.
2. Do not overfill the fuel tank. When refueling, be sure to insert the pump nozzle into the fuel
tank filler hole. Stop filling when the fuel
reaches the bottom of the filler tube. Because
fuel expands when it heats up, heat from the
engine or the sun can cause fuel to spill out of
the fuel tank.1. Fuel tank cap
1
1. Fuel tank filler tube
2. Maximum fuel level
1
2
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4-18
4About the recommended fuel
If knocking or pinging occurs, try a different brand
or higher octane gasoline.
For Europe, use RON 95 octane or higher.
For Oceania, use RON 91 octane or higher.
TIPGasoline containing ethanol can be used if the
ethanol content does not exceed 10% (E10). Gas-
oline containing methanol is not recommended
because it can cause damage to the fuel system
or vehicle performance problems. NOTICEECB00071Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the valves and piston
rings, as well as to the exhaust system.
EBU34141SeatTo remove the seat
Pull up the seat at the rear, and then pull the seat
rearward.1. Seat
1
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4-23
4
bystanders are a safe distance away. Use hook
strap to keep hands away from fairlead when
winding the winch rope.
NOTICEECBM0051Prolonged winching can overheat the winch
motor and can drain the vehicle’s battery, even
when the engine is idling. Allow the winch mo-
tor to cool and the battery to recharge between
uses. EBU28972Trailer hitch (equipped models)This ATV is equipped with a 5 cm (2 in) trailer hitch
receiver.
Trailer towing equipment can be obtained at a
Yamaha dealer. (See page 6-6 for precaution in- formation.)
1. Trailer hitch receiver
1
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4-24
4
EBU19186Auxiliary DC jack
NOTICEECB03760Do not use any single electrical accessory or
combination of accessories that require more
than the stated capacity at any one time. This
may overload the circuit and cause the fuse to
blow. TIPWhen using a winch or other electrical accesso-
ries, the power taken from the DC jack must be re-
duced accordingly. A 12-V accessory, such as a work light or radio
with the proper adapter, can be used when the
main switch is turned on. However, to prevent bat-
tery drain, use when the engine is running and the
headlights are turned off.1. Start the engine.
2. Turn the headlights off.
3. Turn the accessory off.
4. Open the auxiliary DC jack cap.
5. Insert the accessory power plug into the jack.
6. Turn the accessory on.
1. Auxiliary DC jack cap
2. Auxiliary DC jackAuxiliary DC jack system capacity: 10.0 A (120 W)
8.0 A (96 W) (Winch equipped models)
1
2
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4
TIPWhen inserting or removing the accessory pow-
er plug, turn the accessory off.
 When the auxiliary DC jack is not being used,
cover it with the cap. NOTICEECB00122If accessories are used with the engine off or
with the headlights on, the battery may dis-
charge to the point that the engine will not
start.
 Do not use an automotive cigarette lighter or
other accessory with a plug that gets hot.
The DC jack may be damaged. EBU37291Winch pre-wiring (for Oceania)This vehicle is equipped with pre-wiring leads for
a winch. Consult your Yamaha dealer for details.UBB562E0.book Page 25 Thursday, March 14, 2019 9:59 AM

5-1
5
EBU19203
PRE-OPERATION CHECKS
EBU19226Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always
follow the inspection and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWB00482Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equip-
ment damage. Do not operate the vehicle if you find any problem. If a problem cannot be corrected
by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:
ITEMROUTINE PAGE
Fuel • Check fuel level in fuel tank,
and add recommended fuel if neces-
sary.
• Check fuel line for leakage. Correct if necessary. 4-17, 5-3
Engine oil • Check oil level in engine, and add recommended oil to specified
level if necessary.
• Check ATV for oil leakage. Correct if necessary. 5-3, 8-19
Final gear oil • Check ATV for oil leakage. Correct if necessary. 5-3, 8-24
Differential gear oil • Check ATV for oil leakage. Correct if necessary. 5-3, 8-27
Coolant • Check coolant level in reservoir, and add recommended coolant to
specified level if necessary.
• Check cooling system for leakage. Correct if necessary. 5-3, 8-29
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5-3
5
EBU38000FuelMake sure there is sufficient gasoline in the tank
before starting off. Refuel if necessary. (See page
4-17.)EBU19561Engine oilMake sure that the engine oil is at the specified
level. Add oil as necessary. (See page 8-19.)EBU19591Final gear oilMake sure that the final gear oil is at the specified
level. Add oil as necessary. (See page 8-24.)EBU19601Differential gear oilMake sure that the differential gear oil is at the
specified level. Add oil as necessary. (See page
8-27.)EBU19632CoolantMake sure that the coolant is at the specified level.
Add coolant as necessary. (See page 8-29.)
TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture. EBU28533Front and rear brakesBrake levers and brake pedal
Check that there is no free play in the front
brake lever. If there is free play, have a Yamaha
dealer check the brake system.
 Check for correct free play in the rear brake le-
ver and brake pedal. If the free play is incorrect,
adjust it. (See page 8-42.)
 Check operation of the levers and pedal. They
should move smoothly and there should be a
firm feeling when the brake is applied. If not,
have a Yamaha dealer check them.
Brake fluid level (front brake)
Check the brake fluid level. Add fluid if necessary.
(See page 8-40.)
Specified brake fluid:DOT 4
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