2021 YAMAHA KODIAK 450 radiator

4-1
4
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
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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5-2
5For 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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5
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 10-1.)
 Continuous use while the warning light is on
will damage the engine. EBU27289Engine 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-diagnostic 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 5-6). Have a Yamaha
dealer check the self-diagnostic 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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EBU23473CoolantThe coolant level should be checked regularly. In
addition, the coolant must be changed at the in-
tervals specified in the periodic maintenance
chart.TIPIf genuine Yamaha coolant is not available, use an
ethylene glycol antifreeze containing corrosion in-
hibitors for aluminum engines and mix with dis-
tilled water at a 1:1 ratio.
NOTICEECB02190Mix antifreeze with distilled water only. Howev-
er, if distilled water is not available, soft water
may be used for refilling. Do not use hard water
or salt water since they are harmful to the en-
gine. EBU2712ATo check the coolant level1. Park the ATV on a level surface.TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture. 2. Check the coolant level in the coolant reser- voir.TIPThe coolant should be between the minimum and
maximum level marks.
Recommended coolant:YAMALUBE coolant
Coolant quantity: Coolant reservoir (up to full level):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 1.32 L (1.40 US qt, 1.16 Imp.qt)
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93. If the coolant is at or below the minimum level
mark, remove panel C to access the coolant
reservoir. (See page 9-10.)
4. Remove the coolant reservoir cap. WARNING! Remove only the coolant res-
ervoir cap. Never attempt to remove the
radiator cap when the engine is hot.
[EWB02672]
5. Add coolant to the maximum level mark, in-stall the reservoir cap, and then install the
panel. NOTICE: If coolant is not available,
use distilled water or soft tap water in-
stead. Do not use hard water or salt water
since they are harmful to the engine. If wa-
ter has been used instead of coolant, re-
place it with coolant as soon as possible,
otherwise the cooling system will not be
protected against frost and corrosion. If
water has been added to the coolant, have
a Yamaha dealer check the antifreeze con-
1. Maximum level mark
2. Minimum level mark
1
2
1. Coolant reservoir cap
1
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tent of the coolant as soon as possible,
otherwise the effectiveness of the coolant
will be reduced.
[ECB01012]
EBU37131
To change the coolant
WARNING
EWB01891Wait for the engine and radiator to cool before
removing the radiator cap. You could be
burned by hot fluid and steam blown out under
pressure. Always place a thick rag over the cap
when opening. Allow any remaining pressure
to escape before completely removing the cap. 1. Park the ATV on a level surface.
2. Remove the front carrier and panel F. (See page 9-10.)
3. Remove the radiator cap. 4. Remove panels D and E. (See page 9-10.)
5. Place a container under the engine, and then
remove the coolant drain bolt and its gasket.
(Use a trough or a similar object as shown to
prevent coolant from spilling on the footrest.)
1. Radiator cap
1
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12. Pour the recommended coolant into the radi-
ator until it is full, and then install the radiator
cap.
13. Start the engine, let it idle for several minutes, and then turn it off.
TIPWhile the engine is idling, check the cooling sys-
tem for leaks. 14. When the engine is cool, remove the radiatorcap to check the coolant level in the radiator.
If it is low, add sufficient coolant until it reach-
es the top of the radiator, and then install the
radiator cap.
15. Install the panels and the front carrier.EBU37113Cleaning the air filterThe main air filter element and sub air filter ele-
ment should be cleaned every 20–40 hours of en-
gine operation. When servicing the air filter
elements, check the air filter case inlet for obstruc-
tions. Check the air filter case rubber joint to the
throttle body and the rubber joint manifold fittings
for an air-tight seal. Tighten all fittings securely to
avoid the possibility of unfiltered air entering the
engine.
TIP Replace the air filter elements if damaged.
 Service the air filter more frequently if you often
ride in wet or dusty areas.
 There is a check hose at the bottom of the air fil-
ter case. If dust or water collects in this hose,
empty the hose and clean the air filter case and
air filter elements. 1. Park the ATV on a level surface.
2. Remove the seat. (See page 5-18.)
3. Remove the air filter case cover by unhooking
the air filter case cover holders.1. Air filter case check hose
1
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EBU30806Replacing a fuse
If an electrical problem is suspected, check the
fuse and replace it if necessary as follows.NOTICEECB00641To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse. 1. Turn off all electrical systems. (See page 5-1.)
1. Fuel injection system spare fuse
2. Fuel injection system fuse
3. Main fuse
4. EPS fuse (equipped models)
5. Fuse box
1
2
3
4
5
1. Auxiliary DC jack fuse
2. Four-wheel-drive motor fuse
3. Ignition fuse
4. Radiator fan motor fuse
5. Signaling system fuse
6. Headlight fuse
7. Spare fuse
1
2
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5
6
7
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