2021 YAMAHA KODIAK 450 cooling

9-33
9
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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9-37
9
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.
4. Check the gasket for damage. Replace if nec- essary.
5. Install the gasket onto the tailpipe, then insert the tailpipe into the muffler and align the bolt
holes.
6. Install the bolts and tighten to the specified torque.
EBU23921V-belt cooling duct check hoseIf dust or water collects in the V-belt cooling duct
check hose, remove the hose and clean it.
EBU23932V-belt case drain plugAfter riding in water deep enough to allow it to en-
ter the V-belt case, remove the V-belt case drain
plug to drain the water from the case.TIPIf water drains from the V-belt case after removing
the plug, have a Yamaha dealer check the ATV as
the water may affect other engine parts.
Tightening torque:Tailpipe bolt:10 N

9-67
9
Engine overheating
WARNING
EWB02291Wait 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 put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap. TIP
Tap water can be used in an emergency. Change to the recommended coolant as soon as possible.
 The engine will tend to overheat if the radiator is caked with mud, or if the ATV is overloaded. Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
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11
EBU25964
SPECIFICATIONS
Dimensions:Overall length:2042 mm (80.4 in)
Overall width: 1180 mm (46.5 in)
Overall height:
1194 mm (47.0 in)
Seat height: 856 mm (33.7 in)
Wheelbase: 1240 mm (48.8 in)
Ground clearance:
245 mm (9.6 in)
Minimum turning radius: 3.2 m (10.50 ft)
Maximum water depth: 35 cm (14 in)Weight:Curb weight:301.4 kg (664 lb) (YFM450FWB)
308.3 kg (680 lb) (BEY1)
313.5 kg (691 lb) (BEY2/BEY3)Loading:Maximum load:240.0 kg (530 lb)
(Total weight of rider, cargo, accessories, and tongue)
Noise and vibration level:Noise level (77/311/EEC):78.0 dB(A) at 3125 r/min
Uncertainty of measurement: 3.0 dB(A)
Vibration on seat (EN1032, ISO5008):
Will not exceed 0.5 m/s²
Uncertainty of measurement: 0.0 m/s²
Vibration on handle (EN1032, ISO5008): Will not exceed 2.5 m/s²
Uncertainty of measurement:
0.2 m/s² (YFM450FWBD)
0.6 m/s² (YFM450FWB)Carbon dioxide (CO2) level:Carbon dioxide (CO2) emissions (2016/1628):1015.0 g/kWhEngine:Combustion cycle:
4-stroke
Cooling system: Liquid cooled
Valve train: SOHC
Number of cylinders:
Single cylinder
Displacement: 421 cm³
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13
Instruments, lights and switches ................................... 6-7LLabel locations ............................................................... 2-1
Light switch .................................................................... 5-9MMain switch .................................................................... 5-1
Maintenance chart, emission control system ................ 9-3
Maintenance chart, general maintenance and lubrication .................................................................... 9-5
Model label .................................................................... 1-1NNeutral indicator light ..................................................... 5-2OOn-Command drive switch “4WD/LOCK” (differential gear lock models) ...................................................... 5-11
Override switch (differential gear lock models) ............ 5-10
Owner’s Manuals and Tool kit ....................................... 9-2PPanels, removing and installing ................................... 9-10
Park indicator light ......................................................... 5-2
Parking ........................................................................... 7-4
Parking on a slope ......................................................... 7-5
Part locations ................................................................. 4-1RRear brake, adjusting the lever and pedal ................... 9-42
Rear knuckle pivots, lubricating .................................. 9-52
Reverse indicator light ................................................... 5-2
Riding your ATV ............................................................. 8-1SSafety information .......................................................... 3-1
Seat .............................................................................. 5-18 Shock absorber assemblies, adjusting the front and
rear ............................................................................ 5-20
Spark arrester, cleaning ............................................... 9-36
Spark plug, checking ................................................... 9-17
Specifications .............................................................. 11-1
Speed limiter ................................................................ 5-13
Stabilizer bushes, checking .......... ............................... 9-51
Starting the engine ........................................................ 7-1
Start switch .................................................................... 5-9
Steering shaft, lubricating ............................................ 9-52
Storage ........................................................................ 10-2
Storage compartment .................................................. 5-19
TThrottle lever ......................................................... 5-13, 6-4
Throttle lever free play, adjusting ................................ 9-38
Tires ............................................................................... 6-4
Trailer hitch (equipped models) ................................... 5-23
Troubleshooting ........................................................... 9-65
Troubleshooting charts ................................................ 9-66VValve clearance ............................................................ 9-39
V-belt case drain plug .................................................. 9-37
V-belt cooling duct check hose ................................... 9-37
Vehicle identification number ........................................ 1-1WWheel hub bearings, checking .................................... 9-51
Wheel, installing ........................................................... 9-64
Wheel, removing .......................................................... 9-63
Winch ........................................................................... 5-22
Winch switch ............................................................... 5-10
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