2021 YAMAHA KODIAK 450 maintenance

9-42
9
Be careful that water does not enter the
brake fluid reservoir when refilling. Water will
significantly lower the boiling point of the flu-
id and may result in vapor lock.
EBU24284Changing the brake fluidHave a Yamaha dealer change the brake fluid at
the intervals specified in the periodic maintenance
chart. In addition, have the oil seals of the brake
master cylinder and calipers as well as the brake
hoses replaced at the intervals listed below or
whenever they are damaged or leaking.
Oil seals: Replace every two years.
 Brake hoses: Replace every four years.
EBU24396Checking the front brake lever free
playThere should be no free play at the brake lever
end. If there is free play, have a Yamaha dealer in-
spect the brake system.EBU30348Adjusting the rear brake lever and
brake pedalThe rear brake lever free play, brake pedal free
play, and the brake pedal height must be checked
and adjusted at the intervals specified in the peri-
odic maintenance chart.1. No brake lever free play
1
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9-47
9
Adjusting the brake pedal free play
Measure the brake pedal free play and adjust if
necessary.
TIPThe brake lever free play and brake pedal height
must be adjusted before adjusting the brake pedal
free play. 1. Loosen the locknut.
2. To increase the brake pedal free play, turn the
brake pedal free play adjusting nut in direc-
tion (a). To decrease the brake pedal free
play, turn the adjusting nut in direction (b).
3. Tighten the locknut.
EBU24232Axle bootsThe axle boots must be checked for damage at
the intervals specified in the periodic maintenance
chart. Check the axle boots for tears or damage. If
any damage is found, have them replaced by a
Yamaha dealer.
1. Brake pedal free playBrake pedal free play: 20.0 mm (0.79 in)
1
1. Brake pedal free play adjusting nut
2. Locknut
21
(a)
(b)
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9-51
9
EBU24965Checking the wheel hub bearingsThe front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance chart. If there is play in a wheel hub
or if a wheel does not turn smoothly, have a
Yamaha dealer check the wheel hub bearings.EBU24974Lubricating the drive shaft universal
jointThe drive shaft universal joint must be lubricated
at the intervals specified in the periodic mainte-
nance chart.
TIPFor parts equipped with a grease nipple, use a
grease gun. EBU25024Checking the stabilizer bushesThe stabilizer bushes must be checked for cracks
or damage at the intervals specified in the periodic
maintenance chart.Recommended lubricant: Lithium-soap-based grease1. Grease nipple
1
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9-52
9Have a Yamaha dealer replace the stabilizer bush-
es if necessary.
EBU25055Lubricating the rear knuckle pivotsThe rear knuckle pivots must be lubricated at the
intervals specified in the periodic maintenance
chart.
TIPFor parts equipped with a grease nipple, use a
grease gun. EBU25096Lubricating the steering shaftThe steering shaft must be lubricated by a
Yamaha dealer at the intervals specified in the pe- riodic maintenance chart.
Recommended lubricant:
Lithium-soap-based grease1. Grease nippleRecommended lubricant:Lithium-soap-based grease
1
1
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10-2
10
EBU27264StorageShort-term
Always store your ATV in a cool, dry place and, if
necessary, protect it against dust with a porous
cover. NOTICE: Storing the ATV in a poorly ven-
tilated room or covering it with a tarp while it is
still wet, will allow water and humidity to seep
in and cause rust. To prevent corrosion, avoid
damp cellars, stables (because of the presence
of ammonia) and areas where strong chemi-
cals are stored.
[ECB00722]
Long-term
Before storing your ATV for several months: 1. Make any necessary repairs and perform all outstanding maintenance.
2. Follow all the instructions in the Cleaning sec- tion of this chapter.
3. Fill up the fuel tank and add fuel stabilizer (Fu- el Med Rx if available), and then run the en-
gine for 5 minutes to distribute the treated
fuel. 4. Perform the following steps to protect the en-
gine from internal corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place the spark plug on the
cylinder head so that the electrodes are
grounded. (This will limit sparking during
the next step.)
d. Turn the engine over several times with the starter. (This will coat the cylinder wall
with oil.)
e. Remove the spark plug cap from the spark plug, and then install the spark plug and
the spark plug cap.
5. Lubricate all control cables and the pivoting points of all levers and pedals.
6. Put the frame on stands or blocks to raise all wheels off the ground. (Alternatively, turn the
wheels each month to prevent the tires from
degrading in one spot.)
7. Cover the muffler outlet with a plastic bag to prevent moisture from entering it.
Specified amount:
7.5 ml per liter of fuel (1 oz per gallon)UBEY60E0.book Page 2 Monday, July 27, 2020 10:46 AM

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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
UBEY60E0.book Page 2 Monday, July 27, 2020 10:46 AM