2021 YAMAHA KODIAK 450 lock

5-19
5
To install the seat
Insert the projections on the front of the seat into
the seat holders, and then push down on the seat
at the rear to lock it in place. Make sure that the
seat is securely fitted.
EBU37061Storage compartmentNOTICEECB00131Do not store metal or sharply edged objects,
like tools, in the storage compartment. If they
must be stored, wrap them in appropriate
cushion material to prevent damaging the stor-
age compartment. The storage compartment is located under the
seat. (See page 5-18.)
When storing any documents in the storage com-
partment, be sure to wrap them in a plastic bag so
that they will not get wet. When washing the ATV,
be careful not to let any water enter the storage
compartment.
1. Projection
2. Seat holder
1
12
2
UBEY60E0.book Page 19 Monday, July 27, 2020 10:46 AM

6-2
6
Front brake• Check operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
• Check brake pads for wear, and replace if necessary.
• Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
• Check hydraulic system for leakage. Correct if necessary. 6-3, 9-40, 9-40, 9-42
Rear brake • Check operation, and correct if necessary.
• Lubricate cables if necessary.
• Check lever and pedal free play, and adjust if necessary. 6-3, 9-40, 9-42
Throttle lever • Make sure that operation is smooth. Lubricate cable and lever
housing if necessary.
• Check lever free play, and adjust if necessary. 6-4, 9-38
Control cables • Make sure that operation is smooth. Lubricate if necessary. 9-49
Wheels and tires • Check wheel condition, and replace if damaged.
• Check tire condition and tread depth. Replace if necessary.
• Check air pressure. Correct if necessary. 6-4
Brake pedal • Make sure that operation is smooth. Lubricate pedal pivoting point
if necessary. 9-50
Brake levers • Make sure that operation is smooth. Lubricate lever pivoting points
if necessary. 9-49
Axle boots • Check for cracks or damage, and replace if necessary. 9-47
Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened. 6-7
Instruments, lights and
switches • Check operation, and correct if necessary. 6-7
Winch • Confirm winch hook and rope are not dangling loose.
• Confirm winch clutch is locked (positively engaged).
5-22
ITEM ROUTINE PAGE
UBEY60E0.book Page 2 Monday, July 27, 2020 10:46 AM

7-5
7
EBU29901Parking on a slope
WARNING
EWB00861Avoid parking on hills or other inclines. Parking
on a hill or other incline could cause the ATV to
roll out of control, increasing the chance of an
accident. If you must park on an incline, place
the ATV transversely across the incline, stop
the engine, shift the drive select lever to the
park position, and then block the front and rear
wheels with rocks or other objects.
Do not park the ATV at all on hills that are so
steep you could not walk up them easily. 1. Bring the ATV to a stop by applying thebrakes.
2. Stop the engine.
3. With the brake pedal applied, shift the drive select lever to the park position.
EBU20911Accessories and loadingEBU20922Genuine Yamaha Accessories
Choosing accessories for your ATV is an impor-
tant decision. Genuine Yamaha Accessories,
which are available only from a Yamaha dealer,
have been designed, tested, and approved by
Yamaha for use on your ATV. Many companies with no connection to Yamaha manufacture parts
and accessories or offer other modifications for
Yamaha vehicles. Yamaha is not in a position to test the products that these aftermarket compa-
nies produce. Therefore, Yamaha can neither en-
dorse nor recommend the use of accessories not
UBEY60E0.book Page 5 Monday, July 27, 2020 10:46 AM

8-15
8Do not attempt to climb hills until you have mas-
tered basic maneuvers on flat ground. Always
check the terrain carefully before attempting any
hill. In all cases avoid inclines with slippery or
loose surfaces, or obstacles that might cause you
to lose control.
To climb a hill, you need traction, momentum, and
steady throttle. For more traction and control for
climbing steeper and/or rougher slopes, select
“4WD” or 4WD-LOCK (“DIFF. LOCK”). Travel fast
enough to maintain momentum, but not so fast
that you cannot react to changes in the terrain as
you climb.
It is important when climbing a hill to make sure
that your weight is transferred forward on the ATV.
This can be accomplished by leaning forward and,
on steeper inclines, standing on the footboards
and leaning forward over the handlebars. When-
ever possible, ride straight up hills.
Slow down when you reach the crest of the hill if
you cannot see clearly what is on the other side –
there could be another person, an obstacle, or a
sharp drop-off. Use common sense and remem-
ber that some hills are too steep for you to climb
or descend. If you are climbing a hill and you find that you have
not properly judged your ability to make it to the
top, you should turn the ATV around while you still
have forward motion (provided you have the room
to do so) and go down the hill.
If your ATV has stalled or stopped and you believe
you can continue up the hill, restart carefully to
make sure you do not lift the front wheels which
could cause you to lose control. If you are unable
to continue up the hill, dismount the ATV on the
uphill side. Physically turn the ATV around and
then descend the hill.
If you start to roll backwards, DO NOT apply either
brake abruptly. If you are in “2WD”, apply only the
front brake. When fully stopped, apply the rear
brake as well, and then shift to the park position. If
you are in “4WD”, because all wheels are inter-
connected by the drive train, applying either brake
will brake all wheels, therefore, avoid sudden ap-
plication of either the front or rear brake as the
wheels on the uphill side could come off the
ground. The ATV could easily tip over backwards.
Apply both the front and rear brakes gradually.
When fully stopped, shift to the park position and
dismount the ATV immediately on the uphill side,
or to a side if pointed straight uphill. Turn the ATV
UBEY60E0.book Page 15 Monday, July 27, 2020 10:46 AM

9-27
9
EBU38831Changing the differential gear oilThe differential gear case must be checked for oil
leakage before each ride. If any leakage is found,
have a Yamaha dealer check and repair the ATV.
In addition, the differential gear oil must be
changed as follows at the intervals specified in the
periodic maintenance chart.
For non-differential gear lock modelsFor differential gear lock models1. Differential gear oil filler bolt
2. Gasket
2
1
Recommended differential gear oil:
Yamaha Friction Modified Shaft Drive Gear Oil or SAE 80 API GL-4 Hypoid gear oil
Oil quantityW 0.35 L (0.37 US qt, 0.31 Imp.qtF1. Differential gear oil filler bolt
2. GasketRecommended differential gear oil:Yamaha Friction Modified Shaft Drive Gear Oil or SAE 80 API GL-4 Hypoid gear oil
Oil quantityW 0.23 L (0.24 US qt, 0.20 Imp.qtF
2
1
UBEY60E0.book Page 27 Monday, July 27, 2020 10:46 AM

9-35
9
5. Pull off the lock plate from the main air filter
assembly, and then remove the air filter ele-
ment (sponge material) from the frame.
6. Wash the air filter elements gently but thor- oughly with YAMALUBE Air Filter Cleaner, or
a dedicated parts cleaning solvent.
WARNING! Always use parts cleaning sol- vent. Never use low-flash-point solvents
or gasoline because the engine could
catch fire or explode.
[EWB01943]
7. Squeeze out the excess moisture, and let dry. NOTICE: Do not twist the sponge material
when squeezing it.
[ECB00442]
8. Check the air filter elements (sponge material) for damage, replace if necessary.
9. Apply YAMALUBE Foam Air Filter Oil (or equivalent) to the air filter elements.TIPThe sponge material should be wet but not drip-
ping. 10. Install the sub air filter element.
11. Install the main air filter element onto its frame, then the lock plate, and then install the
main air filter assembly.
1. Frame
2. Air filter element (sponge material)
3. Lock plate
1
2
3
UBEY60E0.book Page 35 Monday, July 27, 2020 10:46 AM

9-38
9
EBU29705Adjusting the throttle lever free playFor non-differential gear lock models
1. V-belt case drain plug
1
1. Throttle lever free play
2. Rubber cover
3. Locknut
4. Throttle lever free play adjusting bolt24 3
1
UBEY60E0.book Page 38 Monday, July 27, 2020 10:46 AM

9-39
9
For differential gear lock models
Periodically check the throttle lever free play and
adjust if necessary.
1. Slide the rubber cover back.
2. Loosen the locknut. 3. To increase the throttle lever free play, turn
the throttle lever free play adjusting bolt in di-
rection (a). To decrease the throttle lever free
play, turn the adjusting bolt in direction (b).
4. Tighten the locknut.
5. Slide the rubber cover to its original position.
EBU24062Valve clearanceThe valve clearance changes with use, resulting in
improper air-fuel mixture and/or engine noise. To
prevent this from occurring, the valve clearance
must be adjusted by a Yamaha dealer at the inter-
vals specified in the periodic maintenance chart.EBU29602BrakesReplacement of brake components requires pro-
fessional knowledge. Brake service should be
performed by a Yamaha dealer.
WARNING
EWB02572Operating with improperly serviced or adjust-
ed brakes could lead to a loss in braking ability
and an accident.
1. Throttle lever free play
2. Rubber cover
3. Locknut
4. Throttle lever free play adjusting boltThrottle lever free play: 2.0–4.0 mm (0.08–0.16 in)
2WD
4WD
3
4
2
1
(b)
(a)
UBEY60E0.book Page 39 Monday, July 27, 2020 10:46 AM