2002 YAMAHA KODIAK 400 maintenance

EBU00946
1-INTRODUCTION
Congratulations on your purchase of the Yamaha
YFM4FAP. It represents the result of many years
of Yamaha experience in the production of fine
sporting, touring, and pacesetting racing ma-
chines. With the purchase of this Yamaha, you can
now appreciate the high degree of craftsmanship
and reliability that have made Yamaha a leader in
these fields.
This manual will provide you with a good basic un-
derstanding of the features and operation of this
ATV.
This manual includes important safety in-
formation. It provides information about spe-
cial techniques and skills necessary to ride
your ATV. It also includes basic maintenance and
inspection procedures. If you have any questions
regarding the operation or maintenance of your
ATV, please consult a Yamaha dealer.
U5GH62.book Page 4 Monday, August 6, 2001 9:09 AM

Tires ...................................................5-25
How to measure tire pressure ............5-29
Tire wear limit .....................................5-31
OPERATION ...........................................6-1
Starting a cold engine ..........................6-3
Starting a warm engine ........................6-9
Warming up ..........................................6-9
Drive select lever operation and
reverse driving ..................................6-11
Engine break-in ..................................6-17
Parking ...............................................6-19
Parking on a slope .............................6-21
Accessories and loading ....................6-23
Loading ..............................................6-27
RIDING YOUR ATV..................................7-1
Getting to know your ATV .....................7-3
Ride with care and good judgement .....7-5
Be careful where you ride ...................7-27
Turning your ATV ................................7-39
Climbing uphill.....................................7-45
Riding downhill ....................................7-55
Crossing a slope .................................7-59
Crossing through shallow water ..........7-63
Riding over rough terrain ....................7-69
Sliding and skidding ............................7-71
67
What to do if ... ................................... 7-75
What to do ... ...................................... 7-75
PERIODIC MAINTENANCE AND
ADJUSTMENT ........................................ 8-1
Owner’s manual and tool kit ................ 8-3
Periodic maintenance/lubrication ......... 8-7
Panel removal and installation ........... 8-15
Engine oil ............................................ 8-31
Final gear oil ....................................... 8-41
Differential gear oil ............................. 8-47
Cooling system .................................. 8-53
Changing the coolant.......................... 8-57
Axle boots ........................................... 8-63
Spark plug inspection ........................ 8-65
Air filter cleaning ................................ 8-71
V-belt cooling duct check hose .......... 8-77
Carburetor adjustment ....................... 8-81
Idle speed adjustment ....................... 8-83
Valve clearance adjustment .............. 8-85
Throttle lever adjustment ................... 8-87
Front brake pad inspection ................ 8-89
Rear brake pad inspection ................. 8-89
Inspecting the brake fluid level .......... 8-91
Brake fluid replacement ...................... 8-95
Front brake adjustment ...................... 8-97
Rear brake lever adjustment ............. 8-99
8
U5GH62.book Page 2 Monday, August 6, 2001 9:09 AM

Adjusting the rear brake light switch. 8-103
Cable inspection and lubrication ..... 8-105
Brake lever and brake pedal
lubrication ...................................... 8-107
Wheel removal ................................ 8-109
Wheel installation ............................. 8-111
Battery ............................................. 8-113
Battery maintenance ....................... 8-117
Fuse replacement ............................ 8-119
Replacing the headlight bulb ........... 8-123
Headlight beam adjustment ............. 8-127
Tail/brake light bulb replacement ..... 8-129
Troubleshooting ............................... 8-133
Troubleshooting chart ...................... 8-135
CLEANING AND STORAGE .................. 9-1
A. Cleaning .......................................... 9-1
B. Storage ........................................... 9-7
SPECIFICATIONS ................................ 10-1
HOW TO USE THE CONVERSION
TABLE ................................................... 11-1
91011U5GH62.book Page 3 Monday, August 6, 2001 9:09 AM

2-5

Always inspect your ATV each time you use it
to make sure it is in safe operating condition.
Always follow the inspection and maintenance
procedures and schedules described in this
manual.


Always keep both hands on the handlebars
and both feet on the footboards of the ATV dur-
ing operation.


Always go slowly and be extra careful when op-
erating on unfamiliar terrain. Always be alert to
changing terrain conditions when operating the
ATV.


Never operate on excessively rough, slippery
or loose terrain until you have learned and
practiced the skills necessary to control the
ATV on such terrain. Always be especially cau-
tious on these kinds of terrain.


Always follow proper procedures for turning as
described in this manual. Practice turning at
low speeds before attempting to turn at faster
speeds. Do not turn at excessive speed.
U5GH62.book Page 5 Monday, August 6, 2001 9:09 AM

5-2
5
WARNING
Always inspect your ATV each time you use it to make sure the ATV is in safe operating condition.
Always follow the inspection and maintenance procedures and schedules described in the Own-
er’s Manual. Failure to inspect increases the possibility of an accident or equipment damage.U5GH62.book Page 2 Monday, August 6, 2001 9:09 AM

8-1
EBU00516
PERIODIC MAINTENANCE AND
ADJUSTMENTPeriodic inspection, adjustment and lubrication will
keep your machine in the safest and most efficient
condition possible. Safety is an obligation of the
machine owner. The most important points of ma-
chine inspection, adjustment and lubrication are
explained on the following pages.
WARNING
Never service an engine while it is running.
Moving parts can catch clothing or parts of the
body, causing injury. Electrical components
can cause shocks or can start fires. Turn off
the engine when performing maintenance un-
less otherwise specified. Have a Yamaha deal-
er perform service if you are not familiar with
machine service.
U5GH62.book Page 1 Monday, August 6, 2001 9:09 AM

8-3 1. Owner’s manual
2. Owner’s tool kit
3. Low-pressure tire gauge
1. Manuel du propriétaire
2. Trousse à outils
3. Manomètre basse pression pour pneus
1. Manual del propietario
2. Juego de herramientas
3. Manómetro de baja presión
EBU00536
Owner’s manual and tool kit
You are recommended to put this owner’s manual
in the vinyl bag and always carry it under the seat
as shown. Put the owner’s tool kit and low-pres-
sure tire gauge in the storage box.
The service information included in this manual is
intended to provide you, the owner, with the nec-
essary information for completing your own pre-
ventive maintenance and minor repairs. The tools
provided in the Owner’s tool kit are sufficient for
this purpose, except that a torque wrench is also
necessary to properly tighten nuts and bolts.NOTE:If you do not have a torque wrench available dur-
ing a service operation requiring one, take your
machine to a Yamaha dealer to check the torque
settings and adjust them as necessary.
U5GH62.book Page 3 Monday, August 6, 2001 9:09 AM

8-7
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
Valves*•Check valve clearance.
•Adjust if necessary.
Cooling system•Check coolant leakage.
•Repair if necessary.
•Replace coolant every 24 months.Spark plug•Check condition.
•Adjust gap and clean.
•Replace if necessary.Air filter•Clean.
•Replace if necessary.Every 20~40 hours
(More often in wet or dusty areas.)
Crankcase breather
system*•Check breather hose for cracks or damage.
•Replace if necessary.Exhaust system*•Check for leakage.
•Retighten if necessary.
•Replace gasket(s) if necessary.Carburetor*•Check and adjust idle speed/starter operation.
•Adjust if necessary.Fuel line*•Check fuel hose for cracks or damage.
•Replace if necessary.Engine oil
•Replace (Warm engine before draining).Engine oil filter cartridge
•Replace.Engine oil strainer*
•Clean.Final gear oil
•Check oil level/oil leakage.
•Replace every 12 months.Differential gear oil
Front brake*•Check operation/fluid leakage/see NOTE page 8-8.
•Correct if necessary.Rear brake*•Check operation/fluid leakage/see NOTE page 8-8.
•Correct if necessary.U5GH62.book Page 7 Monday, August 6, 2001 9:09 AM