2003 YAMAHA KODIAK 400 brake fluid

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
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
What to do if ........................................7-75
What to do...........................................7-75
67
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 ............................................ 8-29
Final gear oil ....................................... 8-39
Differential gear oil replacement ......... 8-45
Cooling system ................................... 8-51
Changing the coolant.......................... 8-55
Axle boots ........................................... 8-61
Spark plug inspection ......................... 8-63
Air filter element cleaning ................... 8-69
V-belt cooling duct check hose ........... 8-77
Carburetor adjustment ........................ 8-79
Idle speed adjustment ........................ 8-81
Valve clearance adjustment ............... 8-83
Throttle lever adjustment .................... 8-85
Front brake pad inspection ................. 8-87
Rear brake shoe inspection ................ 8-87
Brake fluid level check ........................ 8-89
Brake fluid replacement ...................... 8-93
Front brake lever free play.................. 8-95
Rear brake pedal and lever
adjustment ........................................ 8-97
Adjusting the rear brake light
switch ............................................. 8-103
8
U5TE60.book Page 2 Monday, June 10, 2002 8:47 AM

5-1
EBU00113
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
BrakesCheck operation, free play, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-5–5-7,
8-87–8-103
FuelCheck fuel level.
Fill with fuel if necessary.5-9–5-11
Engine oilCheck oil level.
Fill with oil if necessary.5-13–5-15,
8-29–8-39
CoolantCheck coolant level in reservoir.
Fill with coolant if necessary.8-51–8-61
Final gear oil and
differential gear oilCheck for leakage. 5-17–5-19, 8-39–8-49
ThrottleCheck for proper throttle cable operation. 5-21, 8-85
Wheels and tiresCheck tire pressure, wear and damage.5-25–5-31,
8-109–8-111
Fittings and fastenersCheck all fittings and fasteners. 5-23
LightsCheck for proper operation. 5-23, 8-123–8-127
Axle bootsCheck for damage. 8-61
U5TE60.book Page 1 Monday, June 10, 2002 8:47 AM

5-5
EBU01276
Front and rear brakes
Brake levers and brake pedal

Check that there is no free play in the front
brake lever. If there is free play, have a
Yamaha dealer adjust it.


Check for correct free play in the rear brake le-
ver. If the free play is incorrect, adjust it.


Check for correct brake pedal height. If the
pedal height is incorrect, have a Yamaha deal-
er adjust it.


Check the operation of the brake levers and
pedal. They should move smoothly and there
should be a firm feeling when the brakes are
applied. If not, have a Yamaha dealer inspect
the brake system.
Brake fluid level
Check the brake fluid level. Add fluid if necessary.
(See pages 8-89–8-93.)
Recommended brake fluid: DOT 4
U5TE60.book Page 5 Monday, June 10, 2002 8:47 AM

5-7
Brake fluid leakage
Check to see if any brake fluid is leaking out of the
pipe joints or brake fluid reservoirs. Apply the
brakes firmly for one minute. If there is any leak-
age, the brake system should be inspected by a
Yamaha dealer.
Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance, in-
spect the brake pads for wear. (See page 8-87.)
WARNING
_ Always check the brakes at the start of every
ride. Do not ride the ATV if you find any prob-
lem with the brakes or you could lose braking
ability, which could lead to an accident. If a
problem cannot be corrected by the adjust-
ment procedures provided in this manual,
have a Yamaha dealer check for the cause. _
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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 element•Clean.
•Replace if necessary.Every 20–40 hours
(More often in wet or dusty areas.)
Carburetor*•Check and adjust idle speed/starter operation.
•Adjust if necessary.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.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.
•Adjust if necessary.U5TE60.book Page 7 Monday, June 10, 2002 8:47 AM

8-8
* It is recommended that these items be serviced by a Yamaha dealer.NOTE:Recommended brake fluid: DOT 4
Brake fluid replacement:
1. When disassembling the master cylinder or caliper, replace the brake fluid. Normally check the brake
fluid level and add fluid as required.
2. On the inner parts of the master cylinder and caliper, replace the oil seals every two years.
3. Replace the brake hoses every four years, or if cracked or damaged.V-belt*•Check operation.
•Check for cracks or damage.Wheels*•Check balance/damage/runout.
•Repair if necessary.Wheel bearing*•Check bearing assemblies for looseness/damage.
•Replace if damaged.Front and rear
suspension*•Check operation.
•Correct if necessary.Steering system*•Check operation./Replace if damaged.
•Check toe-in./Adjust if necessary.Axle boots*•Check operation.
•Replace if damaged.Fittings and Fasteners*•Check all chassis fittings and fasteners.
•Correct if necessary.
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
U5TE60.book Page 8 Monday, June 10, 2002 8:47 AM

8-89 1. Minimum level mark
1. Repère de niveau minimum
1. Marca de nivel mínimo
FRONT
Avant
Delantero
EBU01185
Brake fluid level check
Insufficient brake fluid may let air enter the brake
system, possibly causing the brakes to become in-
effective.
Before riding, check that the brake fluid is above
the minimum level mark and replenish if neces-
sary. A low brake fluid level may indicate worn
brake pads and/or brake system leakage. If the
brake fluid level is low, be sure to check the brake
pads for wear and the brake system for leakage.
Observe these precautions:

When checking the fluid level, make sure the
top of the brake fluid reservoir is level by turn-
ing the handlebars.


Use only the designated quality brake fluid.
Otherwise, the rubber seals may deteriorate,
causing leakage and poor brake performance.
Recommended brake fluid: DOT 4
U5TE60.book Page 89 Monday, June 10, 2002 8:47 AM

8-91

Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor brake performance.


Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and
may result in vapor lock.


Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately.


Have a Yamaha dealer check the cause if the
brake fluid level goes down.
U5TE60.book Page 91 Monday, June 10, 2002 8:47 AM