2006 YAMAHA YFZ450 air filter

Lights ................................................ 5-29
Switches ........................................... 5-29
OPERATION ........................................ 6-1
Starting a cold engine ......................... 6-3
Starting a warm engine ...................... 6-9
Warming up ........................................ 6-9
Shifting ............................................. 6-11
To start out and accelerate ............... 6-13
To decelerate ................................... 6-17
Engine break-in ................................ 6-19
Parking ............................................. 6-23
Parking on a slope ............................ 6-25
Accessories and loading .................. 6-29
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 ...................... 7-41CLIMBING UPHILL .......................... 7-47
RIDING DOWNHILL ......................... 7-57
CROSSING A SLOPE .......................7-61
CROSSING THROUGH SHALLOW
WATER .......................................... 7-65
RIDING OVER ROUGH TERRAIN ....7-69
SLIDING AND SKIDDING .................7-71
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 ......... 8-19
Engine oil and oil filter element ........ 8-25
Cooling system ................................. 8-43
Changing the coolant ....................... 8-47
Spark plug inspection ....................... 8-55
Air filter element cleaning ................. 8-67
6
7
8
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4-41
Adjust the spring preload as follows.
1. Remove the seat. (See page 4-27 for seat
removal and installation procedures.)
2. Loosen the clamp screw at the carburetor
side, and then disconnect the air intake
duct.
3. Disconnect the hose, and then remove the
air filter case by removing the bolts.
1. Clamp screw1.Vis de collier1. Tornillo de la abrazadera
1. Hose
1.Durit1. Manguera
5TG-9-63 4 9/16/05 4:29 PM Page 4-41

4-43
4. Loosen the locknut.
5. Turn the adjusting nut in direction ato
increase the spring preload and in direction
bto decrease the spring preload.
NOTE:
A special wrench can be obtained at a Yamaha
dealer to make this adjustment.
6. The length of the spring (installed)
changes 1.5 mm per turn of the adjusting
nut.
1. Bolt (×3) 2. Air filter case1.Boulon (×3) 2.Boîtier de filtre à air1. Perno (×3) 2. Caja del filtro de aire
1. Locknut 2. Spring preload adjusting nut
3. Special wrench
1.Contre-écrou 2.Écrou de réglage de la
précontrainte du ressort
3.Clé spéciale
1. Contratuerca 2. Tuerca de ajuste de la
precarga del muelle
3. Llave especial
5TG-9-63 4 9/16/05 4:29 PM Page 4-43

4-45
A. Spring lengthA.Longueur du ressortA. Longitud del resorte
7. Tighten the locknut to the specified torque.
cC
Always tighten the locknut against the
adjusting nut, and then tighten it to the spec-
ified torque.
8. Place the air filter case in the original posi-
tion, connect the air intake duct, and then
tighten the clamp screw at the carburetor
side.
9. Install the bolts, and then connect the
hose.
10. Install the seat.Measurement A:
Installed length:
Minimum (hard): 250 mm
Standard: 257 mm
Maximum (soft): 264 mm
Tightening torque:
Locknut:
45 Nm (4.5 m0kgf)
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7-67
Test your brakes after leaving the water. Do not
continue to ride your ATV without verifying that
you have regained proper braking ability.
cC
After riding your ATV in water, be sure to
drain the trapped water by removing the
check hose at the bottom of the air filter
case. Wash the ATV in fresh water if it has
been operated in salt water or muddy condi-
tions.
1. Check hose1. Flexible de contrôle1. Manguito de retención
5TG-9-63 7 9/16/05 4:32 PM Page 210

8-8
INITIAL EVERY
month 1 3 6 6 12
ITEM ROUTINEWhichever
km 320 1200 2400 2400 4800 comes first
(mi) (200) (750) (1500) (1500) (3000)
hours 20 75 150 150 300
Air filter element9Clean. Every 20–40 hours
9Replace if necessary. (more often in wet or dusty areas)
Clutch*9Check operation.
2222
9Adjust if necessary.
9Check free play/operation/fluid leakage/
Front brake*See NOTE Page 8-10.22222
9Correct if necessary.
9Check operation/fluid leakage/
Rear brake*See NOTE Page 8-10.22222
9Correct if necessary.
Wheels*9Check balance/damage/runout.
2222
9Replace if necessary.
Wheel bearings*9Check bearing assemblies for looseness/damage.
2222
9Replace if damaged.
Rear arm pivot*9Lubricate with lithium-soap-based grease.222
Upper and lower arm
pivot and steering 9Lubricate with lithium-soap-based grease.222
shaft*
Drive chain9Check and adjust slack/alignment/clean/lube.22222
Fittings and fasteners*9Check all chassis fittings and fasteners.
22222
9Correct if necessary.
Front and rear9Check operation.
22
suspension*9Correct if necessary.
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8-9
INITIAL EVERY
month 1 3 6 6 12
ITEM ROUTINEWhichever
km 320 1200 2400 2400 4800 comes first
(mi) (200) (750) (1500) (1500) (3000)
hours 20 75 150 150 300
9Check operation.
Steering system*9Repair if damaged.
22222
9Check toe-in.
9Adjust if necessary.
Engine oil9Replace (Warm engine before draining).2 222
Engine oil filter
9Replace.222
element
9Check coolant leakage.
Cooling system9Repair if necessary.22222
9Replace coolant every 24 months.
9Check operation.
Lights and switches*
9
Adjust headlight beams.22222
5TG-9-63 8 10/26/05 4:54 PM Page 8-9

8-67
EBU14151
Air filter element cleaning
NOTE:
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 element
and air filter case.
1. Remove the seat. (See page 4-27 for seat
removal and installation procedures.)
2. Remove the air filter case cover by
unhooking the holders.1. Check hose1. Flexible de contrôle1. Manguito de comprobación
1. Air filter case cover 2. Holder (×3)
1. Cache du boîtier de filtre à air 2.Support (×3)1. Tapa de la caja del filtro de aire 2Soporte (×3)
5TG-9-63 8 10/26/05 4:54 PM Page 8-67