clutch YAMAHA YFZ450 2006 User Guide

6-13
EBU14260
To start out and accelerate:
1. Release the throttle lever, and then release
the parking brake.
cC
Always close the throttle while shifting
gears. Otherwise, damage to the engine and
drive train may result.
2. Pull the clutch lever to disengage the
clutch.
3. Shift into first gear.
4. Open the throttle gradually and at the
same time, release the clutch lever slowly.
5. Once the machine has attained adequate
speed, release the throttle, and at the
same time, quickly pull in the clutch lever.
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6-15
6. Shift into second gear (be careful not to
shift into neutral).
7. Open the throttle part way and gradually
release the clutch lever.
8. Follow the same procedure when shifting
to the next higher gear.
w
Opening the throttle abruptly or releasing the
clutch lever too quickly would increase the
chance of an accident or could make the
machine wheelie including overturn. Always
open the throttle gradually and release the
clutch lever gradually.
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6-25
EBU14270
Parking on a slope
w
Avoid 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, put the machine in low gear, apply
the parking brake, and 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 machine to a stop by applying
the front brake.
2. With the front and rear brake applied, pull
the clutch lever, shift into the neutral posi-
tion, and then apply the parking brake.
3. Stop the engine by setting the engine stop
switch to “OFF”.
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6-27
4. With the front and rear brakes applied, pull
the clutch lever, shift into 1st gear, and
then slowly release the clutch lever, brake
lever and brake pedal.
NOTE:
Make sure that the neutral indicator light goes
off.
5. Turn the key to “OFF”.
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7-37
With the engine idling, pull the clutch lever to
disengage the clutch and shift into 1st gear, and
then release the parking brake. Open the throttle
gradually, and at the same time, release the
clutch lever slowly. Once the ATV has attained
adequate speed, release the throttle lever and at
the same time, quickly pull in the clutch lever
and shift into 2nd gear. Open the throttle part
way and gradually release the clutch. Use this
same procedure as you move into the higher
gears. Be sure to coordinate the use of the throt-
tle and shift pedal properly. If the throttle is
applied too abruptly or if the throttle is not
released during shifting, or if the shift pedal is
not released before applying the throttle, the
front wheels may lift off the ground resulting in a
loss of directional control. Avoid higher speeds
until you are thoroughly familiar with the opera-
tion of your ATV.
w
Always open the throttle gradually and
release the clutch lever slowly. Otherwise,
the ATV could wheelie which would increase
the chance of an accident.
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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.
5TG-9-62 8 5/13/05 1:48 PM Page 8-8

8-39
cC
8In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives. Do not
use oils with a diesel specification of “CD”
or oils of a higher quality than specified. In
addition, do not use oils labeled “ENERGY
CONSERVING II” or higher.
8Make sure that no foreign material enters
the crankcase.
14. Start the engine, and then let it idle for sev-
eral minutes while checking it for oil leak-
age. If oil is leaking, immediately turn the
engine off and check for the cause.
15. Turn the engine off, and then check the oil
level and correct it if necessary.
16. Install the engine guard by installing the
bolts, and then tighten them to the speci-
fied torque.
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8-103
EBU14210
Clutch lever free play adjustment
The clutch lever free play should be adjusted to
8–13 mm.
1. Fully turn the adjusting nut at the clutch
lever in direction ato increase the free
play or in direction bto decrease the free
play.
If the specified free play cannot be obtained,
proceed with the following steps.
2. Turn the adjusting nut at the clutch lever in
direction ato loosen the cable.
3. Loosen the locknut at the crankcase side.
4. Turn the adjusting nut at the crankcase in
direction ato increase the free play or in
direction bto decrease the free play.
5. Tighten the locknut at the crankcase side.
1. Adjusting nut c. Cluch lever free play1. Écrou de réglage c. Jeu du levier d’embrayage1. Tuerca de ajuste
c. Juego libre de la palanca del embrague
1. Locknut 2. Adjusting nut
1. Contre-écrou 2. Écrou de réglage1. Tuerca de bloqueo 2. Tuerca de adjuste
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8-117
EBU14020
Brake pedal, brake lever and clutch lever
lubrication
Lubricate the pivoting parts.
Recommended lubricant:
Lithium-soap-based grease (all-purpose
grease)
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10-2
ModelYFZ450V
Engine oil:
Type
Recommended engine oil classification: API Service SE, SF, SG type or higher
cC
In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not mix
any chemical additives. Do not use oils with a
diesel specification of “CD” or oils of a higher
quality than specified. In addition, do not use oils
labeled “ENERGY CONSERVING
II” or higher.
Quantity:
Without oil filter element replacement 1.75 L
With oil filter element replacement 1.85 L
–20° 10° 20° 30° 40°
10W30
10W40
20W40
20W5050°C
0° –10°
5W30
15W40
10
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