2006 YAMAHA YZ450F clutch

SPEC
2 - 14 Swingarm:
Swingarm free play limit
End ---- 1.0 mm (0.04 in)
Wheel:
Front wheel type Spoke wheel ----
Rear wheel type Spoke wheel ----
Front rim size/material 21 × 1.60/Aluminum ----
Rear rim size/material 19 × 2.15/Aluminum ----
Rim runout limit:
Radial ---- 2.0 mm (0.08 in)
Lateral ---- 2.0 mm (0.08 in)
Drive chain:
Type/manufacturer DID520DMA2 SDH/DAIDO ----
Number of links 113 links + joint ----
Chain slack 48 ~ 58 mm (1.9 ~ 2.3 in) ----
Chain length (15 links) ---- 242.9 mm
(9.563 in)
Front disc brake:
Disc outside dia. × Thickness 250 × 3.0 mm (9.84 × 0.12 in) 250 × 2.5 mm
(9.84 × 0.10 in)
Pad thickness 4.4 mm (0.17 in) 1.0 mm (0.04 in)
Master cylinder inside dia. 11.0 mm (0.433 in) ----
Caliper cylinder inside dia. 27.0 mm (1.063 in) × 2 ----
Brake fluid type DOT #4 ----
Rear disc brake:
Disc outside dia. × Thickness 245 × 4.0 mm (9.65 × 0.16 in) 245 × 3.5 mm
(9.65 × 0.14 in)
Deflection limit ---- 0.15 mm (0.006 in)
Pad thickness 6.4 mm (0.25 in) 1.0 mm (0.04 in)
Master cylinder inside dia. 11.0 mm (0.433 in) ----
Caliper cylinder inside dia. 25.4 mm (1.000 in) × 1 ----
Brake fluid type DOT #4 ----
Brake lever and brake pedal:
Brake lever position 95 mm (3.74 in) ----
Brake pedal height
(vertical height above footrest top)5 mm (0.20 in) ----
Clutch lever free play (lever end) 8 ~ 13 mm (0.31 ~ 0.51 in) ----
Throttle grip free play 3 ~ 5 mm (0.12 ~ 0.20 in) ----Item Standard Limit
MAINTENANCE SPECIFICATIONS

SPEC
2 - 15
NOTE:
1. First, tighten the ring nut approximately 38 Nm (3.8 m  kg, 27 ft  lb) by using the ring nut wrench,
then loosen the ring nut one turn.
2. Retighten the ring nut 7 Nm (0.7 m  kg, 5.1 ft  lb). Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Handle crown and outer tube M8 × 1.25 4 23 2.3 17
Under bracket and outer tube M8 × 1.25 4 20 2.0 14
Handle crown and steering shaft M24 × 1.0 1 145 14.5 105
Handlebar holder (upper) M8 × 1.25 4 28 2.8 20
Handlebar holder (lower) M12 × 1.25 2 40 4.0 29
Steering ring nut M28 × 1.0 1 Refer to NOTE.
Front fork and damper assembly M51 × 1.5 2 30 3.0 22
Front fork and adjuster M22 × 1.25 2 55 5.5 40
Damper assembly and base valve M42 × 1.5 2 29 2.9 21
Adjuster and damper assembly M12 × 1.25 2 29 2.9 21
Bleed screw (front fork) and base valve M5 × 0.8 2 1 0.1 0.7
Front fork and protector M6 × 1.0 6 7 0.7 5.1
Protector and brake hose holder M6 × 1.0 2 7 0.7 5.1
Throttle cable cap M5 × 0.8 2 4 0.4 2.9
Clutch lever holder mounting M5 × 0.8 2 4 0.4 2.9
Clutch lever mounting (nut) M6 × 1.0 1 4 0.4 2.9
Hot starter lever holder mounting M5 × 0.8 2 4 0.4 2.9
Front brake master cylinder and bracket M6 × 1.0 2 9 0.9 6.5
Front brake master cylinder cap M4 × 0.7 2 2 0.2 1.4
Brake lever mounting (bolt) M6 × 1.0 1 6 0.6 4.3
Brake lever mounting (nut) M6 × 1.0 1 6 0.6 4.3
Brake lever position locknut M6 × 1.0 1 5 0.5 3.6
Cable guide (front brake hose) and under bracket M6 × 1.0 1 4 0.4 2.9
Front brake hose union bolt (master cylinder) M10 × 1.25 1 30 3.0 22
Front brake hose union bolt (caliper) M10 × 1.25 1 30 3.0 22
Front brake caliper and front fork M8 × 1.25 2 23 2.3 17
Front brake caliper and brake hose holder M6 × 1.0 1 10 1.0 7.2
Brake caliper (front and rear) and pad pin plug M10 × 1.0 2 3 0.3 2.2
Brake caliper (front and rear) and pad pin M10 × 1.0 2 18 1.8 13
Brake caliper (front and rear) and bleed screw M8 × 1.25 2 6 0.6 4.3
Front wheel axle and nut M16 × 1.5 1 105 10.5 75
Front wheel axle holder M8 × 1.25 4 23 2.3 17
Front brake disc and wheel hub M6 × 1.0 6 12 1.2 8.7
Rear brake disc and wheel hub M6 × 1.0 6 14 1.4 10
Footrest bracket and frame M10 × 1.25 4 55 5.5 40
Brake pedal mounting M8 × 1.25 1 26 2.6 19
Rear brake master cylinder and frame M6 × 1.0 2 10 1.0 7.2
Rear brake master cylinder cap M4 × 0.7 2 2 0.2 1.4
Rear brake hose union bolt (caliper) M10 × 1.25 1 30 3.0 22
Rear brake hose union bolt (master cylinder) M10 × 1.25 1 30 3.0 22
MAINTENANCE SPECIFICATIONS

2 - 21
SPECCABLE ROUTING DIAGRAM
EC240000
CABLE ROUTING DIAGRAM
1Fuel tank breather hose
2Radiator hose 1
3Cylinder head breather hose
4Hose holder
5Radiator hose 4
6Clutch cable
7Connector cover
8Fuel hose
9TPS (throttle position sensor)
lead
0Hot starter cable
ACarburetor breather hose
BCarburetor overflow hoseÈInsert the end of the fuel tank
breather hose into the hole in
the steering shaft.
ÉPass the cylinder head breather
hose on the outside of the radia-
tor hose 1 and between the radi-
ator hose 4 and frame.
ÊAlign the paint on the cylinder
head breather hose with the
front edge of the hose holder.
ËPass the clutch cable through
the cable guide.ÌPass the clutch cable in front of
the radiator mounting boss.
ÍInstall the connector cover so
that it does not come in between
the radiator hose 1 and radiator.
ÎPass the fuel hose between the
hot starter cable and TPS lead.
ÏPass the carburetor breather
hoses and overflow hose so that
all there hoses do not contact
the rear shock absorber.
B
AA
B
Ï
B
A
0
9
3
2
ÌÉ
1
È
Í
6
5
4 Ë
A
Ê8
Î
7

2 - 22
SPECCABLE ROUTING DIAGRAM
1Hot starter cable
2Clamp
3TPS (throttle position sensor)
lead
4Hump (frame)
5Neutral switch lead
6Engine bracket
7Engine skid plate stay
8CDI magneto lead
9Clutch cable
0Radiator breather hose
ARadiator hose 2
B“ENGINE STOP” button leadCSub wire harness
DGround lead
ECDI unit bracket
FCDI unit
GCable guide
HIgnition coil lead
IThrottle cable
ÈFasten the hot starter cable and
throttle cables onto the frame.
Locate the clamp ends under
the hot starter cable.ÉFasten the hot starter cable,
throttle cables, TPS lead and
ignition coil lead to the frame.
ÊFasten the TPS lead to the
frame behind its hump.
ËPass the TPS lead over the hot
starter cable.
ÌPass the neutral switch lead on
the inside of the engine bracket.
ÍPass the neutral switch lead
over the engine skid plate stay.
C-C
G-G
E
2
Õ
4 58E
É
D GGA
AB
D
5
ÌÍ Í
Í Î
F
E
D
2
2
2
Ï Ð Ò
Ñ Ó
1
G
2
3
4 2
0
8
5
9
8Ë Ê
0
0 8 5
CC
B
È 2
9
FF
Ô
Ô
B-B
A-A
I
H
3
1
C
B
A
0
0
8
5
D-D
3 F-F
6
7
2 5 0

2 - 23
SPECCABLE ROUTING DIAGRAM
ÎFasten the neutral switch lead
and radiator breather hose to
the frame.
ÏFasten the neutral switch lead,
CDI magneto lead and radiator
breather hose to the frame.
ÐFasten the neutral switch lead,
CDI magneto lead, radiator
breather hose and clutch cable
to the frame over the radiator
mounting boss.ÑPass the radiator breather hose
in front of the radiator hose 2, on
the left of the chassis, and then
between the frame and radiator
hose 4.
ÒFasten the sub wire harness and
“ENGINE STOP” button lead to
the CDI unit bracket with the
clamp ends facing downward
behind the location where the
ground lead branches out from
the sub wire harness.ÓFasten the ground lead and
cable guide together to the CDI
unit bracket.
ÔLocate the clamp ends in the
arrowed range.
ÕFasten the neutral switch lead
and CDI magneto lead to the
frame over its hump.
C-C
G-G
E
2
Õ
4 58E
É
D GGA
AB
D
5
ÌÍ Í
Í Î
F
E
D
2
2
2
Ï Ð Ò
Ñ Ó
1
G
2
3
4 2
0
8
5
9
8Ë Ê
0
0 8 5
CC
B
È 2
9
FF
Ô
Ô
B-B
A-A
I
H
3
1
C
B
A
0
0
8
5
D-D
3 F-F
6
7
2 5 0

2 - 26
SPECCABLE ROUTING DIAGRAM
1Throttle cable
2Clamp
3Hot starter cable
4Clutch cable
5“ENGINE STOP” button lead
6Cable guide
7Brake hose
8Hose guideÈFasten the “ENGINE STOP” button lead to the
handlebar.
ÉPass the clutch cable and hot starter cable
through the cable guide.
ÊPass the brake hose in front of the number plate.
ËPass the throttle cables through the cable guide.
ÌPass the clutch cable and hot starter cable
through the cable guide on the number plate.
A
B
C
A
B
C40˚± 10˚
40˚± 10˚
2
È3
2
5
4
2
3
5
6
Ë1
4
5
7
Ê
6
É
Ì
8

3 - 1
INSP
ADJ
MAINTENANCE INTERVALS
EC300000
REGULAR INSPECTION AND ADJUSTMENTS
MAINTENANCE INTERVALS
The following schedule is intended as a general guide to maintenance and lubrication. Bear in mind
that such factors as weather, terrain, geographical location, and individual usage will alter the
required maintenance and lubrication intervals. If you are a doubt as to what intervals to follow in
maintaining and lubricating your machine, consult your Yamaha dealer.
ItemAfter
break-inEvery
race
Every
third
(or
500 km)Every
fifth
(or
1,000 km)As re-
quiredRemarks
ENGINE OIL
Replace
VALVES
The engine must be cold.
Check the valve seats
and valve stems for wear. Check the valve clearances
Inspect
Replace
VALVE SPRINGS
Check the free length and
the tilt. Inspect
Replace
VALVE LIFTERS
Check for scratches and
wear. Inspect
Replace
CAMSHAFTS Inspect the camshaft sur-
face.
Inspect the decompres-
sion system Inspect
Replace
CAMSHAFT SPROCKETS
Check for wear on the
teeth and for damage. Inspect
Replace
PISTON
Inspect crack
Inspect carbon deposits
and eliminate them. Inspect
Clean
Replace
PISTON RING
Check ring end gap Inspect
Replace
PISTON PIN
Inspect
Replace
CYLINDER HEAD Inspect carbon deposits
and eliminate them.
Change gasket Inspect and clean
CYLINDER
Inspect and clean
Inspect score marks
Inspect wear
Replace
CLUTCH
Inspect housing, friction
plate, clutch plate and
spring Inspect and adjust
Replace
TRANSMISSION
Inspect
Replace bearing

3 - 3
INSP
ADJ
MAINTENANCE INTERVALS
FRONT FORK OIL SEAL AND DUST
SEAL
Clean and lube Lithium base grease
PROTECTOR GUIDE
Replace
REAR SHOCK ABSORBER
(After
rain ride)
Inspect and adjust
LubeMolybdenum disulfide
grease
Replace spring seat Every one year
Retighten
CHAIN GUARD AND ROLLERS
Inspect
SWINGARM
Molybdenum disulfide
grease
Inspect, lube and retighten
RELAY ARM, CONNECTING ROD
Molybdenum disulfide
grease
Inspect, lube and retighten
STEERING HEAD
Inspect free play and retighten
Clean and lube Lithium base grease
Replace bearing
TIRE, WHEELS
Inspect air pressure, wheel run-out,
tire wear and spoke looseness
Retighten sprocket bolt
Inspect bearings
Replace bearings
Lubricate Lithium base grease
THROTTLE, CONTROL CABLE
Yamaha cable lube or
SAE 10W-30 motor oil Check routing and connection
Lubricate
HOT STARTER, CLUTCH LEVER
Inspect free playItemAfter
break-inEvery
race
Every
third
(or
500 km)Every
fifth
(or
1,000 km)As re-
quiredRemarks