2008 YAMAHA YZ450F ABS

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Page 10 of 188

YAMAHA YZ450F 2008  Owners Manual CONTENTS
CHAPTER 1
GENERAL INFOR-
MATION
DESCRIPTION ................. 1-1
MACHINE
 IDENTIFICATION ............ 1-2
INCLUDED PARTS .......... 1-2
IMPORTANT 
INFORMATION................. 1-2
CHECKING O

Page 21 of 188

YAMAHA YZ450F 2008  Owners Manual 1-11
TORQUE-CHECK POINTS
TORQUE-CHECK POINTS
Concerning the tightening torque, refer to "TIGHTENING TORQUES" section in the CHAPTER 2.
Frame construction Frame to rear frame
Combined seat and fuel tan

Page 24 of 188

YAMAHA YZ450F 2008  Owners Manual 2-2
GENERAL SPECIFICATIONS
Fuel:
Type Premium unleaded gasoline only with a research octane 
number of 95 or higher.
Tank capacity 7.0 L (1.54 Imp gal, 1.85 US gal)
Carburetor:
Type FCR-MX39
Manufactu

Page 30 of 188

YAMAHA YZ450F 2008  Owners Manual 2-8
MAINTENANCE SPECIFICATIONS
CHASSISSide clearance 0.09–0.17 mm (0.0035–0.0067 in) 0.24 mm (0.009 
in)
Housing and rotor clearance 0.03–0.10 mm (0.0012–0.0039 in) 0.17 mm (0.007 
in)
Bypass

Page 35 of 188

YAMAHA YZ450F 2008  Owners Manual 2-13
TIGHTENING TORQUES
△Front wheel axle and axle nut M16 × 1.5 1 105 10.5 75
△Front wheel axle holder M8 × 1.25 4 21 2.1 15
△Front brake disc and wheel hub M6 × 1.0 6 12 1.2 8.7
△Rear bra

Page 41 of 188

YAMAHA YZ450F 2008  Owners Manual 2-19
CABLE ROUTING DIAGRAM
E. Pass the clutch cable in front of 
the radiator mounting boss.
F. Install the connector cover so 
that it does not come in between 
the radiator hose 1 and radiator.
G. P

Page 45 of 188

YAMAHA YZ450F 2008  Owners Manual 2-23
CABLE ROUTING DIAGRAM
1. Brake master cylinder
2. Brake hose holder
3. Brake hose
A. Install the brake hose so that its 
pipe portion directs as shown 
and lightly touches the projec-
tion on the

Page 49 of 188

YAMAHA YZ450F 2008  Owners Manual 3-3
MAINTENANCE INTERVALS
Lubricate pivot point●●
Check brake disc surface●●
Check fluid level and leakage●●
Retighten brake disc bolts, cali-
per bolts, master cylinder bolts 
and union b
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