2014 YAMAHA YZ450F clutch

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Page 13 of 360

YAMAHA YZ450F 2014  Owners Manual 1
GENERAL INFORMATION
LOCATION OF IMPORTANT LABELS............................................................ 1-1
DESCRIPTION .........................................................................

Page 18 of 360

YAMAHA YZ450F 2014  Owners Manual DESCRIPTION
1-4
EAS1SL1009
DESCRIPTION
TIP
Designs and specifications of the vehicle are subject to change without notice. Therefore, please 
note that the descriptions in this manual may be different

Page 32 of 360

YAMAHA YZ450F 2014  Owners Manual SPECIAL TOOLS
1-18
Spacer (crankshaft installer)
90890-04081
Pot spacer
YM-91044
This tool is used to install the 
crankshaft.
Clutch holder
90890-04086
YM-91042
This tool is used to hold the 
clutch

Page 34 of 360

YAMAHA YZ450F 2014  Owners Manual CONTROL FUNCTIONS
1-20
EAS1SL1032
CONTROL FUNCTIONS
EAS1SL1033ENGINE STOP SWITCH
The engine stop switch “1” is located on the left 
handlebar. Continue pushing the engine stop 
switch till the eng

Page 49 of 360

YAMAHA YZ450F 2014  Owners Manual ENGINE SPECIFICATIONS
2-6
Oil ring
Dimensions (B  T) 1.50  2.55 mm (0.06  0.10 in)
End gap (installed) 0.20–0.50 mm (0.0079–0.0197 in)
Crankshaft
Width A 61.95–62.00 mm (2.439–2.441 i

Page 58 of 360

YAMAHA YZ450F 2014  Owners Manual TIGHTENING TORQUES
2-15
Air filter boltM6 1 2.0 Nm (0.20 m·kgf, 1.4 ft·lbf)
Air filter case cover bolt M6 3 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Air filter guide holder screw M5 8 2.5 Nm (0.25 m·kgf, 1.8

Page 61 of 360

YAMAHA YZ450F 2014  Owners Manual TIGHTENING TORQUES
2-18
CHASSIS TIGHTENING TORQUES
TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
ITEMThread 
sizeQ’tyTIGHTENING TORQUESRemarks
Outer

Page 64 of 360

YAMAHA YZ450F 2014  Owners Manual LUBRICATION POINTS AND LUBRICANT TYPES
2-21
EAS1SL1059
LUBRICATION POINTS AND LUBRICANT TYPES
EAS1SL1060ENGINE
Lubrication pointLubricant types
Oil seal lips
Bearing
O-ring
Cylinder head bolt threads,
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