2015 YAMAHA YZ450F coolant temperature

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Page 20 of 360

YAMAHA YZ450F 2015  Owners Manual FEATURES
1-6
EAS20170
FEATURES
EAS1SL5014OUTLINE OF THE FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the opti-
mum air-fuel ratio in accordance w

Page 21 of 360

YAMAHA YZ450F 2015  Owners Manual FEATURES
1-7
EAS1SL5015FI SYSTEM
The fuel pump delivers fuel to the fuel injector via the fuel filter. The pressure regulator maintains the 
fuel pressure that is applied to the fuel injector at only

Page 50 of 360

YAMAHA YZ450F 2015  Owners Manual ENGINE SPECIFICATIONS
2-7
Shifting mechanism
Shift mechanism type Shift drum and guide bar
Shift fork guide bar bending limit 0.050 mm (0.0020 in)
Shift fork thickness 4.85 mm (0.1909 in)
Decompressio

Page 59 of 360

YAMAHA YZ450F 2015  Owners Manual TIGHTENING TORQUES
2-16
Primary drive gear nut
M20 1 100 Nm (10 m·kgf, 72 ft·lbf)
Clutch spring bolt
M6 6 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Clutch boss nut
M20 1 75 Nm (7.5 m·kgf, 54 ft·lbf)
Drive s

Page 79 of 360

YAMAHA YZ450F 2015  Owners Manual CABLE ROUTING DIAGRAM
2-36
1. Bracket
2. Condenser
3. Coolant temperature sensor
4. Coupler cover
5. Intake air temperature sensor coupler
6. Intake air temperature sensor coupler
7. Radiator hoses
8.

Page 198 of 360

YAMAHA YZ450F 2015  Owners Manual ENGINE REMOVAL
5-3
Removing the electronic parts
Order Part name Q’ty Remarks
Use a suitable stand to raise the front wheel 
off the ground.
Seat Refer to “GENERAL CHASSIS” on page 4-1.
Side cov

Page 214 of 360

YAMAHA YZ450F 2015  Owners Manual CYLINDER HEAD
5-19
EAS1SL5215
CYLINDER HEAD
Removing the cylinder head
Order Part name Q’ty Remarks
Seat Refer to “GENERAL CHASSIS” on page 4-1.
Side cover (left/right) Refer to “GENERAL CHASS

Page 273 of 360

YAMAHA YZ450F 2015  Owners Manual RADIATOR
6-2
4 Radiator hose 2 1
5 Radiator hose 3 1
6 Radiator hose 4 1
7 Radiator pipe 2 1
8 Radiator breather hose 1
9 Left radiator 1
10 Radiator hose 1 1
11 Radiator pipe 1 1
12 Coolant temperatu
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