2008 YAMAHA WR 450F diagram

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Page 8 of 224

YAMAHA WR 450F 2008  Owners Manual HOW TO READ DESCRIPTIONS
To help identify parts and clarify pro-
cedure steps, there are exploded dia-
grams at the start of each removal 
and disassembly section.
1. An easy-to-see exploded diagram

Page 10 of 224

YAMAHA WR 450F 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

Page 22 of 224

YAMAHA WR 450F 2008  Owners Manual 1-12
MULTI-FUNCTION DISPLAY
FUNCTION DIAGRAM
A short push on the button changes 
the operation in the arrowed direction.
A short push on the button changes 
the operation in both arrowed directions.
A

Page 23 of 224

YAMAHA WR 450F 2008  Owners Manual 1-13
MULTI-FUNCTION DISPLAY
The following diagram illustrates the 
multi-function display regarding the 
direction and operation condition in-
volved in each of its functions.
A. A short push on the b

Page 46 of 224

YAMAHA WR 450F 2008  Owners Manual 2-19
LUBRICATION DIAGRAMS
LUBRICATION DIAGRAMS
1. Oil filter element
2. Oil pump
3. Drive axle
4. Main axle
5. Crankshaft
6. Connecting rod
A. From cylinder
B. To oil tank

Page 47 of 224

YAMAHA WR 450F 2008  Owners Manual 2-20
LUBRICATION DIAGRAMS
1. Intake camshaft
2. Exhaust camshaft
A. To main axle
B. From oil pump

Page 48 of 224

YAMAHA WR 450F 2008  Owners Manual 2-21
CABLE ROUTING DIAGRAM
CABLE ROUTING DIAGRAM
1. Fuel tank breather hose
2. Clamp
3. Diode
4. Hot starter cable
5. Throttle position sensor lead
6. Wire harness
7. Hump (frame)
8. Negative battery

Page 49 of 224

YAMAHA WR 450F 2008  Owners Manual 2-22
CABLE ROUTING DIAGRAM
C. Fasten the diode (at the mark-
ing), throttle cable and hot start-
er cable onto the frame. Locate 
the clamp end facing toward the 
lower right of the frame and with 
th
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