2003 YAMAHA YZ450F diagram

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Page 14 of 644

YAMAHA YZ450F 2003  Owners Manual  
EC083000 
MANUAL FORMAT 
All of the procedures in this manual are organized in a sequential, step-by-step format. The informa-
tion has been complied to provide the mechanic with an easy to read, ha

Page 15 of 644

YAMAHA YZ450F 2003  Owners Manual  
AUFBAU 
Diese Anleitung wurde zusammengestellt, um
dem Benutzer ein leicht verständliches Nach-
schlagewerk in die Hand zu geben, in dem alle
dargestellten Arbeitsvorgänge (Ein- und Aus-
bau, Zerl

Page 16 of 644

YAMAHA YZ450F 2003  Owners Manual  
ILLUSTRATED SYMBOLS 
(Refer to the illustration) 
Illustrated symbols   
1  
 to   
7  
 are designed as
thumb tabs to indicate the chapter’s number
and content. 
1  
General information  
2  
Spe

Page 20 of 644

YAMAHA YZ450F 2003  Owners Manual  
EC0A0000 
CONTENTS
CHAPTER 1
GENERAL INFORMATION 
DESCRIPTION   
...........................................1-1  
MACHINE IDENTIFICATION   
.....................1-2  
IMPORTANT INFORMATION   
......

Page 24 of 644

YAMAHA YZ450F 2003  Owners Manual  
CHAPTER 6
ELECTRICAL 
ELECTRICAL COMPONENTS 
AND WIRING DIAGRAM  
...........................6-1  
MAP-CONTROLLED CDI UNIT  
.................6-2  
IGNITION SYSTEM  
................................

Page 58 of 644

YAMAHA YZ450F 2003  Owners Manual 1 - 15
GEN
INFO
DECOMPRESSION LEVER
3. Install:
Decompression lever 1
Boot 2
Decompression lever holder (upper) 3
Collar 4
Screw 5
Nut 6
NOTE:
Install the collar with its thread portion a fac-
i

Page 107 of 644

YAMAHA YZ450F 2003  Owners Manual  
2 - 10 
CARACTERISTIQUES D’ENTRETIEN
SPEC
 
Article Standard
Diagramme de graissage:
Graissage sous pression
Barbotage
Crépine à huile
Carter d’huile
Rotor de pompe à huile 1
Rotor de pompe

Page 134 of 644

YAMAHA YZ450F 2003  Owners Manual  
2 - 19
SPEC
 
LUBRICATION DIAGRAMS
LUBRICATION DIAGRAMS 
1 
Oil delivery pipe 
2 
Intake camshaft 
3 
Exhaust camshaft 
4 
Oil cleaner element 
5 
Oil pump 
6 
Main axle 
7 
Drive axle
7
6
543 2
14
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