2007 YAMAHA WR 450F lock

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Page 434 of 794

YAMAHA WR 450F 2007  Owners Manual 4 - 57
ENGCLUTCH
3. Bend the lock washer 1 tab.
4. Install:
Friction plate 1 
Clutch plate 1 
[t = 2.0 mm (0.079 in)] 2 
Clutch plate 2 
[t = 1.6 mm (0.063 in)] 3 
NOTE:
Install the clutch plates

Page 452 of 794

YAMAHA WR 450F 2007  Owners Manual 4 - 66
ENGBALANCER
BALANCER
BALANCER
Extent of removal:
1 Balancer drive gear
2 Balancer
Extent of removal Order Part name Q’ty Remarks
BALANCER REMOVAL
Preparation for removal Clutch housing Refer

Page 454 of 794

YAMAHA WR 450F 2007  Owners Manual 4 - 67
ENGBALANCER
Extent of removal:
1 Balancer drive gear
2 Balancer
Extent of removal Order Part name Q’ty Remarks
7 Conical washer 1
8 Primary drive gear 1
9 Balancer drive gear 1
10 Lock washer

Page 456 of 794

YAMAHA WR 450F 2007  Owners Manual 4 - 68
ENGBALANCER
REMOVAL POINTS
Balancer, balancer drive gear and balancer 
driven gear
1. Straighten the lock washer tab.
2. Loosen:
Nut (balancer) 1 
Nut (primary drive gear) 2 
Nut (balancer d

Page 457 of 794

YAMAHA WR 450F 2007  Owners Manual ENG
4 - 68
DEMONTAGE-EINZELHEITEN
Ausgleichsvorrichtung, -Antriebs-
ritzel und -rad
1. Die Lasche der Sicherungs-
scheibe umbiegen.
2. Lockern:
Ausgleichswellen-Mutter 
1 
Mutter (Primärantriebsrit

Page 458 of 794

YAMAHA WR 450F 2007  Owners Manual 4 - 69
ENGBALANCER
ASSEMBLY AND INSTALLATION
Balancer, balancer drive gear and balancer 
driven gear
1. Install:
Balancer driven gear 1 
NOTE:
Install the balancer driven gear and balancer
shaft with

Page 472 of 794

YAMAHA WR 450F 2007  Owners Manual 4 - 76
ENGKICK AXLE AND SHIFT SHAFT
REMOVAL POINTS
EC4B3101
Kick axle assembly
1. Remove:
Kick axle assembly 1 
NOTE:
Unhook the torsion spring 2 from the hole a
in the crankcase.
EC4C3101
Shift guid

Page 473 of 794

YAMAHA WR 450F 2007  Owners Manual ENG
4 - 76
DEMONTAGE-EINZELHEITEN
Kickhebelwelle komplett
1. Demontieren:
Kickhebelwelle komplett 
1 
HINWEIS:
Die Torsionsfeder 
2 aus der Boh-
rung 
a im Kurbelgehäuse lösen.
Schaltführung und S