2005 YAMAHA WR 450F lock

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Page 351 of 758

YAMAHA WR 450F 2005  Owners Manual ENG
4 - 25
DEMONTAGE-EINZELHEITEN
Nockenwelle
1. Demontieren:
Rotor-Abdeckschraube 
1 
Kurbelwellen-Abdeck-
schraube 
2 
2. Ausrichten:
I-Markierung
(auf die Gegenmarkierung)
Arbeitsvorgang:
Die K

Page 356 of 758

YAMAHA WR 450F 2005  Owners Manual 4 - 28
ENGCAMSHAFTS
Decompression system
1. Check:
Decompression system
Checking steps:
Check that the decompressor cam 1
moves smoothly.
Check that the decompressor lever pin 2
projects from the c

Page 358 of 758

YAMAHA WR 450F 2005  Owners Manual 4 - 29
ENGCAMSHAFTS
Fit the timing chain 3 onto both camshaft
sprockets and install the camshafts on the
cylinder head.
NOTE:
The camshafts should be installed onto the
cylinder head so that the exha

Page 360 of 758

YAMAHA WR 450F 2005  Owners Manual 4 - 30
ENG
With the rod fully wound and the chain ten-
sioner UP mark a facing upward, install
the gasket 1 and the chain tensioner 2,
and tighten the bolt 3 to the specified
torque.
T R..
Bolt (timi

Page 406 of 758

YAMAHA WR 450F 2005  Owners Manual 4 - 53
ENGCLUTCH
EC493000
REMOVAL POINTS
EC483211
Clutch boss
1. Remove:
Nut 1 
Lock washer 2 
Clutch boss 3 
NOTE:
Straighten the lock washer tab and use the
clutch holding tool 4 to hold the clut

Page 410 of 758

YAMAHA WR 450F 2005  Owners Manual 4 - 55
ENGCLUTCH
EC4A5000
ASSEMBLY AND INSTALLATION
Push lever
1. Install:
Push lever 1 
Bolt (push lever)
NOTE:
Apply the lithium soap base grease on the oil
seal lip.
Apply the engine oil on the

Page 412 of 758

YAMAHA WR 450F 2005  Owners Manual 4 - 56
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 430 of 758

YAMAHA WR 450F 2005  Owners Manual 4 - 65
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