2002 YAMAHA WR 426F lock

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Page 391 of 776

YAMAHA WR 426F 2002  Owners Manual ENG
4 - 24
ARBRES A CAMES
NOCKENWELLE
ÁRBOLES DE LEVAS
AUSBAU
Nockenwelle
1. Demontieren:
Schwungrad-Abdeckschrau-
be 1 
Rotorzapfen-Abdeckschrau-
be 2 
2. Ausrichten:
I-Markierung
(auf Gehäusema

Page 396 of 776

YAMAHA WR 426F 2002  Owners Manual 4 - 27
ENGCAMSHAFTS
Timing chain tensioner
1. Check:
While pressing the tensioner rod lightly
with fingers, use a thin screwdriver 1
and wind the tensioner rod up fully
clockwise.
When releasing the

Page 398 of 776

YAMAHA WR 426F 2002  Owners Manual  
4 - 28
ENG
 
CAMSHAFTS 
2. Install: 
 
Timing chain tensioner
3. Turn: 
 
Crankshaft
Counterclockwise several turns
4. Check: 
 
Rotor “I” mark
Align with the crankcase stationary
pointer. 


Page 444 of 776

YAMAHA WR 426F 2002  Owners Manual 4 - 51
ENGCLUTCH (WR426F)
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

Page 448 of 776

YAMAHA WR 426F 2002  Owners Manual 4 - 53
ENGCLUTCH (WR426F)
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 o

Page 450 of 776

YAMAHA WR 426F 2002  Owners Manual 4 - 54
ENGCLUTCH (WR426F)
3. Bend the lock washer 1 tab.
4. Install:
Seat plate 1
Clutch damper spring 2 
NOTE:
Install the seat plate with its chamfered por-
tion a facing the clutch boss 3.
Inst

Page 458 of 776

YAMAHA WR 426F 2002  Owners Manual 4 - 58
ENGCLUTCH (WR400F)
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

Page 462 of 776

YAMAHA WR 426F 2002  Owners Manual 4 - 60
ENGCLUTCH (WR400F)
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 o