YAMAHA WR 426F 2002 Owners Manual

YAMAHA WR 426F 2002 Owners Manual WR 426F 2002 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52438/w960_52438-0.png YAMAHA WR 426F 2002 Owners Manual
Trending: maintenance schedule, clock, headlight bulb, flat tire, check engine light, boot, brake rotor

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 392 of 776

YAMAHA WR 426F 2002  Owners Manual 4 - 25
ENGCAMSHAFTS
6. Remove:
Clips 
Exhaust camshaft 1 
Intake camshaft 2 
NOTE:
Attach a wire 3 to the timing chain to prevent
it from falling into the crankcase.
INSPECTION
Camshaft
1. Inspect:

Page 393 of 776

YAMAHA WR 426F 2002  Owners Manual ENG
4 - 25
ARBRES A CAMES
NOCKENWELLE
ÁRBOLES DE LEVAS
6. Demontieren:
Clip
Auslaß-Nockenwelle 1 
Einlaß-Nockenwelle 2 
HINWEIS:
Die Steuerkette mit einem Draht 3
sichern, damit sie nicht herabf

Page 394 of 776

YAMAHA WR 426F 2002  Owners Manual  
4 - 26
ENG
 
CAMSHAFTS 
4. Measure: 
 
Camshaft-to-cap clearance 
Out of specification   
→  
 Measure bearing
diameter (camshaft)  
Camshaft-to-cap clearance:
0.020 ~ 0.054 mm 
(0.0008 ~ 0.0021

Page 395 of 776

YAMAHA WR 426F 2002  Owners Manual ENG
4 - 26
ARBRES A CAMES
NOCKENWELLE
ÁRBOLES DE LEVAS
4. Messen:
Nockenwellen-Lagerspiel
Unvorschriftsmäßig → Nok-
kenwellenlagerzapfen-
Durchmesser messen. 
Nockenwellen-Lager-
spiel
0,020–0

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 397 of 776

YAMAHA WR 426F 2002  Owners Manual ENG
4 - 27
ARBRES A CAMES
NOCKENWELLE
ÁRBOLES DE LEVAS
Steuerkettenspanner
1. Kontrollieren:
Den Steuerkettenspanner-
kopf leicht mit dem Finger
eindrücken und den Span-
ner mit einem dünnen
Schra

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 399 of 776

YAMAHA WR 426F 2002  Owners Manual ENG
4 - 28
ARBRES A CAMES
NOCKENWELLE
ÁRBOLES DE LEVAS
2. Montieren:
Steuerkettenspanner
3. Drehen:
Kurbelwelle
(mehrere Umdrehungen
gegen den Uhrzeigersinn)
4. Kontrollieren:
I-Markierung auf dem

Page 400 of 776

YAMAHA WR 426F 2002  Owners Manual ENG
4 - 29
CYLINDER HEAD
CYLINDER HEAD
CYLINDER HEAD
Extent of removal:1 Cylinder head removal
Extent of removal Order Part name Q’ty Remarks
CYLINDER HEAD REMOVAL
Preparation for removal Seat and f
Trending: ad blue, engine oil capacity, relay, stop start, wheel bolt torque, oil capacity, fuel tank capacity