2001 YAMAHA WR 400F Manuale duso (in Italian)

Page 329 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) INSP
ADJ
PARTIE ELECTRIQUE/CONTROLE DE LA BOUGIE
ELEKTRISCHE ANLAGE/ZÜNDKERZE KONTROLLIEREN
SISTEMA ELÉCTRICO/INSPECCIÓN DE LA BUJÍA
ELEKTRISCHE ANLAGE
ZÜNDKERZE KONTROLLIEREN
1. Demontieren:
lZ

Page 330 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) 3 - 48
INSP
ADJ
IGNITION TIMING CHECK
IGNITION TIMING CHECK
1. Remove:
lTiming plug 1 
2. Attach:
lTiming light 
lInductive tachometer 
To the spark plug lead. 
3. Check:
lIgnition timing
Timing light

Page 331 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) INSP
ADJ
CONTROLE DE L’AVANCE A 
L’ALLUMAGE
1. Déposer:
lBouchon de distribution 1 
2. Attacher:
lLampe stroboscopique 
lCompte-tours inductif 
Au fil de la bougie. 
3. Contrôler:
lAvance à l

Page 332 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) 3 - 49
INSP
ADJ
REPLACING THE HEADLIGHT BULBS
REPLACING THE HEADLIGHT BULBS
1. Remove:
lHeadlight
Refer to “SEAT, FUEL TANK AND
SIDE COVERS” section in the CHAP-
TER 4.
2. Remove:
lHeadlight bulb

Page 333 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) INSP
ADJ
REMPLACER LES AMPOULES DU 
PHARE 
1. Déposer:
lPhare
Se référer à la section “SELLE,
RESERVOIR A ESSENCE ET
CACHES LATERAUX” du
CHAPITRE 4.
2. Déposer:
lCache de fixation d’ampoule

Page 334 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) 3 - 50
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ADJ
ADJUSTING THE HEADLIGHT BEAMS
ADJUSTING THE HEADLIGHT BEAMS
1. Adjust:
lHeadlight beam (vertically)
Adjusting steps:
lTurn the adjusting screw 1 in direction a
or b.
Direction a  Headl

Page 335 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) INSP
ADJ
REGLAGES DES FAISCEAUX DES 
PHARES
1. Régler:
lLe faisceau du phare (vertical)
Procédures de réglage:
lTourner la vis de réglage 1 dans le
sens a ou b.
Sens aLe faisceau du phare 
se rel

Page 336 of 762

YAMAHA WR 400F 2001  Manuale duso (in Italian) ENG
 
4 - 1 
3EC400000 
ENGINE 
EC4R0000 
SEAT, FUEL TANK AND SIDE COVERS 
Extent of removal:  
1  
 Seat removal  
2  
 Fuel tank removal  
3  
 Side covers removal  
4  
 Headlight removal
Extent of