2004 YAMAHA YZ250LC ESP

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Page 498 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 6-2
ZÜNDANLAGEELEC
*Zündkerze reinigen oder
erneuern.
Primärspule
Sekundärspule
Erneuern oder reparieren.
Zündfunke
Die Anschlüsse der gesamten
Zündanlage kontrollieren.
Test der Zündfunkenstr

Page 499 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 6-2
SISTEMA DI ACCENSIONEELEC
*Pulire o sostituire la candela.
Bobina primaria
Bobina
secondaria
Ripararlo o sostituirlo.
Scintilla
Controllare il collegamento dell’intero
sistema di accensione.
Tes

Page 505 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 6-5
SYSTEME D’ALLUMAGE
ZÜNDANLAGE
SISTEMA DI ACCENSIONEELEC
2. Prüfen:
9Widerstand der Stromspule 1
Abweichung von Spezifikation
Erneuern.2. Examiner:
9Résistance de bobine de source
1
Hors spé

Page 537 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 7-5
REGLAGE
EINSTELLUNG
REGISTRAZIONETUN
1. Trop riche aux régimes intermé-
diaires
Le fonctionnement du moteur est
irrégulier et le moteur ne prend pas
régulièrement de vitesse. Dans ce
cas, rem

Page 546 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 7-10
SETTINGTUN
EC71D021
Examples of carburetor setting depending on symptom
Symptom Setting Checking
At full throttle Increase main jet calibration No. Discoloration of spark plug 
Hard breathing (G

Page 547 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 7-11
SETTINGTUN
Symptom Setting Checking
0~1/4 throttle Use jet needle having a smaller  Number of turns-back 
Hard breathing diameter. Correct properly
Speed down Overflow from carburetor
0~1/4 thro

Page 552 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 7-10
REGISTRAZIONETUN
IC71C030
Condizioni stradali ed esempi di registrazione del carburatore
IC71D021
Esempi di registrazione del carburatore a seconda dei sintomi
Sintomo
Con valvola a farfalla
comp

Page 553 of 588

YAMAHA YZ250LC 2004  Notices Demploi (in French) 7-11
REGISTRAZIONETUN
Sintomo
Valvola a farfalla a 0 ~ 1/4 
Respirazione difficoltosa
Velocità bassa
Valvola a farfalla a 0 ~ 1/4 
Accelerazione scarsa
Fumo bianco
Instabile a bassi regimi
Rumore di
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