2006 YAMAHA YZ250LC air condition

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Page 14 of 596

YAMAHA YZ250LC 2006  Owners Manual EC083000
MANUAL FORMAT
All of the procedures in this manual are organized in a sequential, step-by-step format. The information
has been complied to provide the mechanic with an easy to read, handy re

Page 47 of 596

YAMAHA YZ250LC 2006  Owners Manual 1-9
FONCTIONS DES COMMANDES
BEDIENUNGSELEMENTE
FUNZIONI DEI COMANDI
GEN
INFO
FONCTIONS DES
COMMANDES
BOUTON D’ARRET DE MOTEUR
“ENGINE STOP”
Ce bouton d’arrêt de moteur “ENGINE
STOP” 1est

Page 540 of 596

YAMAHA YZ250LC 2006  Owners Manual 7-1
SETTINGTUN
EC700000
TUNINGEC710000
ENGINEEC711001
Carburetor setting
9The role of fuel is to cool the engine, and in the
case of a 2-stroke engine, to lubricate the
engine in addition to power gen

Page 541 of 596

YAMAHA YZ250LC 2006  Owners Manual 7-1
REGLAGE
EINSTELLUNG
REGISTRAZIONETUN
TUNING
MOTOR
Vergasereinstellung
9Zusätzlich zu der Krafterzeugung
dient der Kraftstoff auch zur Kühlung
des Motors, und im Falle eines Zwei-
taktmotors, auc

Page 542 of 596

YAMAHA YZ250LC 2006  Owners Manual 7-2
SETTINGTUN
That is:
9Higher temperature expands the air with its
resultant reduced density.
9Higher humidity reduces the amount of oxygen
in the air by so much of the water vapor in the
same air.

Page 543 of 596

YAMAHA YZ250LC 2006  Owners Manual 7-2
REGLAGE
EINSTELLUNG
REGISTRAZIONETUN
Das heißt:
9Eine höhere Temperatur führt zu
einer Ausdehnung der Luft und
damit zu einer geringeren Dichte.
9Eine höhere Luftfeuchtigkeit redu-
ziert den S

Page 558 of 596

YAMAHA YZ250LC 2006  Owners Manual 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 559 of 596

YAMAHA YZ250LC 2006  Owners Manual 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
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