2002 YAMAHA YZ250F air filter

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Page 184 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) 3 - 12
INSP
ADJ
AIR FILTER CLEANING
2. Adjust:
Decompression lever free play
AIR FILTER CLEANING
NOTE:
Proper air filter maintenance is the biggest key
to preventing premature engine wear and
damage.

Page 185 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) INSP
ADJ
NETTOYAGE DU FILTRE A AIR
LUFTFILTER REINIGEN
PULIZIA FILTRO DELL’ARIA
2. Einstellen:
Dekompressionszugspiel
am Hebeldrehpunkt
LUFTFILTER REINIGEN
HINWEIS:
Frühzeitige und sachgemäße
Lu

Page 186 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) 3 - 13
INSP
ADJ
ENGINE OIL LEVEL INSPECTION
3. Inspect:
Air filter element
Damage → Replace.
4. Apply:
Foam-air-filter oil or engine oil to the ele-
ment.
NOTE:
Squeeze out the excess oil. Element

Page 187 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) INSP
ADJ
CONTROLE DU NIVEAU D’HUILE MOTEUR
MOTORÖLSTAND KONTROLLIEREN
CONTROLLO DEL LIVELLO DELL’OLIO MOTORE
3. Kontrollieren:
Luftfittereinsatz
Beschädigung → Erneuern.
4. Auftragen:
Schaum

Page 193 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) INSP
ADJ
CHANGEMENT DE L’HUILE DE MOTEUR
MOTORÖL WECHSELN
SOSTITUZIONE DELL’OLIO MOTORE
4. Demontieren:
Öltankdeckel 1 
Rahmen des Ölablaufstop-
fens 2 
Kurbelwellen-Ölablaufstop-
fen 3 


Page 270 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) 4 - 7
ENGCARBURETOR
CARBURETOR
Extent of removal:1 Carburetor removal
Extent of removal Order Part name Q’ty Remarks
CARBURETOR REMOVAL
Preparation for removal Seat and fuel tank Refer to “SEAT, F

Page 271 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) 4 - 7
ENG
CARBURATEUR
VERGASER
CARBURATORE
VERGASER
Demontage-Arbeiten:1 Vergaser demontieren 
Demontage-ArbeitenReihen-
folgeBauteil Anz. Bemerkungen
VERGASER DEMONTIEREN
Vorbereitung für den Ausbau

Page 292 of 666

YAMAHA YZ250F 2002  Manuale duso (in Italian) 4 - 18
ENGCARBURETOR
Fully turn in the accelerator pump adjust-
ing screw 3.
Check that the link lever 4 has free play
b by pushing lightly on it.
Gradually turn out the adjusting screw
while movin
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