2003 YAMAHA YZ250F Owners Manual

Page 481 of 662

YAMAHA YZ250F 2003  Owners Manual 5 - 14
CHAS
FREIN AVANT ET FREIN ARRIERE
VORDER- UND HINTERRADBREMSE
FRENO ANTERIORE E POSTERIORE
AUSBAU
Bremsflüssigkeit
1. Demontieren:
[Vorn]
Hauptbremszylinderdeckel 1 
[Hinten]
Hauptbremszylin

Page 482 of 662

YAMAHA YZ250F 2003  Owners Manual 5 - 15
CHASFRONT BRAKE AND REAR BRAKE
Brake caliper piston seal kit
1. Remove:
Dust seal 1 
Piston seal 2 
NOTE:
Remove the piston seals and dust seals by
pushing them with a finger.
ACHTUNG:CAUTION

Page 483 of 662

YAMAHA YZ250F 2003  Owners Manual 5 - 15
CHAS
FREIN AVANT ET FREIN ARRIERE
VORDER- UND HINTERRADBREMSE
FRENO ANTERIORE E POSTERIORE
Bremssattelkolben-Dichtungssatz
1. Demontieren:
Staubschutzring 1 
Dichtring 2 
HINWEIS:
Die Bremsko

Page 484 of 662

YAMAHA YZ250F 2003  Owners Manual 5 - 16
CHAS
Brake caliper
1. Inspect:
Brake caliper cylinder inner surface a 
Wear/score marks → Replace brake
caliper assembly.
ÅFront
ıRear
ı Å
2. Inspect:
Brake caliper piston 1 
Wear/score

Page 485 of 662

YAMAHA YZ250F 2003  Owners Manual  
5 - 16
CHAS
 
Bremssattel  
1. Kontrollieren: 
 
Hauptbremszylinder-Boh-
rungsfläche   
a  
 
Verschleiß/Riefen   
→  
 Brems-
sattelbaugruppe ersetzen. 
Å  
Vorn  
ı  
Hinten 
2. Kontrollier

Page 486 of 662

YAMAHA YZ250F 2003  Owners Manual 5 - 17
CHAS
2. Install:
Piston seal 1 
Dust seal 2 
WARNING
Always use new piston seals and dust
seals.
NOTE:
Fit the piston seals and dust seals onto the slot
on brake caliper correctly.
ÅFront
ı

Page 487 of 662

YAMAHA YZ250F 2003  Owners Manual  
5 - 17
CHAS
 
2. Montieren: 
 
Dichtring  
1 
  
 
Staubschutzring  
2 
 
WARNUNG
 
Immer neue Bremskolben-Dicht- 
ringe verwenden.
HINWEIS:
 
Die Bremskolben-Dichtringe richtig in 
die Nuten im B

Page 488 of 662

YAMAHA YZ250F 2003  Owners Manual 5 - 18
CHASFRONT BRAKE AND REAR BRAKE
2. Install:
Copper washer 1
Union bolt 2 
WARNING
Always use new copper washers.
ACHTUNG:CAUTION:
Install the brake hose so that its pipe por-
tion a directs as