2003 YAMAHA TTR125 Owners Manual

Page 265 of 578

YAMAHA TTR125 2003  Owners Manual 4 - 10
ENG
CARBURATEUR
VERGASER
9. Montieren:
Vergaserdeckel 1 
Feder (Drosselventil) 2 
Drosselventil 3 
(am Gaszug 4)
HINWEIS:
Feder zusammendrücken und Gaszug anschlie-
ßen. 
Vergaser montiere

Page 266 of 578

YAMAHA TTR125 2003  Owners Manual 4 - 11
ENGCARBURETOR
3. Install:
Carburetor top cover 1 
Starter plunger 2 
Air vent hose 3 
Over flow hose 4 
Fuel hose 5 
NOTE:
Align the slit a of the throttle valve with the tab
b of the carb

Page 267 of 578

YAMAHA TTR125 2003  Owners Manual 4 - 11
ENG
3. Monter:
Cache supérieur du carburateur 1
Plongeur de starter 2
Reniflard 3
Flexible de trop-plein 4
Flexible de carburant 5
N.B.:
Aligner la fente a du boisseau et l’onglet b du

Page 268 of 578

YAMAHA TTR125 2003  Owners Manual 4 - 12
ENGCYLINDER HEAD
CYLINDER HEAD
CYLINDER HEAD SIDE COVER AND TAPPET COVER
Extent of removal:1 Cylinder head side cover and tappet cover removal
Extent of removal Order Part name Q’ty Remarks
C

Page 269 of 578

YAMAHA TTR125 2003  Owners Manual ENG
4 - 12
CULASSE
ZYLINDERKOPF
ZYLINDERKOPF
ZYLINDERKOPFDECKEL UND VENTILDECKEL
Demontage-Arbeiten:1 Zylinderkopfdeckel und Ventildeckel demontieren
Demontage-ArbeitenReihen-
folgeBauteil Anz. Bemerk

Page 270 of 578

YAMAHA TTR125 2003  Owners Manual 4 - 13
ENGCYLINDER HEAD
CYLINDER HEAD 
Extent of removal:1 Cylinder head removal 
Extent of removal Order Part name Q’ty Remarks
CYLINDER HEAD REMOVAL
1 Bolt (camshaft sprocket)  1
Refer to “REMOV

Page 271 of 578

YAMAHA TTR125 2003  Owners Manual ENG
4 - 13
CULASSE
ZYLINDERKOPF
ZYLINDERKOPF 
Demontage-Arbeiten:1 Zylinderkopf demontieren 
Demontage-ArbeitenReihen-
folgeBauteil Anz. Bemerkungen
ZYLINDERKOPF DEMONTIE-
REN
1 Schraube (Nockenwellen

Page 272 of 578

YAMAHA TTR125 2003  Owners Manual 4 - 14
ENGCYLINDER HEAD
REMOVAL POINTS
Cylinder head
1. Align:
“I” mark
(with stationary pointer)
Checking steps:
Turn the crankshaft counterclockwise with
a wrench.
Align the “I” mark a on