2004 YAMAHA TTR90 lock

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Page 204 of 364

YAMAHA TTR90 2004  Owners Manual 4 - 10
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

Page 205 of 364

YAMAHA TTR90 2004  Owners Manual 4 - 10
ENG
CULASSE
ZYLINDERKOPF
AUSBAU
Zylinderkopf
1. Ausrichten:
I-Markierung
(auf Gehäusemarkierung)
Arbeitsschritte:
Kurbelwelle mit einem Schraubenschlüs-
sel gegen den Uhrzeigersinn drehen.

Page 206 of 364

YAMAHA TTR90 2004  Owners Manual 4 - 11
ENGCYLINDER HEAD
4. Remove:
Cylinder head
NOTE:
Loosen the bolts and nuts in their proper
loosening sequence.
Start by loosening each bolt and nut 1/2 turn
until all are loose.
ASSEMBLY AND

Page 207 of 364

YAMAHA TTR90 2004  Owners Manual 4 - 11
ENG
4. Déposer:
Culasse
N.B.:
Desserrer les boulons et écrous dans l’ordre de
desserrage indiqué.
Desserrer d’abord chaque boulon et écrou de 1/2
tour.
ASSEMBLAGE ET MONTAGE
1. Monte

Page 210 of 364

YAMAHA TTR90 2004  Owners Manual 4 - 13
ENGCAMSHAFT AND ROCKER ARMS
CAMSHAFT AND ROCKER ARMS
Extent of removal:1 Rocker arm2 Camshaft removal
Extent of removal Order Part name Q’ty Remarks
CAMSHAFT AND ROCKER 
ARMS 
Preparation for

Page 240 of 364

YAMAHA TTR90 2004  Owners Manual  
4 - 28
ENG
 
CLUTCH 
CLUTCH 
Extent of removal: 
1 
 Friction plate and clutch plate removal 
2  
 Clutch housing removal  
3 
 Primary clutch removal
Extent of removal Order Part name Q’ty Remark

Page 244 of 364

YAMAHA TTR90 2004  Owners Manual  
4 - 30
ENG
 
CLUTCH 
REMOVAL POINTS
Clutch boss 
1. Remove: 
 
Clutch boss nut  
1  
  
 
Lock washer  
2 
  
 
Clutch boss 
NOTE:
 
Straighten the lock washer tab and use the 
clutch holding too

Page 248 of 364

YAMAHA TTR90 2004  Owners Manual 4 - 32
ENGCLUTCH
ASSEMBLY AND INSTALLATION
Primary clutch
1. Install:
Washer 1 
Nut (primary clutch) 2 
NOTE:
Tighten the nut while holding the magneto
rotor with the sheave holder 3.
Clutch
1. Inst
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