2000 YAMAHA TTR90 lock

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Page 166 of 287

YAMAHA TTR90 2000  Owners Manual 4 - 10
ENGCYLINDER HEAD
REMOVAL POINTS
Cylinder head
1. Remove:
lCrankshaft end cover
lTiming plug
2. Align:
l“I” mark
(with stationary pointer)
Checking steps:
lTurn the crankshaft counterclockwi

Page 167 of 287

YAMAHA TTR90 2000  Owners Manual ENG
4 - 10
CULASSE
ZYLINDERKOPF
AUSBAU
Zylinderkopf
1. Demontieren:
lKurbelwellen-Abdeckschraube
lSchwungrad-Abdeckschraube 
2. Ausrichten:
lI-Markierung
(auf Gehäusemarkierung)
Arbeitsschritte
lKurb

Page 168 of 287

YAMAHA TTR90 2000  Owners Manual 4 - 11
ENGCYLINDER HEAD
5. Remove:
lCylinder head
NOTE:
lLoosen the bolts and nuts in their proper
loosening sequence.
lStart by loosening each bolt and nut 1/2 turn
until all are loose.
ASSEMBLY AND

Page 169 of 287

YAMAHA TTR90 2000  Owners Manual ENG
4 - 11
5. Déposer:
lCulasse
N.B.:
lDesserrer les boulons et écrous dans l’ordre de
desserrage indiqué.
lDesserrer d’abord chaque boulon et écrou de 1/2
tour.
ASSEMBLAGE ET MONTAGE
1. Monte

Page 172 of 287

YAMAHA TTR90 2000  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 202 of 287

YAMAHA TTR90 2000  Owners Manual 4 - 28
ENGCLUTCH
CLUTCH
Extent of removal:1 Friction plate and clutch plate removal2 Clutch housing removal
3 Primary clutch removal
Extent of removal Order Part name Q’ty Remarks
CLUTCH REMOVAL
1 B

Page 206 of 287

YAMAHA TTR90 2000  Owners Manual 4 - 30
ENGCLUTCH
EC493000
REMOVAL POINTS
EC483211
Clutch boss
1. Remove:
lClutch boss nut 1 
lLock washer 2 
lClutch boss 
NOTE:
Straighten the lock washer tab and use the
clutch holding tool 3 to hol

Page 210 of 287

YAMAHA TTR90 2000  Owners Manual 4 - 32
ENGCLUTCH
2. Measure:
lClutch shoe groove depth a 
Out of specification ® Replace.
Clutch shoe groove depth:
1.0 ~ 1.3 mm (0.039 ~ 0.051 in)
<Limit>: 0.1 mm (0.004 in)
ASSEMBLY AND INSTALLATIO
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