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Yamaha TT-R90E 2003 Fahrer- Und Wartungshandbuch Seite 192

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CYLINDER HEAD
4. Remove:
Cylinder head
G
NOTE:
Loosen the bolts and nuts in their proper
G
loosening sequence.
Start by loosening each bolt and nut 1/2 turn
G
until all are loose.
ASSEMBLY AND INSTALLATION
1. Install:
Cylinder head
G
2. Tighten:
Nuts
G
Bolts
G
NOTE:
Apply the engine oil on the contact surfaces
G
of the nuts, bolts and copper washers.
Follow the numerical order shown in the illus-
G
tration. Tighten the bolts and nuts in two
stages.
3. Install:
Camshaft sprocket 1
G
Installation steps:
Turn the crankshaft counterclockwise until
G
the "I" mark a on the rotor is aligned with
the stationary pointer b on the crankcase
cover.
Align the "I" mark c on the camshaft
G
sprocket with the stationary pointer d on
the cylinder head.
Fit the timing chain 2 onto camshaft
G
sprocket and install the camshaft sprocket
on the camshaft.
NOTE:
When installing the camshaft sprocket, keep
the timing chain as tense as possible on the
exhaust side.
4 - 11
ENG
22 Nm (2.2 m · kg, 16 ft · lb)
10 Nm (1.0 m · kg, 7.2 ft · lb)

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Tt-r90er 2003

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