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Yamaha TT-R90(T) User Manual

Yamaha TT-R90(T)
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4 - 26
ENG
CYLINDER AND PISTON
2. Position:
Top ring
2nd ring
Oil ring
Offset the piston ring end gaps as
shown.
a
Top ring end
b
Oil ring end (lower)
c
Oil ring end (upper)
d
2nd ring end
3. Install:
Piston
1
Piston pin
2
Piston pin clips
3
NOTE:
Apply engine oil onto the piston pin, piston
ring and piston.
Be sure that the arrow mark
a
on the piston
points to the exhaust side of the engine.
Before installing the piston pin clip, cover the
crankcase with a clean rag to prevent the
piston pin clip from falling into the crankcase.
4. Lubricate:
Piston
Piston rings
Cylinder
NOTE:
Apply a liberal coating of engine oil.
New
Cylinder
1. Install:
Dowel pins
Gasket
Cylinder
1
NOTE:
Install the cylinder with one hand while com-
pressing the piston rings with the other hand.
CAUTION:
Be careful not to damage the timing chain
damper during installation.
Pass the timing chain through the timing
chain cavity.
New

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Yamaha TT-R90(T) Specifications

General IconGeneral
BrandYamaha
ModelTT-R90(T)
CategoryMotorcycle
LanguageEnglish

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