Yamaha WR450F(S), Руководство по эксплуатации для владельца

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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
2nd ring end
c
Oil ring end (upper)
d
Oil ring
e
Oil ring end (lower)
3. Install:
●
Piston 1
●
Piston pin 2
●
Piston pin clips 3
NOTE:
●
Apply engine oil onto the piston pin and pis-
ton.
●
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.
●
Install the piston pin clips with their ends fac-
ing downward.
4. Lubricate:
●
Piston
●
Piston rings
●
Cylinder
NOTE:
Apply a liberal coating of engine oil.
Cylinder
1. Install:
●
Dowel pins
●
O-ring
●
Gasket 1
●
Cylinder 2
NOTE:
Install the cylinder with one hand while com-
pressing the piston rings with the other hand.
CAUTION:
●
Pass the timing chain 3 through the tim-
ing chain cavity.
●
Be careful not to damage the timing chain
guide
4 during installation.
2. Install:
●
Bolt (cylinder)
45
°
135
°
135
°
a
b c e
d
3
New
New
New
T
R .
.
10 Nm (1.0 m · kg, 7.2 ft · lb)