Yamaha YZ450FA Automobile User Manual


 
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CYLINDER AND PISTON
3. Install:
•Piston "1"
• Piston pin "2"
• Piston pin clip "3"
• Apply engine oil onto the piston.
• Apply molybdenum disulfide oil onto the pis-
ton pin.
• Install the piston with the F mark "a" on it
pointing to its intake (front) side.
Before installing the piston pin clip, cover the
crankcase with a clean rag to prevent the pis-
ton pin clip from falling into the crankcase.
INSTALLING THE CYLINDER
1. Install:
• Dowel pins
• Cylinder gasket "1"
• Cylinder "2"
Install the cylinder with one hand while com-
pressing the piston rings with the other hand.
• 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)
Bolt (cylinder):
10 Nm (1.0 m•kg, 7.2 ft•lb)