Installing The Pistons And Cylinders - Yamaha Star XVS13AA(C) 2011 Service Manual

EAS24460
INSTALLING THE PISTONS AND
CYLINDERS
The following procedure applies to all of the pis-
tons and cylinders.
1. Install:
• Top ring "1"
• 2nd ring "2"
• Oil ring expander "3"
• Lower oil ring rail "4"
• Upper oil ring rail "5"
TIP
Be sure to install the piston rings so that the
manufacturer's marks or numbers face up.
2. Install:
• Piston "1"
• Piston pin "2"
New
• Piston pin clips "3"
TIP
• Apply engine oil onto the piston pin.
• Make sure the arrow mark "a" on the piston fac-
es towards the front side of the cylinder.
• Before installing the piston pin clips, cover the
crankcase opening with a clean rag to prevent
the clips from falling into the crankcase.
• Install the piston pin clips so that the clip ends
are 3 mm (0.12 in) "b" or more from the cutout
in the piston.
• Reinstall each piston into its original cylinder.
CYLINDERS AND PISTONS
3. Lubricate:
• Piston
• Piston rings
• Cylinder
(with the recommended lubricant)
Recommended lubricant
Engine oil
4. Offset:
• Piston ring end gaps
a.b
a. Top ring
b. Upper oil ring rail
c. Oil ring expander
d. Lower oil ring rail
e. 2nd ring
A. forward
5. Install:
• Rear cylinder gasket "1"
• Front cylinder gasket "2"
A
1
B
A. Intake side
B. Exhaust side
5-46
b
3
New
d.e
A
90 ˚
c
20 ˚
90 ˚
A
2 B