Yamaha XVS950CU 2014 - Installing the Pistons and Cylinders

CYLINDERS AND PISTONS
5-40
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”
• Circlips “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 circlips, cover the crank-
case opening with a clean rag to prevent the
clips from falling into the crankcase.
• Install the circlips 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.
3. Lubricate:
•Piston
• Piston rings
• Cylinder
(with the recommended lubricant)
4. Offset:
• Piston ring end gaps
5. Install:
• Rear cylinder gasket “1”
• Front cylinder gasket “2”
New
Recommended lubricant
Engine oil
a. Top ring
b. Upper oil ring rail
c. Oil ring expander
d. Lower oil ring rail
e. 2nd ring
A. forward
A. Intake side
B. Exhaust side