Installation - Yamaha RS90GTZ Service Manual

CONNECTING RODS AND PISTONS
5-73

INSTALLATION

1. Install:
• Top ring
• 2nd ring
• Upper oil ring rail
• Oil ring expander
• Lower oil ring rail
TIP
Be sure to install the piston rings so that the
manufacturer marks
2. Install:
• Piston
(onto the respective connecting rod
• Piston pin
• Piston pin clips
TIP
• Apply engine oil onto the piston pin.
• Make sure that the "Y" mark
necting rod faces left when the punch mark
on the piston is pointing up. Refer to the
illustration.
• Install the piston pin clips, so that the clip
ends are 3 mm (0.12 in)
cutout in the piston.
• Reinstall each piston into its original cylinder
(numbering order starting from the left: #1 to
#3).
3. Offset:
• Piston ring end gaps
Top ring
2nd ring
Upper oil ring rail
Oil ring expander
Lower oil ring rail
Exhaust side
ENG
face up.
)
on the con-
or more from the