Yamaha R1 Series 2015 Service Manual page 422

b
3
d. Make sure the piston pin clip "1" is positioned
as shown in the illustration.
e. Install the piston pin clip installer tool "4" onto
the piston.
Piston pin clip installer tool
90890-04174
YM-04174
f. While holding the piston clip installer tool, turn
it counterclockwise "c", to completely install
the piston pin clip in the piston.
c
g. Make sure that the piston pin clip "1" is in the
groove "d".
CONNECTING RODS AND PISTONS
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
6. Lubricate:
• Piston
1
• Piston rings
• Cylinder
(with the recommended lubricant)
7. Offset:
• Piston ring end gaps
a. Top ring
b. 2nd ring
4
c. Upper oil ring rail
d. Oil ring expander
e. Lower oil ring rail
A. Exhaust side
8. Lubricate:
• Crankshaft pins
• Connecting rod big end bearing inner surface
and side surface
(with the recommended lubricant)
9. Install:
• Piston assemblies "1"
(into the cylinder "2")
TIP
• While holding the piston rings with the hand, in-
5-81
d
Recommended lubricant
Engine oil
d
b,e
Recommended lubricant
Engine oil
1
a,c