Removing The Connecting Rods And Pistons - Yamaha YZF-R1 Series Service Manual

EAS30745
REMOVING THE CONNECTING RODS AND
PISTONS
The following procedure applies to all of the con-
necting rods and pistons.
1. Remove:
• Connecting rod cap
• Connecting rod
• Big end bearings
TIP
• Identify the position of each big end bearing so
that it can be reinstalled in its original place.
• After removing the connecting rods and con-
necting rod caps, care should be taken not to
damage the mating surfaces of the connecting
rods and connecting rod caps.
2. Remove:
• Piston pin clip "1"
a. Make sure that the piston pin clip ends are
in either the "a" or "b" position in relation to
the cutout "c".
TIP
If the piston pin clip ends are not positioned at
"a" or "b", adjust the piston pin clip ends position
by following steps (b) to (c).
1
c
b. Install the piston pin clip rotation tool "2" to
the piston pin clip.
TIP
When installing the piston pin clip rotation tool,
align the projection "d" on the piston pin clip ro-
tation tool with the clip ends "e".
CONNECTING RODS AND PISTONS
1
a b c
1
5-79
Piston pin clip rotation tool
90890-04175
YM-04175
c. Turn the piston pin clip rotation tool "2" so
that the piston pin clip ends are positioned
at "a" or "b".
d. Remove the piston pin clip "1" using long-
nose pliers or a similar tool.
TIP
When removing the piston pin clip, hold the pis-
ton pin clip in place with your fingers because it
can easily spring.
e
d 2
2
a b