Yamaha YZF-R1S Service Manual - Eng
5-86
CONNECTING RODS AND PISTONS
ENG
NOTE:
r. Measure the compressed Plastigauge
width on the crankshaft pin.
If the crankshaft-pin-to-big-end-bearing
clearance is out of specification, select re-
placement big end bearings.
2. Select:
Sbig end bearings (P1 X P4)
SThe numbers
A
stamped into the crankshaft
web and the numbers
1
on the connecting
rods are used to determine the replacement
big end bearing sizes.
S“P1” X “P4” refer to the bearings shown in the
crankshaft illustration.
For example, if the connecting rod “P
1
” and the
crankshaft web “P
1
” numbers are “5” and “2” re-
spectively, then the bearing size for “P1” is:
“P
1
” (connecting rod) – “P
1
”
(crankshaft) =
5 – 2 = 3 (brown)
BIG END BEARING COLOR CODE
1
Blue
2
Black
3
Brown
4
Green
INSTALLING THE CONNECTING ROD AND
PISTON
The following procedure applies to all of the
connecting rods and pistons.
1. Install:
Stop ring
1
S2nd ring
2
Supper oil ring rail
3
Soil ring expander
4
Slower oil ring rail
5