Yamaha RST90GTZ, Service Manual

Page: 297 / 504

ENG
5-72
• Tighten the connecting rod nuts.
Refer to “CONNECTING RODS AND PIS-
TONS”.
• Remove the connecting rod and big end
bearings.
• Measure the compressed Plastigauge
®
width on the crankshaft pin.
If the crankshaft-pin-to-big-end-bearing
clearance is out of specification, select
replacement big end bearings.
11.Select:
• Big end bearings (P1 ~ P3)
TIP
• The numbers stamped into the crankshaft
web and the numbers on the connecting
rods are used to determine the replacement
big end bearing sizes.
• “P1” ~ “P3” refer to the bearings shown in the
crankshaft illustration.
Selection of bearings:
• For example, if the connecting rod “P1” and
the crankshaft web “P1” numbers are “6” and
“2” respectively, then the bearing size for “P1”
is:
Bearing size for “P1”:
“P1” (connecting rod) –
“P1” (crankshaft web) – 1 =
6 – 2 – 1 = 3 (brown)
BIG END BEARING COLOR CODE
0 white
1 blue
2 black
3 brown
4 green
5 yellow
CONNECTING RODS AND PISTONS