Yamaha FX Nytro 2008 Manuel D'atelier page 528

CRANKSHAFT AND BALANCER SHAFT
e
J1 J2 J3
È
J1
J2
J3
J4
J4 J3 J2 J1 É
• Tighten the bolts in the order of the embossed
numbers on the crankcase.
Refer to "INSTALLATION" in "CRANKCASE" on
page 5-54.
• Remove the lower crankcase and the crank-
shaft journal lower bearings.
• Measure the compressed Plastigauge
on each crankshaft journal.
If the clearance is out of specification, select
replacement crankshaft journal bearings.
7. Select:
• Crankshaft journal bearings (J1 ~ J4)
NOTE:
• The numbers È stamped into the crankshaft web
and the numbers É stamped into the lower
crankcase are used to determine the replace-
J4
ment crankshaft journal bearing sizes.
• "J1 ~ J4" refer to the bearings shown in the crank-
shaft web and lower crankcase illustration.
• If "J1 ~ J4" are the same, use the same size for
all of the bearings.
Selection of bearings:
For example, if the crankcase "J1" and crankshaft
web "J1" numbers are "6" and "1" respectively,
then the bearing size for "J1" is:
Bearing size for J1:
J1 (crankcase) – J1 (crankshaft web) + 2
= 6 – 1 + 2 = 7
CRANKSHAFT JOURNAL BEARING COLOR
5-73
ENG
CODE
2 black
3 brown
4 green
5 yellow
6 pink
7 red
8 white
®
width e