Yamaha FX Nytro FX10MTRAX, Service Manual, Page: 528 / 859

5-73
ENG
CRANKSHAFT AND BALANCER SHAFT
• 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
®
width
e
on each crankshaft journal.
If the clearance is out of specification, select
replacement crankshaft journal bearings.
e
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-
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
CODE
2 black
3 brown
4 green
5 yellow
6 pink
7 red
8 white
J1
J2 J3 J4
2 2 2 1
3 2 2
J1
J3
J2
J4
È
J4 J3 J2 J1
É