5-96
E
POWR
CRANKSHAFT
• Tighten the bolts to specification in the
order of the numbers on the crankcase.
Refer to “Crankcase assembly”—
“CRANKCASE”.
• Remove the lower crankcase and the
crankshaft journal lower bearings.
• Measure the compressed Plastigauge
width
c
on each crankshaft journal.
If the crankshaft journal oil clearance is
out of specification, select replacement
crankshaft journal bearings.
c
4. Select:
• Crankshaft journal bearings (J
1
–J
5
)
NOTE:
• The numbers stamped into the crankshaft
web and the numbers stamped into the lower
crankcase are used to determine the
replacement crankshaft journal bearing
sizes.
•“J
1
–J
5
” refer to the bearings shown in the
crankshaft illustration.
• If “J
1
–J
5
” are the same, use the same size
for all of the bearings.
For example, if the crankcase “J
1
” and crank-
shaft web “J
1
” numbers are “8” and “2” respec-
tively, then the bearing size for “J
1
” is:
Bearing size of J
1
:
“J
1
” (crankcase) – “J
1
” (crankshaft web)
– 1
8 – 2 – 1 = 5 (Red/black)
BEARING COLOR CODE
3 Red/red
4Red/brown
5 Red/black
6 Red/blue
7Red/green
J5J4J3J2J1
J1
J2
J3
J4
J5
J5
J4
J3
J2
J1