5-86
CONNECTING RODS AND PISTONSENG
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:
big end bearings (P1 P4)
The 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.
“P1” “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) – “P1”
(crankshaft) =
5 – 2 = 3 (brown)
BIG END BEARING COLOR CODE
1Blue
2Black
3Brown
4Green
INSTALLING THE CONNECTING ROD AND
PISTON
The following procedure applies to all of the
connecting rods and pistons.
1. Install:
top ring
1
2nd ring 2
upper oil ring rail 3
oil ring expander 4
lower oil ring rail 5
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5-95
CRANKSHAFTENG
NOTE:
NOTE:
* Following the tightening order, loosen the bolt
one by one and then retighten it to the specific
torque.
Lubricate the crankcase bolt threads with en-
gine oil.
Refer to “CRANKCASE”.
g. Remove the lower crankcase and the crank-
shaft journal lower bearings.
h. Measure the compressed Plastigauge
width c on each crankshaft journal.
If the crankshaft-journal-to-crankshaft-jour-
nal-bearing clearance is out of specification,
select replacement crankshaft journal bear-
ings.
2. Select:
crankshaft journal bearings (J1 J5)
The numbers
A stamped into the crankshaft
web and the numbers
1 stamped into the low-
er crankcase are used to determine the re-
placement crankshaft journal bearing sizes.
“J1 J5” refer to the bearings shown in the
crankshaft illustration.
If “J1 J5” are the same, use the same size
for all of the bearings.
If the size is the same for all “J
1 to J5” one digit
for that size is indicated. (Crankcase side only)
For example, if the crankcase “J
1” and crank-
shaft web “J
1” numbers are “6” and “2” respec-
tively, then the bearing size for “J1” is:
“J
1” (crankcase) – “J1”
(crankshaft web) – 1 =
6 – 2 – 1 = 3 (brown)
CRANKSHAFT JOURNAL BEARING
COLOR CODE
0White
1Blue
2Black
3Brown
4Green
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