POWER UNIT 6-35
SELECTION OF MAIN BEARING
Whenever a bearing requires replacement, select a new bearing
according to following procedure.
(1) Crankshaft journal outside diameter
Only one kind of crankshaft journal outside diameter is avail-
able as follow.
Standard:
(2) Next, check bearing holder inside diameter without
bearing.
As shown in figure, the PORT side of cylinder block has two
(2) stamped codes letters.
The letters (A & B) represent the bearing holder inside diam-
eters shown below.
Standard:
1 Top side I.D. code 2 Lower side I.D. code
(3) There are two (2) main bearings available, each of differ-
ing thickness.
To distinguish them, a color mark is painted at the position
indicated in figure.
Each color represents the following thickness measured at
the center of the bearing.
Standard:
Code Crankshaft journal outside diameter
– 31.989 – 32.000 mm (1.2594 – 1.2598 in)
Code Crankcase bearing holder inside diameter
A 35.008 – 35.016 mm (1.3783 – 1.3786 in)
B 35.000 – 35.008 mm (1.3780 – 1.3783 in)
Code Crankshaft bearing thickness
Green 1.486 – 1.490 mm (0.0585 – 0.0587 in)
Black 1.490 – 1.494 mm (0.0587 – 0.0588 in)
Color mark
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