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ENGINE BOTTOM END 8-25
Crankshaft and Connecting Rods
•
Measure the main bearing bore diameter, and mark [B]
the upper crankcase half [A] in accordance with the bore
diameter.
○
Crankcase main bearing bore diameter marks are "
○
"
mark and no mark.
NOTE
○
Tighten the crankcase bolts to the specified torque (see
Crankcase Assembly).
○
The mark already on the upper crankcase half should
almost coincide with the measurement.
Crankcase Main Bearing Bore Diameter Marks
○
44.000 ∼ 44.008 mm (1.7323 ∼ 1.73259 in.)
None
44.009 ∼ 44.016 mm (1.73263 ∼ 1.7329 in.)
Marking Position
•
Select the proper bearing insert in accordance with the
combination coding of the crankcase and crankshaft.
•
Install the new inserts in the crankcase halves and check
insert/journal clearance with the plastigage.
Bearing Insert*Crankcase Main
Bearing Bore
Diameter Marking
Crankshaft Main
Journal Diameter
Marking
Size Color Part Number Journal No.
92139-3704 1, 5
92139-3713 3
○
1 Brown
92139-3707 2, 4
92139-3703 1, 5
○
None
92139-3712 3
None 1
Black
92139-3706 2, 4
92139-3702 1, 5
92139-3711 3None None Blue
92139-3705 2, 4
*The bearing inserts for Nos. 2 and 4 journals have an oil groove, respectively.