Kawasaki STX-15F - Manual (Page 243)

ENGINE BOTTOM END 8-23
Crankshaft and Connecting Rods
If any crankpin has worn past the service limit, replace the
crankshaft with a new one.
If the measured crankpin diameters are not less than the
service limit, but do not coincide with the original diameter
markings on the crankshaft, make new marks on it.
Crankpin Diameter Marks
None 38.984 ∼ 38.992 mm (1.5348 ∼ 1.5351 in.)
○
38.993 ∼ 39.000 mm (1.5352 ∼ 1.5354 in.)
∆: Crankpin Diameter Marks, “
○
” mark or no mark.
•
Measure the connecting rod big end bore diameter, and
mark each connecting rod big end in accordance with the
bore diameter.
Big End Cap [A]
Connecting Rod [B]
Weight Mark [C]: A letter of the alphabet
Bore Diameter Mark (Around Weight Mark) [D]: “
○
” or
no mark.
NOTE
○
Tighten the connecting rod big end nuts to the specified
torque (see Connecting Rod Installation).
○
The mark already on the big end should almost coincide
with the measurement.
Connecting Rod Big End Bore Diameter Marks
None 42.000 mm ∼ 42.008 mm (1.6535 ∼ 1.65386 in.)
○
42.009 ∼ 42.016 mm (1.65389 ∼ 1.6542 in.)
•
Select the proper bearing insert in accordance with the
combination coding of the connecting rod and crankshaft.
•
Install the new inserts in the connecting rod and check
insert/crankpin clearance with the plastigage.
Bearing Insert Con-rod Big End
Bore Diameter
Marking
Crankpin
Diameter
Marking
Size Color Part Number
None
○
Brown 92139-3710
None None
○ ○
Black 92139-3709
○
None Blue 92139-3708