Kawasaki STX-15F service manual Standard Service Limit Crankshaft, Connecting Rods

8-4 ENGINE BOTTOM END

Specifications

Item		Standard	Service Limit
Crankshaft, Connecting Rods
Connecting Rod Bend	– – –		0.2/100 mm
			(0.008/3.94 in.)
Connecting Rod Twist	– – –		0.2/100 mm
			(0.008/3.94 in.)
Connecting Rod Big End Side Clearance	0.13 ∼ 0.38 mm		0.58 mm
	(0.0051 ∼	0.0150 in.)	(0.023 in.)
Connecting Rod Big end Bearing	0.041 ∼ 0.071 mm		0.11 mm
Insert/crankpin Clearance	(0.0016 ∼	0.0028 in.)	(0.0043 in.)
Crankpin Diameter:	38.984 ∼	39.000 mm	38.97 mm
	(1.5348 ∼	1.5354 in.)	(1.534 in.)
Marking:
None	38.984 ∼	38.992 mm	– – –
○	(1.5348 ∼	1.5351 in.)
	38.993 ∼	39.000 mm	– – –
	(1.5352 ∼	1.5354 in.)
Connecting Rod Big End Bore Diameter:	42.000 ∼	42.016 mm	– – –
	(1.6535 ∼	1.6542 in.)
Marking
None	42.000 ∼	42.008 mm	– – –
○	(1.6535 ∼	1.65386 in.)
	42.009 ∼	42.016 mm	– – –
	(1.65389 ∼ 1.6542 in.)
Connecting Rod Big End Bearing Insert
Thickness:

Brown

Black

Blue

1.475 ∼ 1.480 mm

(0.05807 ∼ 0.05827 in.)

1.480 ∼ 1.485 mm

(0.05827 ∼ 0.05846 in.)

1.485 ∼ 1.490 mm

(0.05846 ∼ 0.05866 in.)

– – –

– – –

– – –

Connecting Rod Big End Bearing Insert Selection

Con-rod Big	Crankpin		Bearing Insert
End Bore
	Diameter
Diameter		Size Color		Part Number
	Marking
Marking
None	○	Brown		92139-3710
None	None	Black		92139-3709
○	○
○	None	Blue		92139-3708

Crankshaft Side Clearance

Crankshaft Runout

Crankshaft Main Bearing Insert/journal Clearance

0.05∼ 0.24 mm

(0.0020 ∼ 0.0094 in.)

TIR 0.03 mm (0.0012 in.) or less

0.030 ∼ 0.054 mm

(0.0012 ∼ 0.0021 in.)

0.44mm (0.017 in.)

TIR 0.07 mm

(0.0028 in.)

0.08mm

(0.0032 in.)