Kawasaki STX-15F service manual Standard Service Limit, Cylinder, Piston

ENGINE TOP END 6-7

Specifications

Item			Standard				Service Limit
Inlet (Outer)	45.78 mm (1.802 in.)						44.2 mm (1.740 in.)
Cylinder, Piston
Cylinder Inside Diameter	82.994 ∼		83.006 mm (3.2675 ∼			3.2679 in.)	83.10 mm (3.272 in.)
Piston Diameter	82.919 ∼		82.934 mm (3.2645 ∼			3.2651 in.)	82.77 mm (3.259 in.)
Piston/cylinder Clearance	0.060 ∼		0.087 mm (0.0024 ∼ 0.0034 in.)				– – –
Piston Ring/groove
Clearance:
Top	0.03 ∼	0.07 mm (0.0012 ∼		0.0028 in.)			0.17 mm (0.0067 in.)
Second	0.02 ∼	0.06 mm (0.0008 ∼		0.0024 in.)			0.16 mm (0.0063 in.)
Piston Ring Groove Width:
Top	0.92 ∼	0.94 mm (0.0362 ∼		0.0370 in.)			1.02 mm (0.0402 in.)
Second	1.01 ∼	1.03 mm (0.0398 ∼		0.0406 in.)			1.11 mm (0.0437 in.)
Piston Ring Thickness:
Top	0.87 ∼	0.89 mm (0.0343 ∼		0.0350 in.)			0.80 mm (0.0315 in.)
Second	0.97 ∼	0.99 mm (0.0382 ∼		0.0390 in.)			0.90 mm (0.0354 in.)
Piston Ring End Gap:
Top	0.25 ∼	0.40 mm (0.0098 ∼		0.0157 in.)			0.7 mm (0.0276 in.)
Second	0.40 ∼	0.55 mm (0.0157 ∼		0.0217 in.)			0.8 mm (0.0315 in.)
Valve Head Thickness					Valve Stem Bend

Valve Head Thickness [A] Valve Stem Diameter [B] 45° [C]