Kawasaki STX-15F - Manual (Page 185)

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