General Specifications

EXHAUST VALVE SEAT RING HOLE DIAMETER (Oversize)
1st O.S. (0.3 mm) (0.012 inch) 38.300 - 38.325 mm (1.5079 - 1.5089 inch)
2nd O.S. (0.6 mm) (0.024 inch) 38.600 - 38.625 mm (1.5197 - 1.5207 inch)

FLATNESS OF CYLINDER HEAD SURFACE
Standard Value (Max.) 0.05 mm (0.002 inch)
Wear Limit 0.2 mm (0.008 inch)

FLATNESS OF MANIFOLD MOUNTING SURFACE
Intake:
Standard Value (Max.) 0.10 mm (0.004 inch)
Wear Limit 0.2 mm (0.008 inch)
Exhaust:
Standard Value (Max.) 0.15 mm (0.006 inch)
Wear Limit 0.3 mm (0.012 inch)

INTAKE VALVE SEAT RING HOLE DIAMETER (Oversize)
1st O.S. 0.3 mm (0.012 inch) 44.300 - 44.325 mm (1.7441 - 1.7451 inch)
2nd O.S. 0.6 mm (0.024 inch) 44.600 - 44,625 mm (1.7559 - 1.7569 inch)

VALVE GUIDE HOLE DIAMETER (Oversize)
1st O.S. 0.05 mm (0.002 inch) 13.050 - 13.068 mm (0.5140 - 0.5145 inch)
2nd O.S. 0.25 mm (0.010 inch) 13.250 - 13.268mm (0.5217 - 0.5224 inch)
3rd O.S. 0.50 mm (0.020 inch) 13.500 - 13.518 mm (0.5315 - 0.5322 inch)