2007 Yamaha Apex Factory Service Manual, Page 471Get this manual

2007 Yamaha Apex Factory Service Manual, Page 471

MAINTENANCE SPECIFICATIONS Model Valve dimensions: Valve head diameter Intake Exhaust Valve face width Intake Exhaust Face
in) 0.5 0.9 mm (0.020 0.035 in) Margin Thickness Valve stem diameter Intake Limit Exhaust Limit Valve guide inside diameter
Intake Limit Exhaust Limit Valve-stem-to-valve-guide clearance Intake Limit Exhaust Limit Valve stem runout limit 3.975 3.990
mm (0.1565 0.1571 in) 3.945 mm (0.1553 in) 4.465 4.480 mm (0.1758 0.1764 in) 4.43 mm (0.1744 in) 4.000 4.012 mm (0.1575 0.1580
in) 4.05 mm (0.1594 in) 4.500 4.512 mm (0.1772 0.1776 in) 4.55 mm (0.1791 in) 0.010 0.037 mm (0.0004 0.0015 in) 0.08 mm (0.0031