2007 Yamaha Apex Factory Service Manual, Page 472Get this manual

2007 Yamaha Apex Factory Service Manual, Page 472

MAINTENANCE SPECIFICATIONS Model Valve spring: Free length Intake Exhaust Installed length (valve closed) Intake Exhaust
Piston pin bore inside diameter RX10K, RX10RK, RX10RSK, RXW10K, RXW10SK, RX10MK, RX10MSK 38.90 mm (1.53 in) 40.67 mm (1.60
in) 34.50 mm (1.36 in) 35.00 mm (1.38 in) 82 96 (8.2 9.6 kg, 18.1 21.2 lb) 110 126 (11.0 12.6 kg, 24.3 27.8 lb) 2.5_1.7 mm
(0.067 in) 2.5_1.8 mm (0.071 in) Clockwise Clockwise 19.982 19.988 mm (0.7867 0.7869 in) 19.957 mm (0.7857 in) 22.482 22.488
mm (0.8851 0.8854 in) 22.457 mm (0.8841 in) 20.000 20.018 mm (0.7874 0.7881 in) 20.048 mm (0.7893 in) 22.500 22.518 mm (0.8858