2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 18Get this manual
Maintenance specification Item Oil ring Dimension Dimension T() End gap Side clearance Camshafts Intake (A) Exhaust (A) Intake (B) Exhaust (B) Camshaft journal diameter Camshaft runout limit Valves Valve clearance (cold) Intake Exhaust Head diameter (A) Intake Exhaust Face width (B) Intake Exhaust Seat contact width (C) Intake Exhaust Margin thickness (D) Intake Exhaust Stem diameter Intake Exhaust Guide inside diameter Intake and exhaust Stem-to-guide clearance Intake Exhaust Stem runout limit Valve springs Free length Tilt limit ()
Unit mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in)
Model F90TR 2.382.48 (0.09370.0976) 2.40 (0.0945) 0.200.70 (0.00790.0276) 0.030.15 (0.00120.0059) 36.4836.58 (1.43621.4402) 36.9037.06 (1.45281.4591) 29.9530.05 (1.17911.1831) 29.9230.08 (1.17801.1842) 24.96024.980 (0.98270.9835) 0.03 (0.0012)