1. GENERAL INFORMATION MXU 550EXi/MXU500i Item Q`ty Thread dia. Torque Remarks (mm) kgf-m (N-m, lbf-ft) CYLINDER HEAD: Cylinder head bolt 4 10 4.8 (48, 34.6) Apply oil Cylinder head bolt 9 8 2.3 (23, 17) Apply oil Cylinder head nut 2 6 1 (10, 7) Cylinder head cover 4 6 1 (10, 7) Breather separator bolt 3 6 1.3 (13, 9) Cam chain tensioner bolt 2 6 1.2 (12, 8.6) Tensioner sealing bolt 1 10 1 (10, 7) Rocker arm shaft 2 18 4.5 (45, 32.4) Apply oil Chain guide pivot bolt 2 8 2 (20, 15) Water joint bolt 2 6 1.2 (12, 8.6) CYLINDER: Cylinder bolt 2 6 1 (10, 7.2) DRIVE/DRIVEN PULLEY: Drive pulley nut 1 20 14 (140, 100.8) Apply oil Wet clutch nut 1 25 14 (140, 100.8) Driven pulley nut 1 16 10 (100, 72) Apply oil Driven pulley assembly plate nut 1 36 7.5 (75, 54) TRANSMISSION: Crankcase bolt 19 6 1.2 (12, 8.6) Apply oil Drive bevel gear nut 1 20 14 (140, 100.8) Apply oil Driven bevel gear nut 1 20 14 (140, 100.8) Apply oil Stopper lever bolt 1 8 2.5 (25, 18) Stopper lever boss nut 1 12 3 (30, 21.6)) Shift came stopper plug 1 20 4.8 (48, 35) Output shaft bearing nut 1 85 11 (110, 79.2) Apply oil Drive shaft bearing bolt 4 8 3 (30, 21.6) STARTER SYSTEM: Starter pulley nut 1 14 5.5 (55, 40) 1-13