2-18TIGHTENING TORQUES SPECYamaha bondNo.1215TIGHTENING TORQUESENGINE TIGHTENING TORQUESItem Fastener Thread Q’ty Tightening torque RemarksItem Fastener size Q ty Nm mkg ftlb RemarksSpark plugs – M10 4 18 1.8 13Cylinder head Bolt M10 10 1st 192nd 501.95.01436Bolt M6 2 12 1.2 8.7Camshaft caps Bolt M6 20 10 1.0 7.2Cylinder head cover Bolt M6 6 12 1.2 8.7Camshaft cap oil check bolt Bolt M8 1 20 2.0 15Air indication system reed valvecoverBolt M6 4 10 1.0 7.2Air-cut valve stay Bolt M6 1 10 1.0 7.2Camshaft sprockets Bolt M7 4 20 2.0 15Connecting rod caps Nut M7 8 15 + 150 15 + 150 15 + 150Generator rotor Bolt M12 1 75 7.5 54Timing chain tensioner Bolt M6 2 12 1.2 8.7Timing chain tensioner cap bolt Bolt M6 1 7.0 0.7 5.1Thermostat cover Bolt M6 2 12 1.2 8.7Coolant hose joint Bolt M6 2 10 1.0 7.2Water pump cover Bolt M6 2 10 1.0 7.2Water pump Bolt M6 2 12 1.2 8.7Thermo sensor Bolt M12 1 18 1.8 13Coolant hose drain bolt(water pump)Bolt M6 1 10 1.0 7.2Radiator and frame Bolt M6 2 7.0 0.7 5.1Radiator stay and crankcase Bolt M6 1 10 1.0 7.2Oil pump cover Bolt M6 3 12 1.2 8.7Oil pump Bolt M6 3 12 1.2 8.7Oil pan Bolt M6 12 12 1.2 8.7Oil pan (center) Bolt M6 1 12 1.2 8.7Oil cooler Bolt M20 1 63 6.3 46Engine oil drain bolt Bolt M14 1 43 4.3 31Oil filter union bolt Bolt M20 1 70 7.0 51Oil filter – M20 1 17 1.7 12Oil pump chain guide Bolt M6 2 12 1.2 8.7Oil pipe Bolt M6 2 12 1.2 8.7Throttle body joint Bolt M6 8 10 1.0 7.2Air filter case cover Screw M5 6 1.2 0.12 0.9Throttle body and throttle body joint Clamp M4 4 3.0 0.3 2.2Throttle body and air filter case Clamp M5 4 3.0 0.3 2.2Exhaust pipe and cylinder head Nut M8 8 20 2.0 15Exhaust pipe and exhaust pipe stay Bolt M8 1 20 2.0 15Catalyst pipe and catalyst pipe stay Bolt M8 1 20 2.0 15Muffler joint Bolt M8 1 20 2.0 15 See NOTE 1Catalyst joint Bolt M8 1 20 2.0 15 See NOTE 1Exhaust stay and frame Bolt M8 1 34 3.4 25Catalyst pipe stay and frame Bolt M8 1 20 2.0 15Muffler stay and frame Bolt M8 2 20 2.0 15