2-5MAINTENANCE SPECIFICATIONS SPECPart to be tightened Thread size Q’ty Tightening torqueNm m•kg ft•lbSpark plug M14 × 1.25 1 20 2.0 14Cylinder head (nut) M 8 × 1.25 6 25 2.5 18(stud) M 8 × 1.25 6 13 1.3 9.4Cylinder (nut) M10 × 1.25 4 35 3.5 25(stud) M10 × 1.25 4 13 1.3 9.4Power valve :Holder M 5 × 0.8 2 6 0.6 4.3Link rod M 5 × 0.8 2 6 0.6 4.3Push rod M 5 × 0.8 1 5 0.5 3.6Thrust plate M 5 × 0.8 1 6 0.6 4.3Side holder M 5 × 0.8 4 4 0.4 2.9Link lever M 4 × 0.7 1 4 0.4 2.9Pulley M 4 × 0.7 2 4 0.4 2.9Cover M 5 × 0.8 4 4 0.4 2.9Governor fork M 4 × 0.7 2 5 0.5 3.6Housing M 5 × 0.8 4 5 0.5 3.6Impeller M 8 × 1.25 1 14 1.4 10Water pump housing cover M 6 × 1.0 4 10 1.0 7.2Coolant drain bolt M 6 × 1.0 1 10 1.0 7.2Radiator M 6 × 1.0 6 10 1.0 7.2Radiator hose clamp M 6 × 1.0 8 1 0.1 0.7Air filter element M 6 × 1.0 1 2 0.2 1.4Carburetor joint M 6 × 1.0 5 10 1.0 7.2Air filter case M 6 × 1.0 2 4 0.4 2.9Air filter joint M 5 × 0.8 5 1 0.1 0.7Reed valve M 3 × 0.5 4 1 0.1 0.7Exhaust pipe M 6 × 1.0 2 12 1.2 8.7Exhaust pipe stay (front) M 8 × 1.25 1 25 2.5 18Exhaust pipe stay (rear) M 6 × 1.0 1 12 1.2 8.7Silencer (front) M 6 × 1.0 1 12 1.2 8.7Silencer (rear) M 6 × 1.0 1 7 0.7 5.1Fiber (silencer) M 6 × 1.0 2 10 1.0 7.2Crankcase M 6 × 1.0 11 14 1.4 10Crankcase cover (left) M 6 × 1.0 5 8 0.8 5.8Chain cover M 6 × 1.0 2 8 0.8 5.8Crankcase cover (right) M 6 × 1.0 9 10 1.0 7.2Bearing plate cover (drive axle left) M 6 × 1.0 2 10 1.0 7.2Bearing plate cover (main axle right) M 6 × 1.0 2 10 1.0 7.2Holder M 6 × 1.0 2 10 1.0 7.2Oil drain bolt M12 × 1.5 1 20 2.0 14Oil check bolt M 6 × 1.0 1 10 1.0 7.2Kick starter M 8 × 1.25 1 30 3.0 22Ratchet wheel stopper M 6 × 1.0 2 10 1.0 7.2Clutch cover M 6 × 1.0 6 10 1.0 7.2Primary drive gear M10 × 1.25 1 55 5.5 40Clutch boss M20 × 1.0 1 75 7.5 54
