6. CYLINDER HEAD/VALVES DINK 50/ 125 TORQUE VALUES (DINK 125) Cylinder head cover bolt 1.2 kgf-m (12 N-m, 8.6 lbf-ft) Tensioner mounting bolt 0.9 kgf-m (9 N-m, 6.5 lbf-ft) Tensioner sealing bolt 0.9 kgf-m (9 N-m, 6.5 lbf-ft) Cylinder head cap nut 2.2 kgf-m (22 N-m, 15.8 lbf-ft) Apply engine oil to threads Cylinder head bolt 1 kgf-m (10 N-m, 7.2 lbf-ft) SPECIAL TOOLS Valve spring compressor A120E00040 TROUBLESHOOTING · The poor cylinder head operation can be diagnosed by a compression test or by tracing engine top-end noises. Poor performance at idle speed White smoke from exhaust muffler · Compression too low · Worn valve stem or valve guide · Damaged valve stem oil seal Compression too low · Incorrect valve clearance adjustment Abnormal noise · Burned or bend valves · Incorrect valve clearance adjustment · Incorrect valve timing · Sticking valve or broken valve spring · Broken valve spring · Damaged or worn camshaft · Poor valve and seat contact · Worn cam chain tensioner · Leaking cylinder head gasket · Worn camshaft and rocker arm · Warped or cracked cylinder head · Poorly installed spark plug Compression too high · Excessive carbon build-up in combustion chamber 6-5