6. CYLINDER HEAD/VALVES Pulsar CK 125 CYLINDER HEAD DISASSEMBLY Remove the valve spring cotters, retainers, springs, spring seats, washers and valve stem seals using a valve spring compressor. · Be sure to compress the valve springs with a valve spring compressor. · Mark all disassembled parts to ensure correct reassembly. Special Valve Spring Compressor Valve Spring Compressor E040 Combustion Chamber Remove carbon deposits from the combustion chamber and exhaust port. Clean off any gasket material from the cylinder head gasket mating surfaces. Be careful not to damage the gasket mating surfaces. INSPECTION CYLINDER HEAD Exhaust Port Check the spark plug hole and valve areas for cracks. Check the cylinder head for warpage with a straight edge and feeler gauge. Service Limit: 0.1mm repair or replace if over VALVE SPRING FREE LENGTH Measure the free length of the inner and outer valve springs. Service Limits: Inner spring : 33.5mm Outer spring : 40.9mm Outer Spring Inner Spring 6-5