6. CYLINDER HEAD/VALVES STRYKER 125/150 CYLINDER HEAD REMOVAL Remove the two cylinder head bolts to remove the cylinder head. Bolt 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 Valve Spring Compressor Attachment Remove carbon deposits from the Combustion Chamber combustion chamber and exhaust port. Clean off any gasket material from the cylinder head mating surface. Be careful not to damage the cylinder head mating surface. Exhaust Port 6-8