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Use the manufacturer’s replacement string for best perfor- mance. 1. Stop the engine and disconnect the sparking plug wire. Hold the string head and unscrew the spool retainer. Turn clockwise. 2. Remove the empty spool from the string head. Keep the spring attached to the spool. 3. To install the new spool, make sure the two strings are captured in the slots opposite each other on the new spool. Make sure the ends of each string are extended approximately 152 mm (6 in) beyond each slot. 4. Threa