How do I replace the spool on the GL350 trimmer?

Press the spool cover lock button (13) and remove the spool cap (11) from the spool compartment (18). Pull out the empty spool (15), clean any dirt or grass from it and the compartment, then insert the new spool by pushing it in and rotating slightly until seated. The cutting line should extend approximately 136mm (5-3/8 inches) from the housing. Align the spool cap tabs with the compartment slots and press the cap on until it locks into place. (Page 10)