Hi John
Here is the info you need - Hope it helps.
CHANGING A LINE SPOOL
1. REMOVE THE BATTERY PACK FROM THE TOOL
2. TURN THE TOOL UPSIDE DOWN
3. HOLD THE SPOOL FIRMLY, PRESS IN THE LUGS EITHER SIDE OF THE SPOOL AND TWIST IT ANTI-CLOCKWISE
4. REMOVE THE EMPTY SPOOL AND CLEAN OUT THE SPOOL HOLDER.
5. FEED OUT THE LINE OF THE NEW SPOOL THEN PUSH THE SPOOL INTO POSITION AND TURN IT CLOCKWISE UNTIL THE LUGS CLICK INTO POSITION.
Best regards
Chas
csac, May 2008
