EGO STA1700 Guide D'utilisation page 26

Remove the trimmer head
1. Remove the battery pack from the
power head.
2. Press the release tabs on the
trimmer head and remove the lower
cover assembly of the trimmer head
by pulling it straight out (Fig. 11).
3. Remove the cutting line from the
trimmer head (Fig. 14).
4. Wear gloves. Use one hand to grasp
the spool assembly to stabilize it,
and use the other hand to hold a
17 mm socket wrench or impact
wrench (not included) to loosen
the lock nut in the CLOCKWISE
direction (Fig. 15).
5. Remove the lock nut and spool
assembly from the drive shaft
(Fig. 13).
6. Replace with a new trimmer head and mount it by following instructions in the
chapter "Install the new trimmer head".
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STRING TRIMMER ATTACHMENT — STA1700/STA1700-FC
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15