Install the new trimmer head
1. Before installing the new trimmer
head, make sure that the flange is
located on the drive shaft with the
bulge facing away from the base
(Fig. 20) and the flange cover is
snug against the flange, with its flat
surface facing outwards (Fig. 21).
2. Mount the upper cover onto the
flange cover first, and then mount
the spool onto the drive shaft.
Before mounting the locking nut,
make sure that when the spool is
manually rotated, the drive shaft
rotates, also.
3. Rotate the spool to align the slot in
the flange with the hole in the gear
case (see Fig. 16).
4. Insert the hex wrench provided
into the aligned holes to act as a
stabilizer (see Fig. 17).
5. Wear gloves to hold the gear case
and the stabilizing hex wrench
with one hand. With the other
hand, use the multi-function
wrench provided to tighten the nut
COUNTERCLOCKWISE (Fig. 22).
6. Mount the lower cover assembly with the spring located inside (see Fig. 12 & 11).
7. Follow the instructions in section"LOAD NEW CUTTING LINE" to mount the
trimmer line.
24
STRING TRIMMER ATTACHMENT — STA1500/STA1500-FC
20
Bulge facing away from the base
21
Flat surface facing outwards
22
Flange
Multi-function
Wrench Provided