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3. Remove the battery pack if it has been installed
onto the power head in the NOTICE after step 2. And
follow the steps specified in step 2 to reinsert and
align the cutting line.
4. Install the battery pack onto the power head.
5. Press and hold the line-loading button to wind
the line into the trimmer head continuously until
approximately 15 cm of the line is showing on each
side. (Fig. G).
6. Push down on the trimmer head while pulling on the
lines to manually advance the line in order to check
for proper assembly of the cutting line.
NOTICE: In case the line is pulled into the trimmer
head by accident, open the head and pull the
cutting line out from the spool. Follow the section
"RELOADING THE CUTTING LINE" in this manual to
reload the line.
RELOADING THE CUTTING LINE
When the cutting line breaks from the eyelet or the
cutting line is not released when the trimmer head is
tapped, you will need to remove the remaining cutting
line from the trimmer head and follow the steps below
to reload the line.
1. Remove the battery pack.
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. H).
3. Remove the cutting line from the trimmer head.
4. Take the spring out of the spool assembly, if
necessary. Save it for reassembling.
5. Insert the spring into the slot in the lower cover
assembly (Fig. I).
6. With one hand holding the trimmer, use another hand
to grasp the lower cover assembly and align the
slots in the lower cover assembly with the release
tabs (Figure J). Press the lower cover assembly until
it snaps into place, at which time you will hear a
distinct click sound (Fig. K).
7. Follow the instructions in the "LINE REPLACEMENT"
section to reload the cutting line.
TRIMMER HEAD REPLACEMENT
WARNING:
If the head loosens after it is fixed in
position, replace it immediately.
Never use a trimmer with a loose cutting attachment.
Replace a cracked, damaged or worn out cutting head
immediately, even if damage is limited to superficial
cracks. Such attachments may shatter at high speed and
cause serious injury.
Familiarize yourself with the trimmer head (Fig. L).
Fig. L parts description see below:
L-1 Shaft
L-6
L-2 Bushing(2)
L-7
L-3 Upper Cover
L-8
L-4 Circlip
L-9
L-5 Spool Retainer
L-10
Remove the trimmer head
1. Remove the battery pack.
2. Press the release tabs on the trimmer head and
remove the lower cover assembly of the trimmer
head by pulling it straight out.
3. Remove the cutting line from the trimmer head.
4. Take the spring out of the spool assembly, if
necessary. Save it for reassembly.
5. Wear gloves. Use one hand to grasp the spool
assembly to stabilize it, and use the other hand to
hold a 13mm impact wrench (not included) to loosen
the nut in a CLOCKWISE direction (Fig. M).
6. Remove the nut, washer and spool retainer from the
motor shaft (Fig. L).
7. Use circlip pliers (not included) to remove the circlip.
Remove the upper cover and two bushings from the
motor shaft (Fig. L).
8. Replace with a new trimmer head and mount it in
following steps.
Install the new trimmer head
1. Mount the two bushings on the motor shaft.
2. Align the flat slot in the upper cover with the flat in
motor shaft and mount the upper cover into place
(Fig. N).
Fig. N parts description see below
N-1 Flat
N-2
3. Mount the circlip, spool retainer, and washer in that
order (Fig. L). Use an impact wrench on the nut to
tighten it COUNTERCLOCKWISE.
4. Following steps 4 and 5 in "RELOADING THE CUTTING
LINE" section in this manual to mount the lower
cover assembly.
5. Follow the instructions in "LINE REPLACEMENT"
section in this manual to reload the cutting line.
6. Start the tool to see whether the line trimmer
will work normally. If it does not, reassemble as
described above.
LINE TRIMMER ATTACHMENT — STA1600
EN
Washer
Nut
Spring
Cutting Line
Lower Cover Assembly
Flat Slot
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