Replacing The Spool - Black & Decker ST7700-CA Instruction Manual

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Figure H
Figure I
Edging

WARNING:
Edger, stones, pieces of metal and other objects can be
thrown out at high speed by the line. The trimmer and
guard are designed to reduce the danger. However,
MAKE SURE that other persons and pets are at least
100 feet (30m) away. Optimum cutting results are
achieved on edges deeper than 2 inches (50 mm).
Do not use this trimmer to create trenches.
Pull the edge guide
 6 
it clicks into place. Ensure it is full engaged and can't be
easily pushed back into the housing before edging.
Using the edge guide, guide the trimmer as shown in
figure L.
Position the edge guide on the edge of the sidewalk or
abrasive surface so the cutting line is over the grass or
dirt area to be edged.
NOTE: The Auto Feed System may not operate correctly if
edge guide is not used.
NOTE: You will experience faster than normal cutting
line wear if the edge guide is positioned too far from the
edge with the cutting line positioned over the sidewalk or
abrasive surface.
To make a closer cut, slightly tilt the trimmer.
6
When being used as an
out of the motor housing
Figure J
Helpful cutting tips
Use the tip of the string to do the cutting; do not force
string head into uncut grass. Use edge guide along such
things as fences, houses and flower beds for best practices.
Wire and picket fences cause extra string wear, even
breakage. Stone and brick walls, curbs, and wood may
wear string rapidly.
Do not allow spool cap to drag on ground or other surfaces.
In long growth cut from the top down and do not exceed
12 inches (304.8 mm) high.
Keep trimmer tilted toward the area being cut; this is the
best cutting area.
The trimmer cuts when passing the unit from the right to
left. This will avoid throwing debris at the operator.
Avoid trees and shrubs. Tree bark, wood moldings, siding,
and fence posts can easily be damaged by the string.
Cutting line / line feeding
Your trimmer uses .065 inch (1.65 mm) diameter, ROUND
nylon line. During use, the tips of the nylon lines will
become frayed and worn and the special self feeding
spool will automatically feed and trim a fresh length of
line. Cutting line will wear faster and require more feeding
if the cutting or edging is done along sidewalks or other
abrasive surfaces or heavier weeds are being cut. The
advanced automatic line feeding mechanism senses when
more cutting line is needed and feeds and trims the correct
 5 
until
length of line whenever it's required. Do not bump trimmer
on ground in attempt to feed line or for any other purposes.

Replacing the spool


CAUTION:
use the appropriate type of cutting line. Ensure that
cutting line is present in both sections of the spool .
1. Unplug trimmer.
2. Press the release tabs on the line hub cap, as shown in
figure K and remove the cap by pulling it straight off.
Figure K
Before you begin trimming, only

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