Black & Decker ST4500 Instruction Manual page 13

Trimming (Fig. K, L)
1. With the trimmer on, angle it and swing side to side as
shown in Fig. K.
2. Maintain a cutting angle of 5 ° to 10 °. Do not exceed 10 °.
3. Cut with the tip of the line.
4. Maintain a minimum distance of 24" (610 mm) between
the guard and your feet as shown in Fig. L.
Convert to Edging Mode (Fig. A, K, L)

WARNING:
power source before making any adjustments.
The trimmer can be used in trimming mode or edging mode
to trim overhanging grass along lawn edges and flower beds.
1. To operate in edge mode, hold the trimmer with one
hand on the collar 7
indicated by the arrow and with the other hand rotate
the motor housing 9
switch end) until it stops.
2. Let go of the collar 7
edger position.
3. To return to the trimming position, hold the trimmer with
one hand on the collar
indicated by the arrow and with the other hand rotate
the motor housing 9
original position and then release the collar
it into position.
nOTE: You will experience faster than normal cutting line
wear if the trimmer line is positioned directly over the
sidewalk or abrasive surface.
Edging Mode Operation (Fig. A)

WARNING:
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' (30 m) away. Optimum cutting results are achieved on
edges deeper than 2" (50 mm).
• Do not use this trimmer to create trenches.
• Using the edge guide
• Position the edging guide on the edge of the sidewalk
or abrasive surface so the cutting line is over the grass or
dirt area to be edged.
• To make a closer cut, slightly tilt the trimmer.
Helpful Cutting Tips (Fig. N)
• 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
other surfaces.
Disconnect the plug from the
, push it towards the direction
clockwise (when viewed from the
. The tool is now locked in the
7 , push it towards the direction
counterclockwise back to its
7
When being used as an edger,
10 , guide the trimmer.
19 to drag on ground or
• In long growth, cut from the top down and do not
exceed 13" (330 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 left to
right. 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" (1.65 mm) diameter, round nylon
line. During use, the tips of the nylon lines will become frayed
and worn. 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.
Clearing Jams and Tangled Line (Fig. N)

WARNING:
the power source before making any assembly,
adjustments or changing accessories. Such preventive
safety measures reduce the risk of starting the
appliance accidentally.
From time to time, especially when cutting thick or stalky
weeds, the line feeding hub may become clogged with
sap or other material and the line will become jammed as a
result. To clear the jam, follow the steps listed below.
to secure

CAUTION:
the cutting line protrudes beyond the trimming blade,
cut it off so that it just reaches the blade.
1. Disconnect the plug from the power source
2. Press the release tabs
remove the spool cap from the spool housing
3. Pull the nylon line spool out and clear any broken line or
cutting debris from the spool area.
4. Fit the spool onto the appliance as described in
Replacing Spool Assembly.
Replacing Spool Assembly (Fig. M—P)

WARNING:
recommended by BLACK+DECKER for use with this
appliance could be hazardous.

WARNING:
or any accessory or attachment other than those
recommended by BLACK+DECKER on this trimmer/
edger. Serious injury or product damage may result.
Reload nylon line (either bulk or prewound replacement
spool) as shown in this manual.
USE ONLY .065" (1.65 mm) DIAMETER ROUND NYLON
MONOFILAMENT LINE. Do not use serrated or heavier gauge
line, as they will overload the motor and cause overheating.
Disconnect the plug from
To avoid appliance damage, if
18 on the spool cap 19
12
The use of any accessory not
Do not use any blades,
English
, and
.
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