DR Power Walk-Behind Pro (2000 - 2001) - Manual (Page 21)

DR
®
TRIMMER/MOWER
™
Assembly & Operating Instructions 15
Cord Tips
Two thicknesses of cutting cord ship with your DR
®
TRIMMER/MOWER ™ : Heavy-Duty (130
mil) and Extra Heavy-Duty (155 mil). Because conditions and vegetation vary so much,
experiment with the different cord weights in order to discover what works best for your
particular mowing and trimming situations. Here are a few things to keep in mind:
·
The best trimming performance will usually come from using the smallest diameter cord
(which is still capable of cutting the material at hand), combined with the fastest engine
speed. When more power is needed for thicker growth such as berry canes, brambles, thistles
or ragweed, you may want to use the Extra Heavy-Duty (155 mil) cord in combination with
the highest engine speed.
·
Move slowly into thick growth. If there are woody weeds in the material being cut, the
cutting cords may wrap around the stalks they cannot cut and pull away from the trimmer
head.
F
Reminder: The ends of the cutting cords do the cutting.
·
To increase the cutting swath, install each cord slightly offset, with one side about and inch
longer than the other. Be careful not to offset the cords by more than an inch. Doing so may
cause the cords to hit the wheels.
·
Please note that installing more than two cords at a time does not improve trimming
performance—in fact it can lessen it. Adding additional cords creates drag on the trimmer
head, robs the engine of power and may cause wrapping. Installing two cords, 180 degrees
apart, is the best method for optimal trimming performance.
·
If you buy cutting cord in rolls, cut it in 23" lengths.
·
When replacing cords, do it one at a time and use the old cord to mark the position for the
new cord to be installed.
·
If the cord breaks off flush at the line plate, use the new cord to push the old cord out.
·
Storing the cord in a plastic bag with a damp sponge or cloth will help keep it pliable. You
can also soak your cutting cord in a bucket of room temperature water for a few days before
use to make it more pliable.