DR Power Walk-Behind Pro (1985 - 2000) - Manual (Page 22)

20 DR
®
TRIMMER/MOWER
™
Assembly & Operating Instructions
The trimmer head and the cutting cords also tilt slightly when in the PTA ™ mode so you can edge
and trim along gardens, paths and driveways.
When using your PTA ™ along garden edges, fences, and buildings, we recommend making your first
pass with the DR
®
TRIMMER/MOWER ™ in the regular mowing position, staying 4 to 8 inches from
the obstacle. Then, return for another pass with the machine cutting in the left or right PTA ™ mode.
Mow-Ball
™
Support
Allow the front end of the machine to rest lightly on the Mow-Ball
™
Support as you are trimming.
The Mow-Ball
™
Support should glide on the ground as you maneuver the machine.
In order to achieve the best and smoothest cut, do not lift up on the handlebar while operating your
DR
®
TRIMMER/MOWER ™ . Lifting the handlebar causes weight to be forced down on the Mow-
Ball
™
Support. This uses more energy, slows down the cutting, and produces a less than satisfactory
cut. Ideally, the Mow-Ball
™
Support should lightly rest on the ground while the wheels balance
most of the weight of the machine.
Cutting Cords
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 Green (155 mil) cord in combination with the highest engine speed.
If Cords Slip
There are several options for installing the cutting cords. Experimenting in different conditions with
different cutting cords is a good way to find the best method. Below are some suggestions:
·
Push the cord ends IN through the two end holes in the trimmer head plate. The bottom of the U
formed by the cord should be toward the outside. Next, pull the two ends back through the
middle hole, then UNDER the bottom of the U and pull them tight.
·
When using the standard installation method, wrap the cutting cord through the middle loop
twice (the thicker, green cord is stiff, but it can be done) as shown in Figure 23 . This will help
prevent the cords from slipping.
Figure 23