Echo 73050 Owners Manual v.1 - Manual (Page 11)

9
Service & Maintenance
1. Feed the cutting string through the second
hole on either end of the trimmer head leaving
approximately 8 inches for the cutting surface.
Total recommended string length is 20-1/2
inches.
2. Continue by weaving the cutting string
through the first hole directly beside the
second hole used in Step 1. Pull the cutting
string tight.
3. Loop the cutting string back and feed
through the first hole on the opposite end of
the trimmer head.
4. Feed through the remaining second hole
and pull the cutting string tight. The cutting
strings in the middle two holes should be the
same length. If the length differs, cut to an
even length.
When completed, the trimmer head should
resemble Figure 9.
Cutting String Replacement
Warning: Before inspecting or servicing
any part of the machine, disconnect the
spark plug wire from the spark plug and make
sure all moving parts have come to a com-
plete stop.
Figure 9
Cutting string is available in two thicknesses,
.130 mil (standard) and .155 mil (heavy duty).
The type of string selected is dependent on the
conditions and material being cut. The cutting
string can also be wrapped in a variety of ways.
Refer to the figures below for two examples.
Figure 10
Figure 11
The wrapping method and cutting string thickness
chosen is ultimately based on what is determined
the best performers for the operator.