Sometimes it is due to equipment malfunction, but most often it is due to operator error and underestimating what is needed. Light grass can use a cheaper trimmer with thinner line. Thicker weeds, small twigs, and especially areas around fences, namely chain link, can eat up string quickly if the operator gets too close to the edges and chews up the string. These areas need a heavier duty trimmer unit with thicker string to do the job effectively.
Answers & Comments
Sometimes it is due to equipment malfunction, but most often it is due to operator error and underestimating what is needed. Light grass can use a cheaper trimmer with thinner line. Thicker weeds, small twigs, and especially areas around fences, namely chain link, can eat up string quickly if the operator gets too close to the edges and chews up the string. These areas need a heavier duty trimmer unit with thicker string to do the job effectively.