Problem
Possible Cause
Solution
TROUBLESHOOTING
Trimmer vibrates
Set screws for trimmer head is loose
Tighten set screw with T-handle wrench.
Trimmer line lengths are substantially different Adjust trimmer line to approximately equa lengths.
Loose nuts or bolts
Check all bolts and nuts, including engine bolts.
Broken trimmer head
Replace broken part.
Trimmer head does not
Trimmer line not properly attached
Follow instructions on decal or in the Service
retain line
section of the owner’s manual.
Broken line retainer
Replace the trimmer head assembly.
Trimmer line not correct size
Use a 0.155 in. (4 mm) trimmer line.
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