How to fix GreenWorks Trimmer head that won't advance line?
- VVictoria AdamsAug 3, 2025
If the trimmer head on your GreenWorks Trimmer isn't advancing the line, there are a few things to check. First, stop the trimmer, remove the battery, and clean the motor shaft and trimmer head, as grass may be binding them. If there isn't enough line on the spool, replace the cutting line. Also, a dirty trimmer head can cause problems, so remove the battery and clean the spool, spool retainer, and spool base. Tangled line can also be the culprit; remove the battery, remove the line from the spool, and rewind it. If the line is too short, remove the battery and pull the lines while alternately pressing down on and releasing the bump knob. Damaged spool cover also can cause this problem, change broken spool cover.