§ How-To
Workshop guides
Bench-tested, step-by-step. Bring your own part.
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Auto-Feed Trimmer Head Not Advancing Line — Troubleshooting Guide
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Choosing Trimmer Line Gauge: 0.065" vs 0.080" vs 0.095"
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Greenworks Trimmer Spool Compatibility: 40V, 60V, and 80V Checks
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How to Measure Your Old Spool to Find a Replacement
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How to Wind a Trimmer Spool (Single & Dual Line)
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How to Wind a Trimmer Spool Without Tangling
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Portland 62567 Trimmer Spool — The Hard-to-Find Part for Harbor Freight Trimmers
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Replace an Auto-Feed Spool (AF-100, Ryobi, Greenworks)
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Ryobi Trimmer Spool Replacement Guide: Line Size, Cap, and Fitment
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Trimmer Head Types: Auto-Feed vs Bump vs Fixed-Line
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Trimmer Line Keeps Breaking? Common Causes and Easy Fixes
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Trimmer Line Won't Feed: A Troubleshooting Checklist
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Trimmer Spool Cap and Cover Replacement: How to Match the Right One