Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer LINE FEED FAIL Error Fix: Trimmer Line Will Not Advance

Error code LINE FEED FAIL on the Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer means: Trimmer Line Will Not Advance. The trimmer line does not advance from the bump-feed head when tapping the ground — the line may be melted or fused together inside the spool from heat; the spool may be tangled or overloaded with line; the bump mechanism spring may be broken or the bump knob worn; remove the spool, unwind all line, check for tangles or melting, and rewind properly following the directional arrows on the spool; use the correct line diameter for the head (typically 0.095" or 0.105" for the 525LST)

The most successful fix is "Replace Bump Feed Spring and Bump Knob Assembly" (medium difficulty, ~30 minutes). Estimated DIY cost: $10-$20. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace Bump Feed Spring and Bump Knob Assembly") is rated medium difficulty and takes about 30 minutes. Tools needed: T20 Torx screwdriver, Needle-nose pliers.

DIY cost: $10-$20. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

The Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer has 8 other known error codes, including: AIR FILTER (Air Filter Clogged), CLUTCH SLIP (Clutch Slipping Under Load), CORD WON'T RETRACT (Pull Cord Will Not Retract), DIES AT IDLE (Engine Dies at Idle), EXHAUST CLOGGED (Exhaust Port or Muffler Blocked), and 3 more.