Forty-eight exact model/head records across thirty-six model families · latest records checked 2026-10-20

Trimmer line size by model and head

This growing index links model/head-specific manufacturer records across US, Canadian, North American, and UK sources. It is not a universal brand chart. A record applies only when the model, market, and fitted head match its source.

Browse source-backed records

Forty-eight records include multiple documented heads for STIHL and EGO models, eight exact ECHO SRM/Speed-Feed 400 mappings, 11 exact Greenworks 2910602 model/product-number mappings, and separate regional scopes for selected products. This remains a partial catalog, not a representation of all popular trimmers. The project’s search dataset reported no row for the sampled phrase “string trimmer line size by model”; that absence is not proof of zero demand.

Coverage rules

• A line diameter appears only when an official source states it for the model or relevant head.
• “Maximum” and “compatible diameters” are kept distinct from a single recommended line.
• Omitted shape/material means the cited product page did not state it. Do not infer a round or twisted profile.
• Regional or serial conflicts are flagged rather than harmonized by guesswork.
• Unknown models and non-covered heads return no recommendation.

Every lookup result links its own manufacturer source; record-level pages are available for the seed models. Each record carries its own source check date; the latest added records were checked 2026-10-20. Publication dates are shown only where the cited source displays one.