Line & Head · Tue Sep 22
The right trimmer line diameter is the size approved for your machine and head. Use the manual’s recommendation first, then consider how much cutting power and durability your work requires.
Use the line diameter specified in your string trimmer’s manual or printed on its head. If you can’t find that information, identify the trimmer and head before buying line; a size that fits one trimmer may overload another or fail to feed properly.
Look for the recommended line diameter and the maximum diameter allowed. Check both the trimmer manual and the cutting-head instructions, since an aftermarket head may have different requirements from the original one. Don’t exceed the stated maximum, even if thicker line seems more durable.
If the manual is missing, check the manufacturer’s support information using the exact model number. You may also find size information printed on the head or spool. Don’t rely on appearance alone to judge which line will fit.
Husqvarna TitaniumForce Trimmer Line - Commercial Grade Co-Polymer - 1-Pound .080-Inch - Silver$22.97 as of
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Husqvarna String Trimmer line .080-Inch 208ft Spool Titanium Force High Efficiency Long Life Faster Acceleration$16.99 as of
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Oregon 23-180 Gatorline 3-Pound Spool of .08-Inch Professional Round String Trimmer Line, Red$41.82 as of
View on AmazonProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Common diameters include 0.065 inch, 0.080 inch, 0.095 inch, and 0.105 inch, but not every trimmer accepts every size. As a general guide, smaller line is often used for light trimming, while thicker line can be more durable for heavier weeds. The trimmer still needs enough power, and the head must be designed to accept that diameter.
When several sizes are approved for your trimmer, choose the smallest one that handles your usual work. It is often a sensible choice for routine grass and edging. Consider a larger approved size for tougher vegetation only if your manual and head allow it.
Oregon Magnum Gatorline 095 Trimmer Line Heavy Duty, .095" x 50-Foot$12.96 as of
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DY.2ten Heavy Duty Nylon - Steel Grass Trimmer Line 0.095in 49.2ft Round Replacement Strimmer String…$8.59 as of
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Grass Gator Z5095 Zip String Trimmer Line Pro Small Donut 128-Feet x .095$9.60 as of
View on AmazonProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Line that is too thick may not fit through the head or feed openings. Even if it fits, it can put extra load on the trimmer and may reduce cutting performance. Line that is too thin can wear quickly, and some heads may not hold or feed it as intended.
If the line won’t feed, don’t force it through the head. Confirm the diameter, then check the head’s loading instructions. If you’ve already installed an unapproved size, remove it before using the trimmer.
If you can’t confirm compatibility, use the manufacturer-recommended size rather than guessing. A different head may accept other line sizes, but it must be specifically compatible with your trimmer.
No. Thicker line can be more durable for heavier vegetation, but only when the trimmer and head are designed for it. It can overload a trimmer or fail to feed if it exceeds the approved size.
Check the head instructions before doing so. A smaller line may wear faster or feed poorly if the head is not designed to hold it.
Check the trimmer manual, the cutting-head instructions, and any markings on the head or spool. If those are unavailable, look up the exact trimmer model through the manufacturer.