Skip to content Skip to navigation menu

Replacing the trimmer head on the 40V ST275 String Trimmer/Edger


Does the trimmer head need to be removed or opened to replace the line?

It depends on which trimmer head your ST275 trimmer/edger is equipped with:

  • If the trimmer/edger is equipped with our standard, easy reload trimmer head (PN 564849), it's not necessary to disassemble the head in order to replenish the trimmer line.
  • If the trimmer/edger is equipped with an Oregon® Gator® SpeedLoad™ head (PN 581647), the disk of pre-wound, self-contained trimmer line is quickly replaced by disassembling the head—simply snap the top half of the head off, discard the spent trimmer line inside, insert a fresh disk of trimmer line, and snap the head back together. To learn more about Gator SpeedLoad, visit

Can other trimmer line be used on the ST275 trimmer/edger?

It is not recommended to use larger diameter or round trimmer line in the ST275 trimmer/edger. The trimmer/edger has been designed to utilize .080″ diameter (2.0 mm) twisted trimmer line for optimal performance and run time. Larger diameter line or round line will decrease performance and run time.


Can another trimmer heads be used on this trimmer?

Yes. Two heads are available:

  • The standard replacement trimmer head (Product Number 564849)
  • The new Gator SpeedLoad replacement head (Product Number 581647)

Using the 40V ST275 String Trimmer and Edger

Using the 40V ST275 String Trimmer and Edger

Trimming and edging your lawn is faster, more convenient, and more comfortable with the 40V ST275 String Trimmer/Edger.

40V ST275 String Trimmer/Edger General Use

Learn how to quickly convert from ST275 from trimmer to edger in seconds.

Gator SpeedLoad Trimmer Head Installation

Learn how to install the Gator SpeedLoad Trimmer Head on your string trimmer for trimmer line reloads in 20 seconds or less.
ST275 String Trimmer Manual

ST275 String Trimmer/Edger Manual

We want to make sure you can get your job done right. Check out the Operator's Manual for the 40V ST275 String Trimmer/Edger.

Part Finder

Find a full selection of the replacement parts you need with the Oregon Part Finder.
Shop Retailers

Shop Retailers

Find retail partners offering Oregon products for online and in-store purchase.
Back To Top