Running out of trimmer line mid-job is frustrating, but knowing how to reload different head types quickly gets you back to work. String trimmers use several head designs, each with specific loading methods.

Identify Your Trimmer Head Type

Bump Feed Heads release more line when you tap the bottom on the ground while running. These are the most common type found on residential trimmers.

Fixed Line Heads use pre-cut line lengths that you manually thread through eyelets. No spooling required, just insert, secure, and trim.

Changing Bump Feed Trimmer Line

Step 1: Remove the Spool Press the tabs on the head cover and twist counterclockwise to remove. Lift out the internal spool, noting how the spring sits underneath for reassembly.

Step 2: Clean the Head Remove old line remnants and clean out grass clippings and debris from the head housing. A clean spool feeds the line smoothly without binding.

Step 3: Load New Line Cut 15-20 feet of trimmer line. Find the anchor slot or hole in the spool center. Insert the line and wind it tightly in the direction indicated by the arrow on the spool (usually counterclockwise). Keep wraps neat and even, avoiding overlapping layers that cause binding.

Step 4: Secure and Reassemble Thread line ends through the eyelets in the head housing. Replace the spool, ensuring the spring seats properly. Snap the cover back on and pull excess line through until you have 4-6 inches extending from each side.

Changing Fixed Line Head String

Step 1: Access the Eyelets Most fixed line heads have exposed holes or eyelets on opposite sides of the head.

Step 2: Thread Pre-Cut Line Cut line to the length specified in your manual (typically 8-10 inches per side). Push line through one eyelet until it extends equally from both sides, or thread separate pieces through opposite eyelets. 

Step 3: Lock in Place Twist the head or push locking tabs (depending on design) to secure line in position. Trim line to 6-8 inches for optimal performance.

Pro Tips for Success

Always use the correct diameter for your trimmer, too thick can damage the motor or clutch. Wind line tightly without overlapping to prevent feeding problems. Keep spare line accessible for quick mid-job reloads. Replace worn trimmer heads when the bump mechanism fails or line feeds inconsistently.

Mastering trimmer line changes for your specific head type means less downtime and more productivity. Stock the right line diameter and style for your trimmer, and you'll be ready for any yard work challenge.