How to Replace the Trimmer Head on a Husqvarna 223L Trimmer Turn off the trimmer, if it has been running, and let it cool for 10 minutes. Grasp the base of the trimmer head with one hand and the cover with the other. Turn the head until one of the holes in the shaft behind it lines up with the hole in the gear housing. Click to see full answer. Simply so, how do I remove the head from my Husqvarna trimmer? How to Remove the Head on a Husqvarna Trimmer Locate the gearbox near where the trimmer head and shaft connect. Insert an Allen wrench or other object into the hole. Grasp the head of the trimmer and begin twisting. Perform any maintenance or prepare a replacement head for installation. Likewise, what is a fixed line trimmer head? Fixed head systems use individual lengths of line that are loaded or threaded into the trimmer one at a time as needed. Pros of fixed head systems: Fixed head systems tend to be best suited to larger, more commercial trimmers that use, thick, tougher string. Similarly, it is asked, can I put a blade on a Husqvarna 128ld? Husqvarna designed these units without blade capabilities and has never offered a metal blade or adapter to install on this unit. If you feel you need the capabilities of a metal blade you should look at the larger 300 series of trimmers as you can use a grass blade on these.How do you remove a Ryobi trimmer head? How to Remove the Head on a Ryobi Trimmer Invert the trimmer, and stand it vertically with the cutting head at the top. Loosen the “bump knob” or “bump head” by unscrewing it using a counterclockwise turning motion. Remove the inner string reel from the interior of the cutting head and set it aside as well. Grasp the shaft housing firmly with your left hand.