String Trimmers

I just bought a 224L Husqvarna weed whacker. Love it but, can not seem to find a harness for that model number. Even on their home website. Every thing seems to relate to the 223L model. does anyone know if those will also fit the 224L ? I would be happy to even get just a strap. Starts to feel a little heavy after 45 minutes. Hope someone can advise me. thank you, Pat R.