I have a Poulan-Pro weed-eater, model PP131. The pull rope broke and I'm attempting to replace it myself. I've got the weed-eater all taken apart but I'm having difficulty getting the coupling drive removed so I can get access to the pulley. I have to get this coupling off to remove the cover off. This is the link to the parts list of the model I have: http://ordertree-psw.arinet.com/scr...=No&selAssem=3103&mdDescrip=PP131 Gas Trimmer I'm a novice when it comes to this type of thing, but I dodn't think changing a pull rope would be all that difficult. Thanks for the help.