Replacing a wore out trimmer head on an Echo GT-225 trimmer with an interesting designed Echo Speed Feed 400 tap and go trimmer head. This head does not have a traditional spool that you remove from the trimmer head and refill.
these are super tough weed eaters, like you i bought mine back in 2010 or 11 and ive never changed the spark plug or cleaned the filter and it runs great,it was dirty so i took some brake cleaner and sprayed it down and now wouldnt ou know its leaking gas somewhere around the bubble ou push to prime it,so i guess i need a rebuild kit for it,i was cleaning it today and theres 3 hoses that go into the tank the black one that goes up and has like a filter for fuems i guess came out of the tank grommet so i need to see how it goes back on or just order a kit,BUT i wasnt going to do something until i found out theres a tap and go head for it,because the way it was drove me crazy having to stop all sweaty and try to feed the line in those holes and one side was a pain,i took it apart several times a cleaned it but im done,i was going to just buy a new stihl for 179.00 but i dont know i think this one has a lot more to give in life you know.