Well my 4-year old Echo srm-260s, the baddest weed-eater that never quit kept getting harder and harder to start this year. Actually it would start ok but I'd have to let it sit on idle for several minutes before it was warm enough to throttle on up, then it took couple more minutes before the rpm's finally settled, too. And to touch the throttle before it was warm enough, it cut off everytime. Today it dawned on me this weedeater was costing me a yard / day in minutes wasted every yard waiting for this thing... I suppose while it idled up to temp I could've gone around spraying for weeds but I'm just not a mickey mouse type of guy, plus the waste of fuel... I called my dealer from one yard I was on, asked him to set me up a Stihl FS-100Rx 4-cycler, an hour later I got there and picked it up. Man that things is b-b-b-b-bad! TONS of power, awesome sound (almost like a motorcycle), and a light 10.3 pounds... I took off the Stihl handle and put on the Echo D-handle, removed the guard and the shoulder strap and went on to cut some grass. It is just what I needed, I am now looking forward to going to work!