Thanks Bruce...
Yep, I knew running fuel only would ruin the engine long term... But would that still apply for such a short run? You see, I have (yet another) Ryobi that I completely pulled apart, and it has an oily residue inside the bore. I had a rag nearby with some degreaser on it, so I ran my finger inside the bore as an experiment - and it wiped off easily. So obviously it's oil left on the bore surface from the two stroke mix they run on.
So I was thinking that a short run (in seconds) on fuel only before storage might stop the diaphragm hardening (by flushing any fuel/oil mix left in the carby.
Also, I don't mind replacing the mesh screen. I guess I was just wondering why folks don't just clean/wash it and return it into position. Does it get damaged, or does the mesh close up over time, or something?
Last edited by justallan; 13/04/09 04:07 PM. Reason: typo