This is the same engine described in the tread[link=http://www.rcuniverse.com/forum/fb.asp?m=3082557]Poulan 25 from FL trimmer [/link]. On MA 16x6 (classic) it turned 7300 with magneto idling to 1800rpm. With glow plug i went to 7400 rma with idling 1600rpm. I have also [link=http://m.modelersinc.home.comcast.net/poulan.wmv]test run video[/link] over there.