ORIGINAL: bubbagates
Ryan,
Typically on a new DA50 you want a 22X8 like a NX, Mezjlik or PT model props or a Vess 22B or even the 22A. An MSC will not work as it is a wide blade and loads the engine too much.
During breakin you want the engine to burble a bit on the low end. At 5 gallons on both of mine I turned a 22x8 PT model CF prop at 7150 and at 7 galoons I could turn that same prop at 7300. I'm at 15 gallons and can turn a PT model 23x8 at 6800 and still be at 180 degrees.
Do you know what temps and rpm numbers you are at and the color of the plug.
Well.....hopefully I didn't mess anything up then. I am running the 23 x 8 which is what I was sold by DA when I bought the engine new. I have a 22 x 8 Menz standard here, should I use that now, or at this point, leave it alone?
In regards to RPM's, no, I don't have this info. I tached it when I first started, but I have not since it has been running so well. The prop tips are going super-sonic now. The plug color is good. It is a light brown to a greyish brown in color, if that makes sense.
Which oil are you running in yours at this point? Did you use Lawnboy Ashless and if so, when did you make the switch?
Thanks Bubba.....
Ryan