RE: Ryobi ignition timing
Dave,
Removed the air box earlier and it seemed to knock a couple hundred RPM off the top end.
Next I will tack it with open exhaust and then with a Bennett muffler with everything else stock including the air box and filter.
Would like to see 8000 RPM. Assumption is that maximum HP will be close to weed eater RPM. If it blows it blows.
Bill