SawTroll
Information Collector
The 261c ported is the perfect all around firewood saw for small to medium trees. A ported 346 is ultimate screaming screaming limbing saw. The 261 is like a handy small pickup truck that works perfectly for it intended use. The 346 is like driving an exciting race car....just plain fun when limbing. The 550 may actually handle even better but just ever so less exciting that a perfectly tuned and ported 346.
The issue with the 261 is that it feels like a larger saw than 50cc, despite that is what it is. If you are just blocking firewood logs in the yard it isn't much of an issue, but it surely will be if you take it into the woods.
The MS261 simply isn't what a 50cc saw should be - large, inboard clutch and a little heavy makes it irrelevant in that class, imo. Slow at revving up as well, unless it is modded.