Chainsaw Repair

Put a real chain on the 562 and see what it has.

Think I just found my answer.

Available on the 562 XP is the latest breakthrough feature from Husqvarna, Revboost. This feature allows for acceleration in chain speed over short periods to increase efficiency during cutting, specifically in de-limbing applications. Revboost is controlled by the ignition and enables users to increase to maximum RPMs for about two seconds. It is designed to provide an optimum ratio of power to RPMs without having the engine run wide open for extended periods of time. To make field maintenance easier, both new saws come with captive bar nuts that remain attached to the clutch cover. This clever feature reduces the possibility of losing parts and productivity while on the job. In addition to these new developments, the 555 and 562 XP also incorporate many proven elements of Husqvarna’s existing professional-grade chain saws, such as Husqvarna’s X-Torq engine technology, AutoTune technology, LowVib, Smart Start and Air Injection.

2.  another one I was wondering about.

revolutionary reduced gyro force technology. By reducing the weight of the saws’ key moving parts -- fly wheel, crank shaft and piston -- there is less interior movement in the engine, which creates less gyration.

I think what they mean Niko by less "movement " is less backward tipping of the saw in the operators hands when throttle is opened to WOT. [The bar nose is more stationary while cutting for better control.]
But I think this would be a disadvantage for some of the old school 6 point limbing technique pros, who relied on the saws inertia movements to make delimbing a tree easier for them with less physical effort and muscle movement.

The weight "feels" good, wish I had a scale.  The balance on the other hand is great with a 20 and would be fantastic with a 18.

I can't say for sure yet.  Need more run time but I think they have something here.  Add another half horse and a couple more r's and it should be an amazing saw (562).