Good morning
I have an engine from this chainsaw, I have take a short block, and have bought new piston , rings, and ball bearings that support crankshaft.
Comparison with my Homelite 38 cc, the Homelite needle bearings is like a toy.
German quality , two rings, big needle bearings on rod, excelent quality, properly cared last for your grandson.
I am not converted it yet, but have muuuuch better quality than homelite.
It is in the same level of quality of best japanese chainsaw, I know I have two Echos.
For use in chainsaw, very good.
For use like conversion engine for airplanes, nice.
Very small quantity Stihl chainsaws converted in this forum because this engine is very expensive.
Happy landings
Jose