A 38 min 'timelapse' video of a rebuild/restore on one of these saws; he does make one avoidable error; in busting the carby/barrel insulator, but fortunately has the capability to reproduce that item;
BTW, be sure to put a dab of grease, or a couple of drops of engine oil, on the needle roller bearing inside the clutch/sprocket unit, when reassembling it.
Cheers, Gadge
"ODK Mods can explain it to you, but they can't understand it for you..."
"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."