When I was servicing saws, our rule was that the chain had to slack enough so when you lifted at the center of the bar the "cogs" at the lfit point would just clear the blade. One thing, as you cut when the chain warms up it gets looser.
wombat
_______________________________________________
Elec-trak mailing list
Elec-trak cosmos phy tufts edu
https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak