First of all,
ive been browsing for a few days, spent ALOT of hours reading, and searching.
I recently bought an OLD stihl 240av, from a guy that works at a stihl deal/repair place.
he swapped a 026 cylinder and piston.
saw runs great, starts and idles perfect.
After reading here, I realize that the saw must be a 024super, since it shares the stroke length with the 026.
but the cowl only say 240 av woodboss.
But I guess it could have been swapped?
I removed the muffler to inspect the piston and bore, looks great.
while I had apart I did some reading here on muffler mods.
SO, I matched the gasket, and drilled a couple of holes in both factory baffles, muffler looks stock outside, cant tell much difference in the sound.
my question now, do I need to rejet the carb?
or adjust the High speed jet?
I richened it a BIT, about 1/8 of a turn, and tested it. stated easy, revved good, idled fine.
I shut it off ( no cutting, dark outside already)
do I need to worry about anything else?
ive got a tach, I COULD measure rpms and tune that way, but I figure there might be some experience here to someone who has tuned a 024 with a larger bore and modded muffler?
Thank you in advance, and again, this site is GREAT, good folks, and the best info out there for this type of stuff.