madstone
ArboristSite Lurker
I have a ms 390 that has a muffler Mod I have a run abilty issue with the saw I adjusted the low end so the saw finnally idles and adjusted the high end so the saw runs out good at high idle. with a plug check after a full tank of fuel ran through it shows a reading of tannish white brown. my promblem is, is when i let off the throttle the saw countinues to run at full throttle for 10-15 secs and then idles down to run normal. it also is extremly hard to start when cold. any help on this would be greatly appreciated cause it has me stumped.