Best type of spark plugs for chainsaws

[SwampDonkey]

I use Champion in my push mower, but not my saws. I can use a Champion for years on that old mower because I don't put a lot of hours on it now that I have a lawn tractor.

[Al_Smith]

I hear these stories of fouled plugs and kind of wonder .I've never experianced a fouled plug on a two cycle engine ever .Including old 50 year old outboard boat motors ran on 16 to 1 mix .

[ely]

my stihl chainsaw will foul a plug, any brand if you look at it wrong. it needs some carb help. my honda tiller motor has a float stuck in it, it fouls the plug also.
we have a welder with a red seal engine on it, at times it will foul all the plugs at the same time, same with the 300 international tractor. the problems all come from the carbs dumping too much gas.

i also have a 175 hp evinrude that will foul a plug or two every now and then. but i think its because the coils drop out on it.

i use boshe in the saws and ngk in the boat and atv.

[Al_Smith]

Oh I 've had a lot of worn out old tractor and car engine foul plugs .Not surprising after 150, 000 miles with the valve seals all but non existant or the rings completely shot .

Even with a good set of rings  tractor and welder engines will foul them out if the low speed jet is set too rich ,given enough time if they idle long enough . It gets set so it will idle good at cold temps so you don't have to half choke it for 10 minutes at 2 below zero .