So what is your theory as to how the saw went from running perfectly to becoming unusable within 1 tank immediately after changing the spark plug? The dealer said it looked like sawdust damage. And sawdust gets pretty hard if you partially burn it. Before stone arrowheads and spear tips were invented, people used to flame-harden sharpened sticks.
If there is no knocking, higher octane will not have any benefit.
Guys, this happened within 1 tankful after changing the spark plug. The new plug was an OEM replacement, properly gapped. The fuel was the same as I had been using for years, and it worked fine in the new 500i that replaced it. I do know that some sawdust got in when I removed the old plug. I figured it would just blow out quickly. I won't make that mistake again. I cannot think of another plausible explanation.
We will never know without pics!
More like over the cliff. I do wish I had pictures. But seriously, the change was dramatic. It had plenty of power before the change. I doubt it had worn out much from normal use, as I am guessing the saw was about 10 years old. I normally cut about 6 cords per year. I don't think the 441C would wear out in 60 cords of use, which is probably around 120 hours running time.
Independent nonaffiliated researcher of such things says 100:1 raises octane by 30 points/ 3 full octane. I agree, probably makes no difference unless you've got some really low rated gas or cutting in hot weather.
I put in my 266XP and it gave it a little shot in the shorts!
You don't run Av gas with Lead, do you?
I put in my 266XP and it gave it a little shot in the shorts!
I'm reading something called MMT is preferred.
Erhh both?
