Thread: which 50-60cc Stihl chainsaw

Originally Posted by StrikerNZ

Interesting to note that running your mix too oily can result in hotter internal temps too. This video uses a reasonably drastic example of 25:1 (compared to 50:1), so a much more exaggerated outcome than say 40 or 45 to 1, but still shows there definitely can be such a thing as too much oil, especially if running under heavy load over the longterm.

https://www.youtube.com/watch?v=9ywMl30_JPI
(Skip to 13ish minutes if you just want the results)

This came up in the staffroom at work- Another way to skin it perhaps is that an oilier mixture has less 'fuel' per ml and is therefore leaner. A leaner mix would run hotter. I fiddled around with ratios and jetting on my KX. Trying to decipher what people meant by a richer/leaner mix was near impossible as it seems to be used both ways - richer = more oil or richer = less oil resulting in richer fuel : oil ratio.

Original question- I have a 365 with a 16" and 20" bar. The 16" is handy and I can get around most things, but the 20" comes out every now and again and the saw keeps up. Originally the 20 chain was set up to cut and the 16 set up the rip rings.