Oil ratio and how often you tune

[jackjcc]

Has anybody noticed that running a higher oil ratio has led to the saw being more susceptible to environmental conditions? I feel I tweak more frequently and when there is a large swing in temp I've had saws that needed large adjustments. I run a modest 40:1 stihl silver. Before I ran 50:1 dyno cheap stuff.

I'd attribute some to being more familiar with saws, but I've had to make much larger adjustments since switching.

 

[treesmith]

I've been keeping an eye on some saws during break in, otherwise I hardly tune anything

Run 32/40-1

 

[jackjcc]

I get pretty massive temp swings up in northern MN. Some of my saws seem more susceptible, notably my ms250. 036 and 028 seem to have fewer adjustments.

 

[sunfish]

I run 32:1 and rarely re-tune a saw once I get it like I like it.

 

[jackjcc]

I'm probably being too picky. I was just curious if more oil made the saw react more to temp changes.

 

[Homelite410]

I don't re tune too often, but I always listen for the tune!

 

[super3]

If you are tuned near the upper limit of 4 stroke as well as pig rich,( which neither is going to produce the most power) the saw will react more to temp swings.

 

[singletrack100]

I haven't noticed to much need with slight ratio or oil manufacture differences. Elevations get me: I live at 7140' ASLand usually cut wood for heat anywhere from 6500'-9000' ASL, and work saws on fires from 1000'-10,000' ASL. I definately listen and feel for the tune!

Duane

 

[fearofpavement]

I run saws a bit rich after a rebuild and then lean them up after a few tanks. Rarely adjust them after that.

 

[ChoppyChoppy]

I run 50:1 and usually use 100LL. It keeps longer than normal gas. Since I don't use much saw gas anymore it's not a bad thing.

This year I used maybe 1o gallons, 99% of my cutting is done with the feller buncher and firewood processor. I use the saws for the odd hand falling jobs here and there or to limb stuff the delimber didn't get, or to get a log in pieces so it won't jam up on the firewood processor.
100LL is easy to get up here and not much more than high test gas so I figure what the hay.

Last year my 460 seemed really fussy on temps for some reason. I'd have it tuned spot on, then 2 days later it's maybe 20* temp difference and either it wouldn't idle or the idle was WAY high. Weird thing is my brother also has a 460 and he mentioned the same thing too.

This year I haven't had to touch it at all. Same settings from this summer and is running no different, even at -20*. I do keep it in the shop when it's real cold and I'm not using it, makes it easy to start.

 

[Adirondackstihl]

Most of my saws seem temperamental to temperature.
I'm at 100ft ASL
I wonder if elevation and barometric pressure plays a role in POP?

 

[Moparmyway]

Most of my saws seem temperamental to temperature.
I'm at 100ft ASL
I wonder if elevation and barometric pressure plays a role in POP?

I am @ 175' ASL ............. mine are also touchy with more than 10-15 degrees of temp swing, but I am soooooooooo anal about listening to my stuff when running, then tweaking to how I like it if need be. I am on the rich side. Also if I go somewhere else (like for a side job), I usually have to re-tune. Again, if I am cutting and don't hear what I want to hear ................. out comes the screwdriver. Its like I am allways looking for a reason to tweak

 

[Homelite410]

I am @ 175' ASL ............. mine are also touchy with more than 10-15 degrees of temp swing, but I am soooooooooo anal about listening to my stuff when running, then tweaking to how I like it if need be. I am on the rich side. Also if I go somewhere else (like for a side job), I usually have to re-tune. Again, if I am cutting and don't hear what I want to hear ................. out comes the screwdriver. Its like I am allways looking for a reason to tweak

Said perfectly! That's how I am.... Squeak seems to be the temperamental one....

 

[jackjcc]

I am @ 175' ASL ............. mine are also touchy with more than 10-15 degrees of temp swing, but I am soooooooooo anal about listening to my stuff when running, then tweaking to how I like it if need be. I am on the rich side. Also if I go somewhere else (like for a side job), I usually have to re-tune. Again, if I am cutting and don't hear what I want to hear ................. out comes the screwdriver. Its like I am allways looking for a reason to tweak

I think I'm kinda the same way. My cutting partner complains I tweak too much, but he only operates saws, I maintain them.

 

[pioneerguy600]

Temperature and humidity changes, sometimes 2 -3 times a day require me to retune my ported work saws. I am basically at sea level right on the coast.

 

[Redoakranch]

I use 100LL and cut at about 1000' elevation all the time in temps from 50-100 degrees. My 346xp and Still 090 always run perfect and the MS660R likes a little adjustment every few months.

 

[ttyR2]

Only my 026 needs adjusting based on elevation changes. The 036 and 046 don't seem anywhere near as sensitive. I chalk it up to the smaller engine and carb just not having as much leeway. I run 50:1 Stihl synthetic and super unleaded (non-ethanol).

 

[singletrack100]

Temperature and humidity changes, sometimes 2 -3 times a day require me to retune my ported work saws. I am basically at sea level right on the coast.

Yah, I'm curious to see how my 066M reacts when I get it back from Chad!

Duane

 

[pioneerguy600]

Modified /ported saws are much more sensitive to tuning, I carry a tuning screwdriver with me at all times. The saws will run without re tuning but I can`t stand to run them unless they are at their best. All my Stihl, 026, 034, 036 PRO, 044, MS440, 046, 066 MS 660 all require re tuning as the day /weather changes.

 

[jughead500]

I run 40:1 Stihl Orange stuff with 90 Octane non ethanol.Never have to retune.I'm at 2200' but elevation varies here from 1600'-3500' hardly ever go that low or that high.usually between 2000' and 2500'.