Stihl FS111

Joined
Feb 25, 2015
Messages
2,888
Location
Sask, Canada
Well, seeing as there are some recent posts on Stihl trimmers, I'll throw in a real simpleton review on this one.

I'm well into my second tank of fuel, mostly heavy tall grass cutting. There is some part throttle work but a majority is full throttle.

This thing is light, well that's relative. Lighter than my 4 stroke Troy Bilt and roughly the same weight as my 36 year old Husky 32R.

The simple loop harness works quite well, it balances well and is comfortable. Just because of the hard use, I'll look at a harness.

After setup, the trimmer is well balanced and very easy to swing. The vibration isolation is good, after half a tank you can still feel a bit of hand numbness. Is it comparable to anything? Not sure but it's liveable.

Power is very good. It is overkill for a lot of our use when we are able to stay on top things, I can get it to bog a bit and reach the power limit When burried in the very tall grass. This is stuff over waist high, approaching chest high. Now a bit more power would be great but the thing still chewed through and got the job done. While whoever set it up was very generous giving us a full spool of line, to bad it is garbage. I threw in some .090 husky line and it's a new machine.

After a few more tanks of fuel, I might play with the hi/lo settings to see if there is any improvement. I did have to bump the idle up a hair as it would die randomly returning to idle after a power run. It works good now.

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As a mention, currently running my leftover 50:1 mix. Its the same stuff that runs my sleds, Husky saw and other trimmer. Its Co-op Dynamix, semi synthetic injector oil. Its rated FB. I'll likely try the little Stihl white bottles once I run through it.
 
They take a custom screw driver. I bought a set of 8 or so for a few bucks off Amazon that covers just about all types of ope.

If you do adjust it, don't tune it for max power or it will be too lean. On most 2 cycle engines, you want to set the low speed first and then adjust the high speed so that it "4 strokes" at full throttle without load. 4 stroking is when it's rich enough to surge quickly just a little bit. I've heard it described as "bluddering." Under a load it will lean out and be just right.

Edit: oops!!! That's not a 2 cycle trimmer. Disregard my tuning advice.
 
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That's a really nice trimmer. The 4 mix engines are excellent. Very easy to modulate power, smooth running and gobs of torque. There is a reason people love 'em. The crisp throttle response means they are very easy to manage when cutting around a garden for example. Cranks right up when needed.

I have the larger Echo 26cc PAS weed eater. It's pretty good and has good full throttle power. But nowhere near the torque of the Stihl 4 mix for mid range modulation.
 
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I agree, it has gobs of torque. While I can bog it down, it keeps chewing.

Ill check the carb and see what tool I'll need. I like to err on the rich side of tuning.

Oh and hot restart is half a pull.
 
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