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#Post#: 38551--------------------------------------------------
Stihl 311
By: Chainsawrepair Date: April 14, 2014, 11:39 am
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Guy contacted me today about bringing in a stihl MS311 to tune
up and do about 20 chains. Plus go through his dead stihl 310
that the 311 replaced.
Never seen a 311 but knew they replaced the 310. Anyone been
in 311 yet to know about them?
Do they take to muffler modding etc the way the 290 310 390
does?
I had ask the guy about muffler modding the 310 and carb retune
etc for 20% quicker cuts etc and he stated I just cut firewood
and do care about no 20% faster cuts through the wood. Just get
it running right etc. This is 99.9% of the firewood cutters
opinions local I run into. Mine too now days.
#Post#: 38584--------------------------------------------------
Re: Stihl 311
By: 3000 FPS Date: April 14, 2014, 8:40 pm
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I can appreciate that but just a plain ole muffler mod, that is
nothing and it can make some big differences in some saws. If
they ran one before and after they would not be so hesitant.
#Post#: 38599--------------------------------------------------
Re: Stihl 311
By: JohnG28 Date: April 15, 2014, 11:36 am
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Yeah a muffler mod is better for a saw engine in general really,
especially choked up newer models. My 361 runs waaay cooler with
the mm and retune. Even if someone isn't interested in the
performance increase they should consider it for the longevity
of the engine IMO. Sorry, can't help on the 311 though.
#Post#: 38600--------------------------------------------------
Re: Stihl 311
By: Chainsawrepair Date: April 15, 2014, 12:00 pm
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Yep 361 and 290-390 is some of those saws that need a muffler
mod IMO even to wake up and run right stock.
Still looking for 311 info?
#Post#: 38639--------------------------------------------------
Re: Stihl 311
By: jmester Date: April 15, 2014, 7:02 pm
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What are you looking for? From the parts list dont look far off
from a 261 and 362. Check your email
#Post#: 38646--------------------------------------------------
Re: Stihl 311
By: Chainsawrepair Date: April 15, 2014, 7:17 pm
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[quote author=jmester link=topic=3414.msg38639#msg38639
date=1397606562]
What are you looking for? From the parts list dont look far off
from a 261 and 362. Check your email
[/quote]
Hey Thanks for the stihl 311 391 service manual.
I havent seen one before so didnt know what to expect .
Was wondering if folks working on them thought they responded to
muffler mods etc like the 310 did. How they were built etc,
like harder to work on.
#Post#: 38658--------------------------------------------------
Re: Stihl 311
By: jmester Date: April 15, 2014, 8:05 pm
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have not been in to a 311. but based of the parts list they look
like a 362 should not be a problem for you. just new and take a
little longer till you get use to them. had to replace a piston
in a 362 and had a hard time with the twin intake manifold other
than that not to bad.
#Post#: 39075--------------------------------------------------
Re: Stihl 311
By: tinkerswithengines Date: April 23, 2014, 5:05 pm
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I have been into a 311. Not a whole lot of different than the
310. The newer model Stihl saws ending in a "1" seem to mostly
have new carburetors and air filters.
However....Before I retired, a guy brought in a MS441. He
dropped a tree on it! I had to change the engine carburetor
cover, handle etc. The carburetor on this new saw is a
mechanical nightmare! If you ever get one of these on your bench
for carburetor service, obtain a service manual and I would also
recommend you take a couple pictures of it before you rip into
it!
Dave
#Post#: 39290--------------------------------------------------
Re: Stihl 311
By: AKDoug Date: April 26, 2014, 11:38 pm
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The 311 is entire different saw than a 310. It is a stratified
engine with the accompanying carb. It uses Stihl's force fed air
using the flywheel to separate out the big chunks like Huskies
do. It has a sealed one piece top and can use the round HD2
filter if you want.
#Post#: 39473--------------------------------------------------
Re: Stihl 311
By: bloodontheice Date: April 30, 2014, 1:15 pm
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The MS391 and 311 are the same except the 311 is 59cc and 391 is
64cc
and the 391 has an adjustable oiler.
They're modular engined saws with plastic tank housings similar
to the lay of the old 1127
but share none the parts with the previous saws.
We sell a ton of the 311/391 and their pro brother the 362.
Never modded the muffler on any of them yet
and only run a couple ported 362's.
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