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#Post#: 86548--------------------------------------------------
Stihl 025 Carb Adjustment?
DIR By: sw01
Date: April 22, 2020, 12:48 pm
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I replaced the ignition coil and cleaned carburetor on my Stihl
025 chainsaw. It wouldnt idle and died when you stop reving. I
think it was just the adjustment screws (L). When reassembled,
it seems to be at "full rev" or very high rpm. I started
playing with the adjustment screws but cant get it to idle.
What is the trick on the adj screw? Manual says crank the L
screw down to seat, then back off one turn. Did that but the
rpm is so high when I start it, it sounds crazy. Tonight I will
try going all the way counter clockwise then one turn clockwise.
Ran out of time last night.
Any help would be appreciated to get me on the right track.
Knowing that I took it all apart, does the symptom sound like
something else? The choke and throttle adjustment are intact
and working. Need to cut tonight, but I fear I will spend most
of my night trying to get the thing running/idling properly.
Thanks in advance.
#Post#: 86549--------------------------------------------------
Re: Stihl 025 Carb Adjustment?
DIR By: Chainsawrepair
Date: April 22, 2020, 2:47 pm
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Did you mess with your I - Idle screw? Try backing it off.
Then see. Then try going with the L screw from lightly seated to
1.5 turns out and see.
Just curoius do you have the carb with the H side too?
New carbs with fully adjustable H and L sides are only $30-$35
from stihl.
#Post#: 86550--------------------------------------------------
Re: Stihl 025 Carb Adjustment?
DIR By: sw01
Date: April 22, 2020, 2:53 pm
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Mine is only the L screw. I did mess with it trying to get it
to idle properly. But once carb removed it seems like it's wide
open...I cant imagine that the little turn of the screw I did
made it run full rpm but maybe they are sensitive. Newbie
question...but which way is lightly seated? Full clockwise, or
full counterclockwise?
I havent bought a new carb yet - main concern is that I have it
put back together correctly to run....Didnt want to spend 1/3 of
new $ on repairs so tried it myself....almost successful. I'm
not much of a mechanic but youtube got me through a teardown and
repair.
--- Quote from: Cut4fun . link ---
>
> Did you mess with your I - Idle screw? Try backing it off.
>
> Then see. Then try going with the L screw from lightly seated
to 1.5 turns out and see.
>
> Just curoius do you have the carb with the H side too?
>
> New carbs with fully adjustable H and L sides are only $30-$35
from stihl.
>
--- End Quote ---
#Post#: 86551--------------------------------------------------
Re: Stihl 025 Carb Adjustment?
DIR By: Chainsawrepair
Date: April 23, 2020, 6:30 am
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Clockwise till lightly seated. Then turn counter clockwise out
to 1.5 see what you get.
If not carb and put together wrong if you took a[art to rekit
etc. Could be a air leak.
Have you checked your impulse line for cracks etc. From back of
carb area to back of crankcase cylinder area.
HTML https://www.sawagain.com/stihl-021-023-025-ms-210-250-impulse-line-11231418600/?gclid=EAIaIQobChMI_KrHo7n-6AIVB9bACh0k1gJoEAQYASABEgJnKfD_BwE
Someone else posted this so no need to re-describe = (((((((
The impulse line is hard to get to and hard to see. But you can
get to it from the left side (bar pointing forward), under the
recoil cover, just above the coil and behind the flywheel. The
impulse line goes from a metal nipple at the back of the engine
to a plastic nipple in the orange handle that leads to a hole in
the carb just to the side of the intake port.
So, take off the recoil cover, find the line, and use needle
nose pliers to dig around in there to pull that thing out and
shove another one in there. It can be done. Take your time. or
take the entire orange handle off (another PITA on these saws,
requires removing carb and other stuff) and pull the intake boot
off and there it will be, exposed I have done it both ways, and
recommend the first. ))))))
Video online might help you
HTML https://youtu.be/GY5MRPBscnI
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