Question about Makita DCS6401 20 20",64cc Chainsaw 2 Cycle

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Stihl chainsaw settings for mixture screws

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I have a stihl ms 180 that leaks bar oil all the time

Posted on Aug 11, 2009

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Hi

STIHL MS 170,MS 180 H;L;T(together)2 turns
STIHL MS 210,MS 230,MS 250,MS 260,MS 290,MS 310,MS 340,
MS 360,MS 361,MS 390,MS 440,MS 460,MS 660 H=1turn,L=1 turn,T adjust
STIHL MS 270,MS 280,H=3/4 turn,L=1 turn,T adjust

cheers savumihai71

Posted on Dec 04, 2008

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Solution 1 will get you close if the saw dosn't work but Solution 2 is the final fix for all saws. Once the saw is running I fine tune it under a load. I usually set a few pieces of wood 12"dia aside for testing. I start a slice close to the end about an inch deep or just deep enough to keep to saw from jumping too badly. While cutting as much as possible without stalling and the throttle wide open I tune high mix (H). There might be some risk since I am not using both hands to hold the saw but I anticipate the worst and keep my face and body away from the plane of the saw blade. Low mix is just a balencing act between the lowest you can set mix and throttle stop and still keep the saw running without the chain moving or aid from the trigger. I've been able to turn some small saws (and others) into monsters and that's what we're after!

Posted on Mar 30, 2009

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I have a Stihl ms361 chainsaw that won't give no spark. How can I fix the problem

Posted on Aug 10, 2011

  • joe b Feb 01, 2013

    check the plug and the wires going to the switch and the coil. if still no spark u need a new coil.

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My 260 stihl pro is giving me trouble with a lot of oil leak. It doesn't have strength, when I try to cut with it, it just goes off.

Posted on Sep 18, 2011

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There is no set setting..you just have to adjust according to ur chainsaw..every chainsaw is different.

Posted on Sep 03, 2008

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SOURCE: STIHL CHAINSAW MIXTURE SETTINGS

one turn high and low 66 has compesator carby willrun rich up high but will lean under load

Posted on Sep 03, 2008

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How do you set the mixture screws


I'd start at 1.5 turns CCW from lightly seated. Then tune for performance. It is probably fitted with tamper resistant fittings mandated by the EPA. I contact my local Stihl dealer when my saw needs adjustment. HTH
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Tunning specification for a stihl 028 chainsaw?


I'm not sure there are any "endorsed" tuning specs from Stihl as weather, temperature, fuel quality etc all contribute to engine performance.
Pictures of all types are all over the web.

As for the carb tuning procedure, maybe I can help?

Start with fresh fuel, all filters clean, and bar and chain installed. Also, fill the chain oil tank with bar/chain oil and VERIFY that the chain oiler works properly.
Initial fuel mixture settings (the H and L screws) should be 1.5 - 2 complete revolutions counter clockwise from lightly seated. Sight the carb's throttle plate and adjust idle screw counter clockwise until the plate stops moving.(Throttle closed completely.) Then go back clockwise 3 complete revolutions. This will produce an acceptable startup condition on a HEALTHY saw.
Clamp the bar in a STURDY bench vise and roll the chain with the shank of a screwdriver to verify it is clear. BE SAFE!
Choke the saw and pull the starter rope until the engine "burps".
NOTE: If no burp after 6 pulls, stop! Something is wrong.
After the burp, set choke to half and pull starter until it runs. The settings I gave should produce a slightly rich condition and a slightly high idle. (Chain will be in motion!)

Blip the throttle trigger and idle it down just enough to keep it running during the tune procedure.
Step 1) Using the "L" screw (closest to the engine), turn it clockwise until the engine smooths out or possibly increases RPM. Back it out slightly until the engine has a slight "LOPE" sound to it. (Like a drag car on nitro).
Step 2) Accelerate the engine to full throttle and go to the "H" screw (closest to the air filter) and slowly turn it clockwise and note the RPM increase. There will come a point when the saw will "Top-Out" and loose power. Not even enough power to turn an maintain empty chain's RPM! Go back counter clockwise to the edge of that point, and counter clockwise another fourth (1/4) revolution.
Step 3) Idle the saw back down. Again go to the "L" screw and repeat Step 1.
Step 4) Repeat Step 2.
Step 5) Idle the saw down until the chain stops moving completely. NOTE: Don't settle for a "crawling chain" condition. If the steps above are performed well and all else is healthy, you should be able to idle the engine down to a ridiculously low RPM and it will not shut off.

Hope this helps,
Dolf-

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1 Answer

STIHL CHAINSAW MIXTURE SETTINGS


one turn high and low 66 has compesator carby willrun rich up high but will lean under load

Aug 31, 2008 | Chainsaws

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