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

1 Answer

Stihl MS 260 Pro wont run wide open or idle.

Saw is like new. Only 2 tanks off gas threw it. Had carb. cleaned, still the same. Know dealer says I need a new carb. abd they cant find my warrenty. $100 for a new one, on a already over priced saw. The old Stihl were great saws. My dad has a 28, no trouble in 18+ years. Think the new ones are ****!

Posted by on

  • brandon_70ch Feb 12, 2009

    Thank for the reply. I will try it and post back!

  • brandon_70ch Mar 01, 2009

    SAW FIXED! Took to a diff. guy. There is a line that supplies the vacum for the carb. to work it was off. Not sure why dealer missed it the first time. GUY I TOOK IT TO THE SECOND TIME FOUND IT IN SECONDS. Cant remember the name of the line. Thanks.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 211 Answers

Hi brandon First change the sparkplug with the same heat range,Check and clean the gas filter with compressed air.Remove the carb and very carefully disassembly entirely.Check the gaskets and the diafragms.At the fuel pump side there is a fine screen(clean it).Check the needle,the spring and lever.Unlock the screws L and H(note how many turns are they).Put the corp of the carb in a special clean solution for 12 hours and then clean it with compressed air(something is clogged there).Put all back together and try to start the engine. regards savumihai71

Posted on Feb 12, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

My stihl chain saw runs full out without pulling the trigger? what can i do?

carby idle adjustment or a carby kit and clean needed

carby has a high and a low rpm jets

STIHL MS 290, 310, 390
Instruction Manual - improper use can cause serious or fatal injury. MS 290. Warning! ..... model. Safe use of a chainsaw involves. 1. the operator. 2. the saw.

Oct 13, 2016 | Stihl 16" Chain Saw Repl. Chain Model...

1 Answer

Stihl 180c runs wide open all the has a new carb on it, linkage is fine

Stihl MS 180C Wont Run ' > Forums > Equipment Forums > Chainsaw

Aug 14, 2011 - 10 posts - ‎7 authors
I have a Stihl MS 180C that i cannot get to run. I used it all last year and went to use it a few months ago and it didnt seem ... it is not under warranty and i have pulled and pulled with choke on and throttle wide open and still wont start. ... Depending on the carb, some times you can just go for broke and get a ... Stihl ms 180 running rich
13 posts
Jun 5, 2015
Echo cs-370, they actually work
15 posts
Oct 12, 2010
More results from

Stihl Chainsaw Troubleshooting Guide · TEK Indoor · Disqus

Dec 15, 2015 | Stihl Garden

2 Answers

My 025 stihl chain saw runs erratic from wide open to stop, no idle

I have found that replacing the carb. with a new one . Usually between 27.00 to 38.00 dollars usually saves a lot of time over installing a kit. problem is usually due to a jet problem or the ethanol in the gas has removed the coating on a plug inside the carb. which requires carb. replacement

Sep 20, 2014 | Stihl Chainsaw Parts 021 023 025 Ms210 230...

1 Answer

Stihl chainsaw problems

Your dealer is right. Gas is not a carbs best friend. every time you fuel dirt gets in the fuel tank from the air. This eventually blocks air and fuel passages and check valves inside the carb. That is the reason. Carbs wear out like anything else. Check the price of a carb compared to a kit. Some Stihl carbs are reasonable.

Jul 21, 2014 | Stihl Garden

1 Answer

I bought a stihl ms 660 chainsaw used with a 32 inch bar and chain. i ran it before i bought it and was good. then i started using it maybe 5-10 minutes and it died. i tried starting it again and took...

They will score one side of the piston because of the heat.Its always on the exuast side.It could be the carb is adjusted to lean that makes it run hot.The muffler might need a good cleaning too?If it gets plugged up it will run hot too?It sounds like you gas and oil are mixed right.Thats about the only thing that will do it besides straight gas run in it.Could be the shop tec doesen't know how to adjust the carb?I would ask the to make sure its adjusted right.And not to lean.If its any kind of shop someone there should know how to do it right.When you get it back try running it wide open it should do whats called 4 stroke when not cutting wood then smoothe out while cutting.If you hold it about wide open and it runs fine.Its not right.If it does you need to open the high side of the carb a little.Maby a 1/4 turn at most.Just untill its getting to much gas to run smoothe.I hope they fix it right this time.Thats a very nice saw!

Mar 11, 2011 | Garden

1 Answer

The saw seems to be getting too much gas. with the filters off i can blow air in the carb and it does fine. i cleaned the needle valve and it does the same.

The carburetor could be set too rich for the unit to run properly. If you take it to a Stihl dealer they can tune the saw to the correct rpm. You can try to tune it to a "leaner" position. Look at the carburetor while it is on the unit and at Wide Open Throttle turn the H screw clockwise maybe half a turn and see if it will run at a higher rpm.
Alternatively you could re set the high side (Wide Open Throttle) by turning the screw until it seats (please turn the screw lightly as you could damage the seat) and turn it one full turn out. This is the factory setting and the unit should run O.K. at that position. If it still does not run correctly then there could be other issues with the carburetor that is making it not run very well.

Aug 18, 2010 | Stihl Ts400 Cut Off Saw Carb Carburetor...

1 Answer

Have stihl ms 210 chainsaw cranks will idle boggs out when you give it gas adjust highspeed then want idle been threw carb twice its clean [ help]

if it is ideling ok I would check the air filter first , try running it without filter in clean air enviroment, Then check the spark plug, clean or replace if necessary, then attempt adjusting carb...

Dec 11, 2009 | RTO Spur Sprocket For Stihl 017, 021...

1 Answer

Stihl 021 running poorly

Couple of things I would check first. Place a funnel in a can with a paper napkin covering bottom of funnel. Pour the gas from the saw into the funnel. If there is a lot of trash in there, remove the fuel line from tank. Clean the filter with carb. cleaner. Then clean the tank with carb. cleaner. If you still have problem. Replace the Air inlet tube, (clear tube with screw type device close to carb).

Apr 15, 2009 | RTO Spur Sprocket For Stihl 017, 021...

1 Answer

New Stihl ms 180 idles but will not accelerate

sounds like you may have a broken throttle cable. take the top cover off and inspect to see if this is the problem. let me know if this is it or if you need more assistance with this.

Mar 01, 2009 | Poulan Wild Thing 2375 18" Gas Chain Saw...

6 Answers

Stihl chainsaw

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

Aug 31, 2008 | Makita DCS6401 20 20",64cc Chainsaw 2...

Not finding what you are looking for?
Makita DCS6401 20 20",64cc Chainsaw 2 Cycle Logo

1,323 people viewed this question

Ask a Question

Usually answered in minutes!

Top Makita Garden Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

2453 Answers

Paul Sikkema
Paul Sikkema

Level 2 Expert

171 Answers

Are you a Makita Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides