Question about Makita DCS640120 Commercial Grade 20Inch 64cc 2Stroke Gas Powered Chain Saw

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I have a Makita DCS640120 Commercial Grade 20Inch 64cc and when i turn it on the chain automatically moves how do i fix it to where it will idle till i press the trigger?

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If clutch springs are not broken turn down idle screw until chain stops spinning

Posted on Apr 25, 2013

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Turn the idle speed screw CCW till the chain stops turning at idle, but the engine continues to run. Make sure the carburetor fasteners are tight. Remove the chain cover, bar, and chain. Spin the outer drum of the clutch to check the bearing which lies between the drum and internal components. If it doesn't spin freely, try oiling the drum bearing area and work it into the bearing. If no help, plan on replacing the clutch mechanism. Hope some of this helps!

Posted on Jul 13, 2010

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Posted on Jan 02, 2017

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Makita DCS6401 wont idle. When the gas is released the chainsaw shuts off.


Try turning the idle speed screw CW (not the jet screw marked L) one full turn to increase speed. Normally, this is set so that the chain stops moving, but the engine continues to run. Hope this helps!

May 13, 2010 | Makita DCS6401 20 20",64cc Chainsaw 2...

1 Answer

Chain fell off


That often creates burrs, this may help with removal, Your OM is excellant for installation, maybe the best I have seen.
http://www.fixya.com/support/r4146814-chainsaw_chain_installation

See pages 19 & 20.
http://www.makita.ca/data/upload/tools/dcs6401%20F-E.pdf

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

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1 Answer

We have dcs6400 and this tool is making a huge noise when we start it and also the tool is looked as it gets overheated very soon even on idle running. please suggest the grade of oil to be used along with...


2-cycle oil mixed at 50:1
1 Gallon of premium fuel to 2.6 ounces of quality 2-cycle oil.
4 Liters of premium fuel to 80 CCs of quality 2-cycle oil.

Your OM can be found here:
Makita Canada Inc:
http://www.makita.ca/data/upload/tools/dcs6401%20F-E.pdf

Good Luck. HTH
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Feb 23, 2010 | Makita DCS6401 20 20",64cc Chainsaw 2...

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