20 Most Recent Makita DCS6401 20 20",64cc Chainsaw 2 Cycle Questions & Answers

my owners manual says 50:1 gas:oil ratio hope this helps

get a gallon gas can..put half gallon gas in then add 2.6fl ozs oil..then top can with more gas till full shake it and there is your mix ready to use

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Sounds to me like a plugged up fuel line or old fuel in the fuel line. You may be able to clear it by spraying some starting fluid into the carb to pull the old fuel through. You only want to do this 2 times because this has no oil in it. Another suggestion it to remove the spark plug and put some of your fresh fuel mix directly into the chamber. About an eyedropper full should work.

I've had similar on a Husky which went on to break a piston ring. Turned out to be a combination of 2 things. The exhaust nuts were lose allowing extra heat to get to the cylinder and the fuel mixture was too weak in terms of oil. First check you're using the correct fuel to oil 2 stroke mixture it does not hurt to add a little extra oil, I suggest trying 40:1 rather than 50:1. Then check the tightness of the exhaust bolts. If they take any tightening then you will probably find you need a new exhaust gasket. Replace if necessary but make sure you tighten the exhaust and re-check the tightness regularly! .

ALWAYS wear protective clothing, including: * Leg protection such as chaps, leggings or cut resistant pants. * Hard hat if there's any material overhead. * Gloves or mittens with an enhanced gripping surface. * Eye protection with side shields. * Hearing protection such as earplugs or earmuffs. * Boots or shoes with steel toes and nonskid soles.

there should be a hole in the right side of the top handle that will allow your screwdriver to go in to the carb for the adjustment If you need further help, I’m available over the phone at https://www.6ya.com/expert/kelly_69a0cf1b13789df1

Take it back to whoever did the carb work. There are two jets on those, an idle jet which can be adjusted for idle speed, and the power jet that kicks in when the saw is under work load. You still have a problem with the power jet, either needs adjusting 1/4 turn at a time until the saw stops killing under load, or the jet and assembly is bad.