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Anthony Farrell Posted on Jan 11, 2012
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Makita gas saw has too much gas entering the carburetor

When I start my Makita gas cutoff saw it runs fine but after a while there is way too much gas in the intake and it floods and dies .Have cleaned the carb any ideas .

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Andrew White

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  • Makita Master 2,239 Answers
  • Posted on Feb 18, 2012
Andrew White
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Joined: Dec 08, 2010
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The fuel inlet needle in the carb is leaking, replace the needle with a new one, the needle is rubber tipped and will wear espesially on a power cutter due to dust in the fuel tank, when replacing the diaphram make sure the gasket goes to the carb first followed by the diaphram and cover, the gasket is used as a spacer, so if the diaphram goes on first it will be too close to the metering lever and will leak.

2 Related Answers

Anonymous

  • 90 Answers
  • Posted on Aug 31, 2010

SOURCE: my partner k950 cutoff saw isnt getting gas to the

check from the tank. is it clean? use air to blow back to the tank. most times it is trash and varnish in the carb.

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Anonymous

  • 31 Answers
  • Posted on Jan 16, 2011

SOURCE: on the dpc7311 cutoff saw what do i set the 3

one screw should be your idle adjustment one srcew will be the low jet start with a turn and a quarter with saw running at idle turn srew in both directions until it dies down then set the screw in the middle for the high jet start with the same setting but the final adjusment must be made with engine at full throttle adjust until max rpm is abtained and the back it off just a little bit too make sure you are not above max rpm

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Related Questions:

0helpful
1answer

Have makita demo saw with auto decompression but will not decompress when trying to start

If your Makita demo saw has an auto decompression feature but is not decompressing when attempting to start, there could be a few potential causes for this issue. Here are a few things you can check:
  1. Check that the decompression valve is functioning properly. It could be clogged or stuck and not allow the engine to decompress.
  2. Check the air filter. A dirty air filter can restrict airflow to the engine, making it difficult for the saw to start. Clean or replace the air filter as needed.
  3. Check the spark plug. A fouled or worn spark plug can also make it difficult for the saw to start. Clean or replace the spark plug as needed.
  4. Check the fuel filter. A clogged fuel filter can restrict fuel flow to the engine, making it difficult for the saw to start. Clean or replace the fuel filter as needed.
  5. Check the carburetor. A dirty or clogged carburetor can restrict airflow and fuel flow to the engine, making it difficult for the saw to start. Clean or rebuild the carburetor as needed.
  6. Check the fuel level. If the saw runs out of fuel, it will not start. Make sure the fuel tank is filled with fresh fuel.
It's worth mentioning that if the saw is still under warranty, it is best to contact Makita's customer service and ask for assistance.
If you are not comfortable working with the engine, it is best to consult a professional or refer to the service manual for your specific saw.
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Makita 7311 won't startt need help please?

The gap in between the flywheel and the magneto is critical.
0helpful
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Saw runs for awhile then shuts off and continues to run.

i always have to start the saw and then pull the trigger like every 5 seconds for about a minute then it works for me
1helpful
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Was using saw ran fine stopped and returned next day will not start fuel fine new plug filterers gas and air still wont start took to local chain saw repair shop they said that because it had water in gas...

check the carburetor. If you have a stiff diaphragm then it won't run.
I have seen them that behave just like that. They will run fine, turn it off for a few minutes then they won't restart. WD40 isn't going to get it to run either, try a small amount of mixed gas right into the carb. It should run for a minute until the gas you put in runs out then die. If it doesn't run then you have a bigger problem

If you need further help, I’m available over the phone at https://www.6ya.com/expert/kelly_69a0cf1b13789df1

2helpful
1answer

Have a makita gas cut-off saw dpc7321,has spark to the plug but will not start,it is getting plenty of gas too

Is the gas fresh? Is the plug wet with fuel after you try and start it? Have you done a compression test on the engine?
0helpful
1answer

On the dpc7311 cutoff saw what do i set the 3 ajustment screw on carb at.

one screw should be your idle adjustment one srcew will be the low jet start with a turn and a quarter with saw running at idle turn srew in both directions until it dies down then set the screw in the middle for the high jet start with the same setting but the final adjusment must be made with engine at full throttle adjust until max rpm is abtained and the back it off just a little bit too make sure you are not above max rpm
Jan 12, 2011 • Makita Saws
0helpful
1answer

I was using the saw when it suddenly seemed to run out of gas, the tank was full and I attempted to prime it as there was no gas visible in the primer button. I have refilled the tank and tried priming it...

Remove the carburetor cover and inspect all fuel lines for coming loose on the carburetor and the primer. If nothing is obviously wrong, return the saw to where you bought it to obtain warranty service. Hope this helps!
1helpful
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How do you set up a carb on makita chain saw

You provide no manual, I chose a "DCS34" a link follows: http://www.makita.ca/data/upload/tools/DCS34%20F-E.pdf
It lists no starting point for the "H" and "L" needle valves, I recommend 1.5 CCW from lightly seated. then tune for performance like this:
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter and spark arrestor; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run. If the saw cannot exhale it cannot inhale.

There are 2 wav (sound - idle & full – may not be highlighted) files that I find most helpful, I think you will too.

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
1helpful
1answer
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