Question about Makita DCS51018 18" 45cc Chain Saw 2 Cycle

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To keep my Makita weed wacker running I have to close the choke about 3/4. I see no mixture adjustment on the carb and everything appears clean.

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An IPL for a 26cc line trimmer can be found here:
BCM2610 Line Trimmer
The carburetor is pictured but not where it mounted on the engine or how you gain access.

It sounds like it is very lean. Have you cleaned the air filter? Checked for leaky fuel hoses? A loose carb or damaged boot may also be the cause. There is a reason it is running lean. HTH
Continued operation in a lean condition may cause it to cease.

Posted on Oct 02, 2009

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Mixture adjustment is there they just close it off so u cant adjust it :(
u need to break off the cap or drill it out to get to the
mixture adjustment screw.just don't drill to deep.
i am sure u checked the air filter is clean !!!

Posted on Oct 02, 2009


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Why won't my FeatherLite FL-20C weed eater will not stay running when I put it in full choke. What could be wrong?

It should run ok after warming up. After starting it, let it run for a minute or so and then try gradually opening the choke. You might try increasing the throttle setting at the same time. After the motor is hot, if you have to have the throttle setting increased in order to keep it running it means the idle setting needs to be increased, usually by turning a screw to keep the fuel valve from closing so much, or that there is a problem with the fuel a clogged jet or fuel passage in the carb.

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My hmc green machine 3000ss weed wacker carb needs adjusting it only runs with choke closed

Try cleaning or changing the air filter. If it dirty the engine will not stay running with out the choke on.

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My Weed Eater FL1500LE gas leaf blower will not run beyond the full choke setting. If I move the lever to half choke the engine will stop. Or if I move the throttle from full throttle to a lower speed...

This is a tell tale sign of a lean fuel mixture. By choking the unit you are manually creating a richer fuel mixture. I would purchase a compression tester from a local parts store and check compression. If that's ok, I'm willing to bet the problem is still carb related. Two stroke carbs are tricky to clean because of high/low ports that are one way and sometimes impossible to clean. Did you remove high and low needles when cleaning carb? Another trick is to mix seafoam with your gas, then mix two cycle oil to proper ratio. Use 2 ounces seafoam to one gallon of gas, then mix two cycle oil to proper mix. Hope this helps! Good luck and happy wrenching!

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Craftsman weed wacker will start and run

Are you sure you have the right fuel mixture? Many of these require 2 Cycle oil to be added to the gas. If fuel is right, you may have a vacuum leak at the carb (or crack in base where it mounts to the engine). My weedwacker needed to be run on half choke for about 10 min before it got hot enough to run with choke off.

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Weed Eater Problems

If it runs with the choke closed then it's not getting enough gas. Check the gas filter on the end of the gas line in the gas tank. Remove the gas cap and using a piece of wire with a hook on the end, reach in the tank and pull the gas line out through the opening. Check the filter on the end of it. You could also have a burst-ed diaphragm in the carburetor. This sucks the gas from the tank to the carb. If that's the case a new weed eater may be in order unless you can find someone with the parts to repair it. Also check the gas lines for leaks or breaks, 2 of them.

May 17, 2010 | Troy Garden

1 Answer

Craftsman 4 cycle weed wacker, only runs while choked. If I ''un choke'', will only idle, press the trigger and it stops. I checked the spark plug, put in fresh gas, cleaned ''spark screen'' in muffler. No...

Be sure fuel lines are healthy...especially any places where they bend. If you feel confident enough you can go into the carb itself and check the inlet screen which is just under the inlet needle. These are a common trouble spot.
The screen will appear to be fine at first glance, but remove it and hold it up to the light and you'll find it to be swollen completely shut!
Might as well install a kit while you're in there. It's only about 10 bucks and the amount of time and effort it costs you is the same.
NOTE: Get a "REPAIR KIT" for your carb...NOT just a diaphragm kit.
Zama carb repair kits found here.
Walbro carb repair kits found here.
Hope this helps!

Sep 29, 2009 | Garden

2 Answers

My leaf blower starts up fine but when I advance choke to its 3rd setting which is all the way open and try to raise throtle it dies out and have to close choke to keep running.

Sounds like a carb issue. Try spraying carb and choke cleaner while it is running. If that does not help may be remove carb and clean and rebuild it. My weed eater does same thing and I get it running and then spray it down. It takes a couple of sprayings but it helps.

Good luck

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My homelite weed wacker will only run in the choke position

Check the fuel lines for breaks/cracks. If they are o.k. then you will need to clean the carburetor. Disassemble the carb. and spray with carb. cleaner. Make sure the small screen in carb. is free of debris. Use a Den Tek Brush,(, to clean the small portals in carb. Reassemble and start.
NOTE: If your carburetor internal parts are more than 4 yrs. old, you may want to replace them. So buy a carb. kit.


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2 Answers

Redmax weed wacker wont stay running

Have these unit been stored with fuel in them or sitting around for a long period of time? If so the carbs may need to be overhauled. Also check for a clogged fuel filter and vacuum test the fuel lines for cracks.

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