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
http://www.makita.ca/data/upload/tools/BCM2610.pdf
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
Lou
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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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...


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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.

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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!
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Zama carb repair kits found here.
Walbro carb repair kits found here.
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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.

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roundo4

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