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Makita dpc7311 leaks at crank - Makita Saws

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The DPC7311 is a two-stroke demolition saw, there should be no standing fluids, oil or otherwise in the crank case to leak out. The reason it uses a 50-to-1 gas-to-oil mix is so the oil in the gas can settle on the moving parts and lubricate them.
If you do have anything leaking anywhere out of your crankcase you most likely have problems with your carburator in that too much fuel is getting into and filling up the crankcase.
You should also look to make sure your leak isn't coming from a crack in the fuel tank or from the carburator or fuel line and running down to look like it's coming from the crankcase.

Posted on Feb 07, 2012

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Makita dpc7311 wont start after heating up. first start pretty easy after warming up will not idle.


The deposits on the spark plug are not a real big concern. The issue may be related to hoses that are cracked due to age or the jets on the carb may need to be reset. There is a high and low screw to do this. Also make sure that the woodruff key that holds the flywheel to the crank is not loose.

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My makita dpc7311 has no spark, replaced plug, coil, flywheel, what else can it be


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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?

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1 Answer

Were do you pot the oil in **** cuter


Hello. I would be happy to answer your question. The DPC7311 uses a glorifieds chainsaw engin and takes mixed fuel - I believe the manual says to mix the fuel:gas at 100:1, but that is with a specified Makita high performance oil. Most people mix it 50:1 and use normal two-stroke oil (actually it covers that in the manual also, I just found the info on page 12). The oil itself comes with the measuring cup (or marks on the side of a transparrent window), and has specific measurements listed on the container.

For your reference, I've included the links to the manual and the parts breakdown, both on this page. Hope this answer is what you need. Thanks.

http://www.makita.com/en-us/Modules/Tools/ToolSupport.aspx?ID=476

Mar 31, 2011 | Makita DPC7311 73cc 14Inch Gas Powered...

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Ive got a Makita concrete saw DPC 7311,it says a mix of 100:1 but thats alot ?


The manual says to mix it 100:1 if using Makita high performance oil or 50:1 using regular Makita 2 stroke oil. I'd go 50:1 with non Makita oil too.

Here is a site to download a pdf manual if you need it.

http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man

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1 Answer

Have a makita quick cut saw but site requirements need a manual. can you email me a copy?? Machine is Makita DCP 7311 concrete cutting saw


go to Makitatools.com and type in your model number which is DPC7311 and you can download the owners manual for this tool. If I have helped with your request would you please rate this response accordingly. Thank you

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1 Answer

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check compression with a gauge bet its under 100. if so check piston and rings, Most of the time you can just hone cylinder and replace rings.

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