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Briggs Stratton 500e 140cc Mower: Engine Runs Rough - Air Filter, Oil, and Carburetor Maintenance

Showbiz32 15720 10
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  • #1 17213946
    Showbiz32
    Level 6  
    Hello. I have a Briggs Stratton 500e 140cc mower. Since I bought it used a year ago, the engine runs slightly rough. I decided to replace the air filter tomorrow (because it looks like in the photo) and I will give new oil and candles :) can all these things buy oem B&S, do some replacements also do the trick? Is it possible that this operation will eliminate this uneven work? Or maybe it would be appropriate to clean, for example, the carburetor? for China, I do not know how to go about the carburetor, because I have never dealt with it in mowers. does anyone have a video how to do it? Or maybe someone else has some advice?
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  • #2 17214060
    tadkli9743
    Level 24  
    Hello

    First of all, clean the filter mechanically, then wash it (degrease) it thoroughly with some detergent. See if the automatic speed control springs are clean and slightly tight.
    As for oil, SAE 30 oils are used for this type of engines.
    Such oils are produced by ORLEN and LOTOS. One is the Green Garden and the other is Travol. They cost much cheaper and have comparable parameters to oils branded by Briggs.

    best regards

    Added after 1 [minutes]:

    I did not write before installing the filter, gently soak it with oil, it can be engine oil.
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  • #3 17214080
    Showbiz32
    Level 6  
    It would be nice if you showed these springs in the photo :) because I'm green, I'm completely in the mowers
  • #5 17214256
    Showbiz32
    Level 6  
    And the fuel filter is changing? So where is he?
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  • #7 17218171
    Klaudek669
    Level 16  
    @ Showbiz32 You've got the carburetor here from 7:45 am. I recommend watching the whole thing. Best regards.



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  • #8 17218235
    Showbiz32
    Level 6  
    https://youtu.be/K0MlLPmoryY?t=14m12s Where will I get this spring? Maybe she is responsible for the waves for me? I tried to bend it, and shorten it, and it seems to be better, but too fast turns :) Anyone have a link to it?
  • #9 17218418
    wojtek1234321
    Level 36  
    tadkli9743 wrote:
    and there is no fuel filter

    There is, after unscrewing the carburetor from the fuel tank, there is a very fine mesh (arrow) on the suction pipe, which can also get clogged.

    Briggs Stratton 500e 140cc Mower: Engine Runs Rough - Air Filter, Oil, and Carburetor Maintenance

    And when it comes to undulating rotation in this type of engine / carburetor, a worn, stretched carburetor membrane is often responsible.

    Briggs Stratton 500e 140cc Mower: Engine Runs Rough - Air Filter, Oil, and Carburetor Maintenance

    And when disassembling to replace the membrane, you can also clean this filter / mesh because everything will be "on top".
  • #10 17218646
    Klaudek669
    Level 16  
    @ wojtek1234321 in the older ones it was as you write, in the newer ones with the letter e at the end there is neither a membrane nor a filter, the fuel flows down to the carburetor by gravity. The durability and quality of the materials used to manufacture the engine also dropped dramatically. You can see it in the video above during engine dismantling.
  • #11 17218737
    wojtek1234321
    Level 36  
    Klaudek669 wrote:
    wojtek1234321 in the older ones it was as you write, in the newer ones with the letter e at the end there is neither a membrane nor a filter, the fuel flows down to the carburetor by gravity.

    Well, maybe so, but I was influenced by post # 6, I thought it was about this engine, that it was a post from the founder of the topic. It is like not reading the whole topic. Sorry for the confusion.
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Topic summary

The discussion revolves around troubleshooting a Briggs Stratton 500e 140cc mower that runs roughly. Users suggest replacing the air filter, changing the oil with SAE 30, and checking the automatic speed control springs. Cleaning the air filter and ensuring it is properly oiled is recommended. The absence of a fuel filter in this model is noted, and users discuss the importance of inspecting the carburetor, particularly the mesh filter and diaphragm, which can affect engine performance. A video link is shared for carburetor cleaning guidance, and there are inquiries about sourcing replacement parts, particularly springs that may influence engine speed.
Summary generated by the language model.
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