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Ryobi s430 oil leak

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inkslinger
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2018/06/23 20:53:35 (permalink)
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Ryobi s430 oil leak

I bought this as my first trimmer ever , work great for 1year then it started to leak oil? I clean it as best I could order all 3 white check valves , oil pan an new gasket and it still leak a little .  I don't know what else it could be, do I buy a gasket kit and replace all of them ? I end up buying a Echo 266 2 stork and never had a problem with it but would like to get the Ryobi up and running.

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    AVB
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    Re: Ryobi s430 oil leak 2018/06/23 21:51:29 (permalink)
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    Well my experience with these 4 cycle is not good as they are of a very poor oiling design. It is mostly likely piston blow-by caused by worn piston, rings, and cylinder. Personally it is not worth putting in $145 plus other parts for an obsolete engine.
     
    The four stroke trimmers that I have seen that work as intended are the hybrids. There is Matika that seems to work as a true 4 cycle but they use a pressurize oiling system which is different than the Ryobi and Troybilt oil slinger system.
     
    Sorry it is just my experience from working on these on a regular basis.
    MdStamen
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    Re: Ryobi s430 oil leak 2018/06/24 07:44:30 (permalink)
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    I would think the seals for the timing belt. People use these wrong and try to use at angles that starve the engine for oil. Ryobi never fully explained the operation for these units. I have 2 of them that were used properly and I have no problems.
    AVB
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    Re: Ryobi s430 oil leak 2018/06/24 08:04:22 (permalink)
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    Yes these were only design for level operation but operators including myself can and will use a handheld at odd angles in order to get  some of trimming work done. Personally I have very steep embankments that must be trimmed out or the state and county will try to do it gouging deep cuts into it causing high erosion.
     
    As for operation I have seen even the handheld 4C bowers to lose an engine due to oiling problems. These I know are used on near level operation as you just blowing things around and no need to operate on it side or upside down.
     
    As for the seals since the OEM don't provide them it will hard to get them and replacing them even they were available it will be a pain as you got to disassemble the half crank to gain access to the inner seal as the ones that I have taken a part have two seals. This requires a hydraulic press to do.
    post edited by AVB - 2018/06/24 08:07:03
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