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I have a Ryobi Lawn Hornet MK2 which belongs to my brother and I offered to try and fix it. Two of three fuel tubes broke and he is uncertain where they go (as am I). There is a primer pump with two tubes attached, two tubes attached to the carby and two go to the fuel tank. One is filtered in the tank, the other not. I suspect the filtered tube from the tank should go to the primer, the outlet tube on the primer to the carby and the second one from the carby go back to the tank. Have no idea which tube on the carby, primer or tank is in/out? Can you help. Machine start with considerable effort but cuts out.

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  • leeminers Mar 12, 2009

    Apologies to all. Don't know where I got the MK2 bit. A sticker on the motor says :-

    Eng Family 4031UB 24RA-EM Date Code -601?

  • beakman50 Mar 13, 2009

    have the same problem with 3 fuel lines on the grass scorpion.dont know what goes where.looking for a pdf manual fir it but no luck

  • leeminers Apr 05, 2009

    Sorry if comment posted Apr 05 2009, re "shooting the messenger" relates to myself. Most certainly now, I have all the info required to at least get the lines connected to the right ports. Many thanks to all those having input.

  • Anonymous Apr 08, 2009

    I can't get the bulb to take gas. Keeps getting air that appears to be coming from the top of the carb.

  • John McKinney May 11, 2010

    If you can get me all of the numbers (model, serial, type, etc.) off of the engine, I can walk you through this or get you a diagram to help you. Hope I can help.



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IVe worked out that the tube from the filtered tube ( the lowest part of the tank) goes to the bottom entryof the carb and the other goes to the primer bulb. the other side of the primer bulb goes to the top entry of the carb.So the barb has two entry points,the top being to prime for start and the bottom for ordinary running.I found this works for me.

Posted on Mar 24, 2009


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