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Chinese PDTO Chainsaw Choke Lever - Fringe Case # 869d

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3D model description

A customer brought in a Chinese chainsaw that he'd bought online. The choke level had broken and he didn't have any of the pieces. I've never heard of a PDTO, so I have no idea where to get replacement parts for this or if you even can. Fire up FreeCAD and a few iterations later, we're up by another happy customer.

I printed this in PETG to hopefully withstand the temperatures within a chainsaw at a layer height of 0.2mm and 40% triangular infill. You will need supports enabled and I raised it above the bed by 10mm so that the knob was better supported. The original lever more than likely had a plastic pin that hooked into the choke lever, but I knew that 3d printed plastic at that diameter would never hold up. Instead, I cut a small piece of heavy-duty wire I had laying around (maybe a coat hanger?) and bent it into a small 'L' shape. I heated up the longer end with a torch lighter and then pressed it into the hole, with the 'L' pointing towards the knob. Hook that into the choke lever and you're good to goat.

3D printer file information

  • 3D design format: STL and TXT Folder details Close
    • README.txt
    • choke.stl

    Learn more about the formats

  • Last update: 2020-11-20 at 07:54
  • Publication date: 2020-11-10 at 10:19
    Published to Thingiverse on: 2020-11-10 at 04:10





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I am a self-proclaimed know-it-all. I will tackle any project regardless of my experience, or lack thereof. Always ready to learn something new. With over 25+ years experience in electronic repair and 10+ years experience in small engine / ATV / motorcycle repair, there is nothing I can't fix, modify or build.

Why a pepper? In case anyone is curious as to why there is a hot pepper embossed into most of my designs... My nickname is Pepper and that little pepper logo is a hell of a lot shorter than "Copyright © 2017 by Derek J.G. Tombrello" which is how I usually sign my work :)

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