lawn mower (42039 C-MODEL)




I built this lawmower during the summer'15 and I was using only the parts from a set 42039. A few days ago I prepared a PDF photo sequence instruction. My lawnmower has:
* attachable grassbox
* two-speed gearbox connected to the front wheels;
* ability of stopping of blades' rotation in case of an obstacle;
* adjustable handle in two places.
The video shows all that functions. Movie was prepared when I was unaware about rebrickable website, so more than half of it shows chosen building steps. Download the instruction, watch the movie and comment. Thanks.
Login to hide ads!


Name lawn mower (42039 C-MODEL)
Designer --pg--
Designed 2015
Inventory 1020 parts
Theme Technic > Model > Farm
Alternate Build of 42039-1 24 Hours Race Car


  • 5 days, 1 hour ago kameiv Level 9
    Awesome model. These are the main reasons why I like it:

    • Good building instructions (no brute force needed), but some photos are a little bit too dark.
    • It took me about 4 hours to build it.
    • Very original idea.
    • Nice look.
    • It is free.

    Looking forward to seeing your new MOCs.
  • 2 weeks, 1 day ago lego597 Level 12
    Оригинально большое спасибо!!!!!!
    • 5 days, 13 hours ago --pg-- Level 14 Designed this MOC
      Thank you! / Dziękuję! /  Спасибо!
  • 8 months ago RH8852 Level 7
    Thank you so much for sharing this.
    This build is ingenious and unique. I loved it from seeing the initial idea of building a lawn mower, to seeing how well-made it was to actually building it. Great stuff :)
  • 1 year, 2 months ago lewachs Level 3
    Very good Job. Thanks a Lot. (Y)
  • 1 year, 4 months ago marcolli Level 3
    Hi, I love the look of this and want to give it a try. Could you tell me the dimensions of the completed model?
    • 1 year, 4 months ago --pg-- Level 14 Designed this MOC
      I've just counted from photos, cause I don't keep it built.
      Width: about 28-29 studs (this dimension is irrational indeed),
      Length: 37 studs without the basket and the handle, 63 studs with the basket.
      Height: no idea - it depends of the handle position.
  • 1 year, 5 months ago Lego360 Level 12 PRO
    This is a very nice alternative. Something different than a car. The operation of the blades is also done very nicely. Love this c-model.
  • 1 year, 9 months ago aegir Level 13 MOC Designer
    Brilliant idea! Really an original model. Thanks for sharing!
  • 2 years, 6 months ago jb70 Level 16 MOC Designer PRO
    This is really a cool idea to transform a 24h racing car to a pretty looking and fully functional lawn mower. 
    I had a lot of fun to build it. 

    Thanks a lot for sharing your design!

    For everyone who likes to rebuild your lawn mover, I have created 3D-file (MPD) and digital step-by-step building instructions (PDF):
    • 2 years, 4 months ago syphoon Level 14
      Thank you!!!
    • 2 years, 4 months ago --pg-- Level 14 Designed this MOC
      The digital instruction is approved. Thank you for your great work.
  • 2 years, 9 months ago moliveira Level 2
    thanks you for this! I had some fun to build it!
  • 2 years, 9 months ago antares Level 21
    Perfect builing for a realy needed machine :-)

    Congratulation, this is like a real one, wow!
  • 2 years, 9 months ago Poppy2612 Level 7
    Just finished the mower - grass box next. Its a fun build and when will I ever get a chance to build a technic lawnmower again! Thanks for publishing the instructions :)
  • 2 years, 10 months ago Renji Level 13
    Absolutely great and original MOC. I just love it. Your modell was the reason that I bought the set. Wanted to build your lawn mower.
    Thanks a lot :D
  • 3 years ago mocbuild101 Level 15 MOC Designer
    I never would have thought of making that out of a car!!! I actually built this and then motorized it.
    • 3 years ago --pg-- Level 14 Designed this MOC
      I'd like to see how it looks after motorizing it, put a photo at your bricksafe.
  • 3 years ago pauluZ Level 9
    Very good MOC !!! - Assembled very fast and easy :)
  • 3 years, 1 month ago BungalowMatt Level 9
    Amazing! The original car is one of my favourites, but this is brilliant and worth taking the model apart for. It might stay on display for a while!! Kudos for such an original idea and its sophisticated execution.
    • 3 years, 1 month ago --pg-- Level 14 Designed this MOC
      Thank you for your kind opinion. Indeed, the model is not sophisticated - it has only a few gears and very simple mechanisms. The building process doesn't take too much time, so try if you want rebuild 42039 to something different.
  • 3 years, 1 month ago Pascoile Level 3
    Awesome build! But I can't download the instructon.pdf file, some pictures are missing and when I try to save nothing happens? Is there an other way to get the file? I really want to build it, thanks!
    • 3 years, 1 month ago Pascoile Level 3
      Tryed it again today and it worked fine!
      • 3 years, 1 month ago --pg-- Level 14 Designed this MOC
        I think it was something wrong with these pages (rebrickable, bricksafe) for a while. I've tried to read your comment shortly after posting it and I cannot open this page properly. Thank you for building my MOC. Have a fun!
  • 3 years, 5 months ago marinden Level 9
    Really original MOC! I just finished building it. Great job designing this. I had a great build.
    • 3 years, 5 months ago --pg-- Level 14 Designed this MOC
      Thanks. I'm glad that you enjoyed it!
  • 3 years, 6 months ago cpg1200 Level 5
    Brilliant MOC. I just built the worlds fastest lawn mower! (Based on a le Mans racer :-)
  • 3 years, 9 months ago gericopachy Level 8
    très belle réalisation . je l'ai monté à l'aide des photos . génial
    • 3 years, 9 months ago --pg-- Level 14 Designed this MOC
      merci beaucoup pour ton opinion, je la comprends sans google traducteur!
  • 3 years, 9 months ago KINGZAC24 Level 10 MOC Designer
    ive been waiting to build this since i saw it on the internet good job
  • 3 years, 9 months ago vinch Level 4
    Very good idea and well designed!
  • 3 years, 9 months ago horse Level 7
    The race car looks good that's what it was designed for, but your Lawn Mower takes the cake for originality of thought and design.
  • 3 years, 9 months ago Techniczny Level 4
    Nice work. Super pomysł na kosiarkę z tego zestawu.
  • 3 years, 9 months ago Ychsel Level 10
    that's something different for a change
  • 3 years, 9 months ago vb Level 3
    This is such a great idea. Can't wait to put it together. And now it's got me thinking about my own MOCs...
Load More Comments
to your account to add or reply to comments.
Already have some of the parts? Use the Build this MOC page to only show the parts you are missing.
Create an account to change the default filters used.

Waiting for Inventory to load