LEGO 42121 Heavy-Duty Excavator Building Instructions
2021 · LEGO® Technic · 248 pages in 2 booklets
All 248 pages of the original booklets, scanned and free to browse or print. Released 2021 in LEGO® Technic.
Preparing pages for printing
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Booklet 2
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About the 42121 Heavy-Duty Excavator instructions
On this page you can find the original construction manual for the LEGO 42121 set. With the assembly manual you can easily learn how to build the 42121 Heavy-Duty Excavator step by step. The set was released in 2021.
The assembly guide is prepared in a very understandable way for children and adult LEGO enthusiasts. A total of 248 instruction pages are shown, explaining the step-by-step construction stages across 2 booklets.
