LEGO 42666 Cat Birthday Party & Tree House Building Instructions
2025 · LEGO® Friends · 321 pieces · 116 pages in 2 booklets
All 116 pages of the original booklets, scanned and free to browse or print. Released 2025 in LEGO® Friends.
Preparing pages for printing
Booklet 1
Booklet 2
About the Cat Birthday Party & Tree House instructions
On this page you can find the original construction manual for the LEGO 42666 set. With the assembly manual you can easily learn how to build the Cat Birthday Party & Tree House step by step. The set was released in 2025.
The assembly guide is prepared in a very understandable way for children and adult LEGO enthusiasts. A total of 116 instruction pages are shown, explaining the step-by-step construction stages across 2 booklets.
