LEGO 70421 Building Instructions
![LEGO 70421 Construction Set manual cover](/images/DshWSsyYmznuoJFfQcCtHJdG/thumbs/thumb175x175.webp)
Before you start building, open the box and use the included inventory sheet to check off each piece. If any parts are missing, contact LEGO customer support for replacements.
Sort the pieces by color and size into small containers or trays. This makes it easier to find the parts you need and speeds up the building process.
Double-check the piece against the instruction manual. Ensure it is oriented correctly and that preceding steps were followed accurately.
Carefully remove the sticker and realign it using tweezers for precision. If the sticker is damaged, contact LEGO for a replacement sheet.
Use a soft cloth or brush to remove dust. For more thorough cleaning, wash the pieces in warm soapy water and let them air dry completely before reassembly.
Use the LEGO brick separator tool to gently pry apart pieces without damaging them. Follow the instructions in reverse order for efficient disassembly.
Disassemble the set and store pieces in a plastic container with a lid. Keep the instruction manual in a safe, dry place to prevent damage.
Yes, LEGO 70421 is compatible with other LEGO sets, allowing for creative and custom builds. Experiment by mixing different sets to create unique constructions.
Visit the LEGO website to download a digital version of the instruction manual or contact LEGO customer service for assistance.
Keep the set away from direct sunlight to prevent color fading. Regularly dust the pieces and check for any loose connections that may need reattaching.