XT4 – 6229 lego guide 7 years ago BUILDING INSTRUCTIONS FOR 6229, XT4, Hero Factory Set Number: 6229 Theme: Hero Factory Launch Year: 2012 XT4 – 6229 File Size – 2.14 Mb Description – 6221 NEX + 6229 XT4Download XT4 – 6229 building instruction XT4 – 6229 File Size – 4.25 Mb Description – BI 3010/28-6229 V.39Download XT4 – 6229 building instruction Print Versions Building instructions labeled “NA” or “V39” may be printed on US standard letter size paper Building instructions labeled “IN” or “V29” may be printed on EU standard A4 paper