Thunder Blazer – 7420 lego guide 7 years ago BUILDING INSTRUCTIONS FOR 7420, Thunder Blazer, Adventurers Set Number: 7420 Theme: Adventurers Launch Year: 2003 Thunder Blazer – 7420 File Size – 3.76 Mb Description – BI 7420Download Thunder Blazer – 7420 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