I need instructions on how to assemble Part No 33076 for Model 917.387370

Well, this isn't Sears. What is it you are trying to assemble?

Craftsman Lawn Mower Model 917.387370 Parts from RepairClinic.com (http://www.repairclinic.com/Craftsman-Lawn-Mower-Model-917387370-ID-885155-Parts)

Hi,
You refer to the bagger, which checking at Sears appears to be a bit different.
Take this link and ask to Chat, or Get Help. See:
http://www.searspartsdirect.com/partsdirect/part-number/33076/0071/071&pathTaken=partSearch&blt=14&prst=0&shdPart=33076
Peace,
Clarke