What you will need:
5/16 Nuts and Bolts
I would like to give credit to Nick Valenza, for the basis of my design.
Step 1: Get yourself a chainsaw
First thing is to get yourself a chainsaw. I went a little more authentic to the movie and got a Homelite XL off of Ebay. Before you ask, I didn't ruin a working chainsaw, it was being sold for parts. Perfect.
Step 2: Ex-motor
Remove the case screws and set aside, you will need these later.
Several of the parts, including the motor, are attached with screws. Find these and the motor will pop right out.
Step 3: Re-handling
While cutting pieces out, cut the oil and gas tanks down to just enough to still be held in place. The more room for your hand now the better.