The following events occurred on September 4.
- "Doc" Emmett Brown and Marty McFly retrieve the DeLorean time machine from the bear cave and attempt to pull it with horses to 88 mph, but are unsuccessful.
- Doc and Marty pour whiskey into the DeLorean's fuel tank, only to blow out the fuel manifold.
- Doc and Marty realize that a train will be able to push the DeLorean up to 88 mph and devise a plan.
- They investigate the incomplete Shonash Ravine bridge and notice a lady on an out-of-control wagon.
- Doc saves Clara Clayton from falling over the ravine.
- In the original timeline, Clara would have fallen in and the ravine would be renamed Clayton Ravine.