I have a 9 selected bottle Royal 804 bottle machine. On one of columns, when I put 20 oz bottle in it, it jams and nothing drops. If I put a 16.9 oz bottle in there, sometimes it works correctly, and other times it gives out 2 bottles. Anyone have any idea on how I can fix this problem? Is it a motor issue?
Is there a book that can teach one how to fix a soda or snack machine? Anyone have any recommendations on reading material? I have a bunch of vending machines on locations, but I am trying to learn more on how to fix the machines instead of paying 65 dollars for service charges.