Most Laundry mat guys want to make more money by speeding up the timer so it will shut down faster requiring more money to be inserted into the machine. My friend has a contract with several laundry mats in the area. Here is how he does it. He will repair any machine and provide parts for no charge at all anytime. He gets 50% of the take. He totes the keys to the machines. He orders the machines for the owner and installs them. When the natural gas went up sky high he ordered faster cams. He changed motors to ones that ran faster. He added a water well to the rear of some buildings. The water system figured out a way to charge him for sewer use anyways. You can't win.