Most of the Industrial machines that we have serviced and sold are almost always attached to a trailer rig. These machines weigh about 250 lbs (to start) and should always be tank fed.
The average water pressure for a home in Florida, for example, is about 2.5 gallons per minute. This machine draws 8 gallons per minute which will obviously require a substantial increase from the 2.5 that is usually available. So we attach a 200 gallon (minimum) water tank with a float valve that will draw water from the source once the supply in the tank drops below a certain level. This allows us to use industrial pressure washers in residential and commercial areas without blowing up a pump. Most Industrial machines do not offer a Pull Cord simply because of the power needed to start the machine. The engines are often bigger than a dirt bike engine and would be nearly impossible to pull start. You will also note that most machines require a separate fuel tank. It would simply be annoying to have to refuel every 30 minutes. These machines are powerful and require quite a bit of fuel.