Warning! Incoming Cargument!

Think of a pinball machine warranty as a heavy equipment warranty vs. a passenger car warranty.
An excavating contractor has very different ideas of what a problem with a bulldozer is compared to your grandma's minivan.
The excavating contractor probably has a mechanic on staff, or contracts with a service company. They will only go back to the manufacturer with a warranty claim if something catastrophic happens.
Your grandma will probably be back at the dealer to check the air in her tires.