True,
there is not much to them. Back in the day, when my dad was a service tech for Sears, he mostly replaced timers, belts, mix valves, pumps, the little things. The occasional motor.
A heavily used washer, or one in a larger family or abused occasionally needed a clutch or a spin tube rebuild with new oilite bearings. if the machine was very old, Sears used to offer a credit towards a new one if the customer had a service policy when the repair cost was too high.
Once, a Ford engineer argued with him about his dryer motor. The ignitor wasn't operating. The customer insisted the motor had nothing to do with it. My dad explained that the motor had the ignitor energizer in it's start circuitry. He didn't buy it, and refused to have it repaired. My dad then asked why his newer Ford Galaxie 500 was hard starting.