How do you rebuild a craftsman 580.767450 pressure washer pump?

To rebuild a Craftsman 580.767450 pressure washer pump, start by disconnecting the power and water supply, then remove the pump from the unit. Disassemble the pump by unscrewing the housing and removing the old seals, O-rings, and pistons, taking care to note the order of parts. Clean all components thoroughly, then replace any worn parts with new ones, reassemble the pump, and ensure all seals are properly seated. Finally, reattach the pump to the pressure washer, reconnect the water supply, and test the unit for proper operation.