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A portable parts washer for cleaning mechanical parts that includes a washer body having an upper portion, a lower portion, and a wash basin formed within the upper portion having inner sidewalls, a floor panel and at least one drain aperture. The portable parts washer also includes an in-use reserv

A portable parts washer for cleaning mechanical parts that includes a washer body having an upper portion, a lower portion, and a wash basin formed within the upper portion having inner sidewalls, a floor panel and at least one drain aperture. The portable parts washer also includes an in-use reservoir formed within the lower portion of the washer body and having a bottom panel spaced from the floor panel and outer sidewalls, and which is configured to receive cleaning fluid from the wash basin through the drain aperture when the floor panel is in a substantially horizontal orientation. The portable parts washer further includes a storage reservoir formed within the upper and lower portions and which is configured to contain the cleaning fluid from the in-use reservoir when the floor panel is rotated to a substantially vertical orientation.

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1. A method for cleaning mechanical parts with recirculating cleaning fluid, the method comprising: obtaining a portable parts washer configured for rotation between an in-use horizontal orientation and a totable vertical orientation, the parts washer comprising: an outer shell comprising outer side

1. A method for cleaning mechanical parts with recirculating cleaning fluid, the method comprising: obtaining a portable parts washer configured for rotation between an in-use horizontal orientation and a totable vertical orientation, the parts washer comprising: an outer shell comprising outer sidewalls extending upward from a bottom panel to a top edge when the parts washer is in the horizontal orientation;a wash basin comprising inner sidewalls extending upwardly from a floor panel to the top edge to define a wash basin opening, with the inner sidewalls being spaced inwardly from the outer sidewalls and the floor panel being spaced above the bottom panel to define an internal reservoir surrounding the bottom and sides of the wash basin and configured to receive a cleaning fluid from the wash basin through at least one basin drain aperture defined in the floor panel when the parts washer is in the horizontal orientation; anda handle formed into one of the outer sidewalls and adapted to suspend the parts washer in the vertical orientation; carrying the parts washer in the vertical orientation by the handle to a location proximate the mechanical parts to be cleaned, with the parts washer maintaining a predetermined amount of cleaning fluid within the wash basin; placing the parts washer on a support surface; rotating the parts washer to the in-use horizontal orientation;connecting a pumping unit to a source of electrical power; andactivating the pumping unit to withdraw the cleaning fluid from the internal reservoir and to discharge the cleaning fluid onto mechanical parts placed within the wash basin. 2. The method of claim 1 wherein the parts washer further comprises a lid rotatably coupled to the top edge of the outer shell and configured to cover the wash basin opening when the lid is in a closed position. 3. The method of claim 2 wherein an inside surface of the lid of the parts washer forms a drying surface when the lid is in an open position. 4. The method of claim 3 wherein the lid of the parts washer includes an extendable support bracket for supporting the lid over a base surface. 5. The method of claim 1 wherein the parts washer further comprises the pumping unit configured to withdraw the cleaning fluid from the internal reservoir and to discharge the cleaning fluid into the wash basin. 6. The method of claim 5 wherein the pumping unit of the parts washer includes a pump connectable to the source of electrical power and having an inlet in fluid communication with the internal reservoir and an outlet, a flexible tube in fluid communication with the outlet, a nozzle in fluid communication with the flexible tube, and a switch configured to activate the pump. 7. The method of claim 5 wherein the parts washer further comprises a pump receptacle formed into the wash basin and configured to support the pumping unit above the internal reservoir. 8. The method of claim 1 wherein the parts washer further comprises a strainer removably coupled within the at least one basin drain aperture. 9. The method of claim 1 wherein the cleaning fluid of the parts washer is maintained at an ambient temperature. 10. The method of claim 1 wherein the cleaning fluid includes a surfactant. 11. The method of claim 1 wherein the internal reservoir of the parts washer further comprises an in-use volume when the parts washer is in the horizontal orientation, and a storage volume when the parts washer is in the vertical orientation, and wherein the in-use volume and the storage volume share a common portion at the end of the parts washer opposite the handle. 12. The method of claim 1 wherein: when the parts washer is in the horizontal orientation, the volume between the inner sidewalls and the outer sidewalls and above the level of the floor panel defines a perimeter gap portion of the internal reservoir, andwhen the parts washer is in the vertical orientation, a lower section of the perimeter gap portion is included within the storage volume of the reservoir. 13. The method of claim 12 wherein further comprising a reservoir drain opening at the end of the parts washer adjacent the handle opening and in fluid communication with an upper section of the perimeter gap portion when the parts washer is in the vertical orientation. 14. The method of claim 13 wherein the outer shell of the parts washer below the level of the floor panel when the parts washer is in the horizontal orientation, and below the level of the basin drain aperture when the parts washer is in the vertical orientation, is continuous and without openings therethrough. 15. The method of claim 12 wherein the perimeter gap portion comprises is greater than or about 50% of a total volume of the internal reservoir. 16. The method of claim 1 wherein the parts washer further includes at least one drain seal adapted to seal the at least one basin drain aperture.