A pressure washer apparatus can have multiple output capacities defined by distinct water flow or pressurization paths. An operator can switch between flow or pressurization paths to vary pressurized water output, or combine multiple flow or pressurization paths to further vary pressurized water output. Different pressurized water outputs can have different fluid pressures, differing fluid flow rates, or the like, or a suitable combination of the foregoing. Some pressure washer apparatuses can achieve multiple output capacities while preserving a high power efficiency. Such an apparatus can be suitable for an electric powered device having relatively low power consumption yet favorable washing performance.

A combination sink and jet parts washer utilizing a minimum grip sprocket driving a rotating parts basket, for cleaning mechanical parts of oil, grease and contaminants. The washer has a cabinet which has a jet cleaning section, including the rotating parts basket. The basket is driven by a minimum grip sprocket drive mechanism. A parts basket in the jet cleaning section receives the parts which are cleaned by a spray from a spray manifold. The manifold is connected to a fluid pump which has its inlet communicating with the reservoir. A sink is positioned on the top of the cabinet and opens to access the jet washer and reservoir. In the closed position, the sink covers the top of the cabinet and may be used as a sink washer using the attached brush.