Http://www.fixya.com/support/t2162702-karcher_electric_press_wash_hums_when
This is going to seem silly, but have you checked the water inlet line for obstruction? Most come with a filter screen for catching the larger stuff, if it is clear, you need to have your unit lubricated and inspected.
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Http://www.fixya.com/support/t2162702-karcher_electric_press_wash_hums_when
This is going to seem silly, but have you checked the water inlet line for obstruction? Most come with a filter screen for catching the larger stuff, if it is clear, you need to have your unit lubricated and inspected.