Member Discussion
on Karcher K 3.97 M Pressure Washer
no pressure
Had this only 3 years. used only about twice a year, maybe 3. that's only 9 times MAX! Checked our water pressure, not the problem. Cleaned out filter, not the problem. Unit seems to cycle on and off pressure noise. Tried letting stream run til heavy, then turned on and that didn't work either. Unit immediately becomes low pressure again. Help please.