
The plumbing and instruments on the machine itself, as opposed to the hose that runs out to the gun. Water inlet filters, short high pressure assemblies made to a specific machine, suction hose tails, gauges, pressure switches and coupling flanges. These are the parts that decide whether a pump gets clean water at the right pressure and whether the machine knows when to stop.
| Part | Detail | Fits | Part number |
|---|---|---|---|
| Hose assembly | - | K250 15 170S | 115 32081279 |
| Hose assembly | - | K701 | 115 33011184 |
A pressure switch that chatters is usually not faulty. Nine times out of ten it is an unloader that is not holding, so the pressure bleeds off the moment the pump stops, the switch closes again, and the machine hunts. Fit an unloader kit first and you will save yourself a switch and a control board.
Browse Pressure Washer HoseBrowse Filters, Couplings and Foot ValvesBrowse Pressure Cleaner Spare Parts