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Karcher Pressure Washer 15209900 2018 Pump Rebuild

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  1. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Safety precautions: step 1, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Safety precautions: step 1, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Safety precautions: step 1, image 3 of 3
    • Before you begin, make sure to power off and unplug the device from the outlet.

    • Unscrew the output hose from the pressure washer.

  2. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the rubber strap: step 2, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the rubber strap: step 2, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the rubber strap: step 2, image 3 of 3
    • Unlatch and remove the yellow rubber strap.

  3. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the hand grip: step 3, image 1 of 1
    • Use a T20 driver to remove the two 55mm-long screws securing the hand grip.

  4. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the hand grip: step 4, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the hand grip: step 4, image 2 of 2
    • Remove the hand grip from the extension bars.

  5. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the top panels: step 5, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the top panels: step 5, image 2 of 2
    • Use a T15 driver to remove the six screws securing the top black plastic panels on either side of the device.

  6. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the top panels: step 6, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the top panels: step 6, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the top panels: step 6, image 3 of 3
    • Remove the two plastic panels.

  7. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the plastic feet: step 7, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the plastic feet: step 7, image 2 of 2
    • Remove the two T15 screws securing the plastic feet—one screw on either side.

  8. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the plastic feet: step 8, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the plastic feet: step 8, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the plastic feet: step 8, image 3 of 3
    • Unclip and remove the plastic feet.

  9. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the housing: step 9, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the housing: step 9, image 2 of 2
    • Use a T15 driver to remove the ten screws securing the housing halves together.

    • Remove the T15 screw underneath the wheel axle.

  10. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the housing: step 10, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the housing: step 10, image 2 of 2
    • Set the device on its side.

    • Lift the housing half away from the body.

    • If the housing half does not separate, check to make sure you removed all the body screws.

    • Remove the housing.

    • Screws may get stuck inside the plastic housing. Be careful not to lose any screws.

  11. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Release the cord strain relief: step 11, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Release the cord strain relief: step 11, image 2 of 2
    • Slide the power cord strain relief out its notch on the plastic housing.

  12. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the motor: step 12, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the motor: step 12, image 2 of 2
    • Lift the motor assembly out of the plastic housing and set it aside.

  13. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Reassembly tip: step 13, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Reassembly tip: step 13, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Reassembly tip: step 13, image 3 of 3
    • Reassembly tip: Use these images to help reassemble the housing back around the motor.

    • Make sure that all five bushings are in place.

    • In order for the housing to fit properly, the bushings must fit in their respective mounts.

    • Make sure that the yellow tube is properly notched onto the housing.

    • Make sure that the power cord strain relief sits correctly in the housing notch.

  14. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the electrical box cover: step 14, image 1 of 1
    • Use a T20 driver to remove the four screws securing the electrical box cover.

  15. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the electrical box cover: step 15, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the electrical box cover: step 15, image 2 of 2
    • Lift the cover off of the electrical box.

  16. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Loosen the capacitor: step 16, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Loosen the capacitor: step 16, image 2 of 2
    • Tilt the capacitor upward slightly to gain access to the connectors.

  17. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unplug the capacitor: step 17, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unplug the capacitor: step 17, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unplug the capacitor: step 17, image 3 of 3
    • Use your fingers to pull each capacitor connector directly off of their spade plug.

  18. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the capacitor: step 18, image 1 of 1
    • Remove the capacitor.

    • Reassembly note: The wires are non-polarized and can connect into either plug on the capacitor.

  19. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the plate spring: step 19, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the plate spring: step 19, image 2 of 2
    • Remove the plate spring from the electrical box.

  20. Karcher Pressure Washer 15209900 2018 Pump Rebuild: step 20, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild: step 20, image 2 of 2
    • Pull the switch out of the electrical box.

    • Disconnect the four spade connectors from the the switch.

  21. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the switch: step 21, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the switch: step 21, image 2 of 2
    • Remove the switch.

    • Reassembly tip: Use the second photo as a reference to help you properly re-wire the switch.

  22. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the grounding screw: step 22, image 1 of 1
    • Use a flat head screwdriver to remove the screw securing the ground wire in the electrical box.

  23. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Unscrew the electrical box: step 23, image 1 of 1
    • Use a T30 driver to remove the two bolts securing the electrical box to the motor assembly.

  24. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the electrical box: step 24, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the electrical box: step 24, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the electrical box: step 24, image 3 of 3
    • Lift the electrical box away from the motor assembly, taking care to feed the wires through the cutout.

    • Remove the electrical box.

  25. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the excess current cover plate: step 25, image 1 of 1
    • Use a T30 driver to remove the two bolts securing the excess current cover plate.

  26. Karcher Pressure Washer 15209900 2018 Pump Rebuild: step 26, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild: step 26, image 2 of 2
    • Remove the excess current cover plate.

  27. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the excess current valve: step 27, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the excess current valve: step 27, image 2 of 2
    • Use a pair of pliers to grasp the blue tab on the excess current valve.

    • Pull firmly to extract the excess current valve from the pump assembly.

  28. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the excess current valve: step 28, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the excess current valve: step 28, image 2 of 2
    • Lubricate the replacement valve's O-rings with the grease included in the rebuild kit.

    • Press the replacement valve back into the pump.

    • Replace the cover plate with a new one from the rebuild kit.

  29. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the fine filter: step 29, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the fine filter: step 29, image 2 of 2
    • Use pliers to grasp the tip of the fine filter in the water intake connector.

    • Pull the fine filter out of the intake.

    • Replace the fine filter with a new one from the rebuild kit.

  30. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the cylinder head plate: step 30, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the cylinder head plate: step 30, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the cylinder head plate: step 30, image 3 of 3
    • Use a hammer and pin punch to tap the cylinder head plate out of its groove.

    • Remove the cylinder head plate.

  31. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Set the motor upright: step 31, image 1 of 1
    • Set the motor assembly upright with the pump assembly on the top.

    • The pump assembly is filled with oil. This step prevents the oil from spilling out when you remove the pump.

  32. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Loosen the pump assembly: step 32, image 1 of 1
    • Use a 13mm socket to remove the four long bolts holding the pump assembly to the motor.

    • Re-assembly tip: The bolts hold the pump under pressure against the motor assembly. During reassembly, gradually tighten the bolts in a cross pattern.

  33. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the pump assembly: step 33, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the pump assembly: step 33, image 2 of 2
    • Lift the pump assembly off of the motor.

  34. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the pump oil: step 34, image 1 of 1
    • Pour the pump oil out of the motor housing. If the oil looks serviceable, save it for reassembly.

    • Reassembly tip: The piston assembly is sealed with oil, and the motor housing acts as an oil pan. Before you attach the pump to the motor, fill the piston well with oil, up to the bearing plate.

  35. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the motor/pump O-ring: step 35, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the motor/pump O-ring: step 35, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the motor/pump O-ring: step 35, image 3 of 3
    • Remove the motor/pump O-ring from the motor assembly.

    • Replace the O-ring with a new one from the rebuild kit.

    • Be sure to lubricate the O-ring with the grease included in the rebuild kit.

  36. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Separate the pump assembly: step 36, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Separate the pump assembly: step 36, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Separate the pump assembly: step 36, image 3 of 3
    • Use a large flat head screwdriver to loosen the cylinder head from the piston assembly.

    • Pull the cylinder head and piston assembly apart.

  37. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the pistons: step 37, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the pistons: step 37, image 2 of 2
    • Remove the three pistons and pressure springs from the piston assembly.

  38. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Reassembly point: step 38, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Reassembly point: step 38, image 2 of 2
    • Return to this step after you have finished the pump rebuild, and follow the instructions in reverse to reassemble your device.

    • Reassembly tip: Before putting the pump back together, make sure you have installed the following parts:

    • Three grooved rings

    • Three suction valves

    • One throttle piece

    • One joining piece

    • Three white washers

  39. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the white washers: step 39, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the white washers: step 39, image 2 of 2
    • Use a pick tool to remove the three white washers from the piston cylinders.

  40. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the black washers: step 40, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the black washers: step 40, image 2 of 2
    • Use a pick tool to remove the three black washers from the piston cylinders.

  41. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the grooved rings: step 41, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the grooved rings: step 41, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the grooved rings: step 41, image 3 of 3
    • Use a screwdriver to dislodge and remove the three grooved rings from the piston cylinders.

  42. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the rings and washers: step 42, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the rings and washers: step 42, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the rings and washers: step 42, image 3 of 3
    • Replace the sets of grooved rings, black washers, and white washers with new ones from the rebuild kit.

    • Apply grease to the replacement grooved rings.

    • Note the orientation of the grooved rings when you insert them into the piston cylinder.

    • When you replace the black washers, note that they are keyed to the piston cylinders.

  43. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the valve pin: step 43, image 1 of 1
    • Use a large flat head screwdriver to unscrew the green nozzle insert from the cylinder head.

  44. Karcher Pressure Washer 15209900 2018 Pump Rebuild: step 44, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild: step 44, image 2 of 2
    • Tip the nozzle down to dump out the nozzle insert.

    • Replace the gray valve pin with a new one from the rebuild kit.

    • Screw the green nozzle insert back into the port.

  45. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the black grooved rings: step 45, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the black grooved rings: step 45, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the black grooved rings: step 45, image 3 of 3
    • Remove the three black grooved rings from the cylinder head.

    • Replace the rings with new ones from the rebuild kit.

    • Reassembly tip: The groove side of the rings should sit against the cylinder head.

  46. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the suction valves: step 46, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the suction valves: step 46, image 2 of 2
    • Use pliers to pull the three suction valves out of the cylinder head.

    • Replace the suction vales with ones ones from the rebuild kit.

  47. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the throttle: step 47, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the throttle: step 47, image 2 of 2
    • Use pliers to remove the throttle piece from the cylinder head.

    • Replace the throttle piece with a new one from the rebuild kit.

    • Reassembly tip: The throttle piece is directional. The end with the larger opening should face the cylinder head.

  48. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the joining piece: step 48, image 1 of 2 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the joining piece: step 48, image 2 of 2
    • Use pliers to remove the joining piece from the cylinder head.

  49. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Loosen the center drain plug: step 49, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Loosen the center drain plug: step 49, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Loosen the center drain plug: step 49, image 3 of 3
    • Insert an L-shaped pick tool into the hole that was previously covered by the joining piece.

    • Press upwards to loosen the center drain plug.

    • The drain plug is firmly held in place and may require significant force to loosen.

  50. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the center drain plug: step 50, image 1 of 1
    • Remove the center drain plug.

  51. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the plastic valve: step 51, image 1 of 1
    • Remove the plastic valve from the center cylinder.

  52. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the remaining plugs and valves: step 52, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the remaining plugs and valves: step 52, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the remaining plugs and valves: step 52, image 3 of 3
    • Insert an L-shaped pick tool into the connecting channel on each side of the center cylinder.

    • Press upwards to loosen the drain plug.

    • Remove the black drain plug and the plastic valve underneath it.

    • Repeat the process for the remaining drain plug and valve.

  53. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the valve washers: step 53, image 1 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the valve washers: step 53, image 2 of 3 Karcher Pressure Washer 15209900 2018 Pump Rebuild, Remove the valve washers: step 53, image 3 of 3
    • It is likely that the metal valve washers did not come out with the plastic valves. Follow this step to remove the metal valve washers from the cylinder head.

    • Use needle-nose pliers to grasp the lip on the metal valve washers.

    • Pull the metal valve washers straight out of the cylinder head.

  54. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the plugs and valves: step 54, image 1 of 1
    • This photo shows how the pieces stack within the cylinder head.

    • Replace the drain plugs and valves with new ones from the rebuild kit.

    • Drop the valve back into the cylinder head.

    • Press the drain plug back onto the cylinder head.

  55. Karcher Pressure Washer 15209900 2018 Pump Rebuild, Replace the joining piece: step 55, image 1 of 1
    • Replace the joining piece with a new one from the rebuild kit.

    • At this point, you should have replaced all the parts that came with your rebuild kit. Click here to jump back to step 38, and follow the instructions in reverse order to reassemble the device.

Conclusion

At this point, you should have replaced all the parts that came with your rebuild kit. Click here to jump back to step 38, and follow the instructions in reverse order to reassemble the device.

2 other people completed this guide.

Arthur Shi

Member since: 01/03/18

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6 Comments

where do I get the part numbers for a pump rebuild kit/ as opposed to ordering the individual items??

DONALD - Reply

what is the part # for the pump rebuild kit.

PIERRE - Reply

2.883-037.0 pump rebuild kit.

BRIAN -

Don’t waste your time. Toss this thing in the trash.

PAUL - Reply

cant seam to be able to order the pump can someone clue me in

LOUIS - Reply

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