Karcher Pressure Washers 11073080 2017 Pump Rebuild

Grab the plastic housing at the end of the spark plug wire.

Pull firmly to disconnect the wire from the spark plug.

Use a 24 mm socket to remove one of the manifold cap bolts on the pump manifold.

Use a pair of needle-nose pliers to pull the check valves straight out of the pump manifold.

Use an angled pick or tweezers to pull out and remove the O-ring inside the pump manifold.

Use a pick or tweezers to slide the O-ring off of the manifold cap bolt.

Repeat the last four steps for each of the manifold cap bolts to replace the rest of the check valves and O-rings.

Reassemble the manifold cap bolts before continuing to the next step.

Use a 12 mm hex key to remove the two manifold stud bolts.

Remove the pump manifold.

Use a pick or tweezers to pry out and remove the high pressure seal.

Use a pick to pry out and remove the inner high pressure seal.

Repeat the last three steps for the other two cylinders to replace the remaining seals.

Use a pick or tweezers to lift the manifold O-ring out of its groove in the crankcase.

Use a pick or flathead screwdriver to gently pry the pressure ring out of the crankcase.

Use a pick or tweezers to slide the O-ring off of the pressure ring.

Use a pick to pry out and remove the low pressure seal from inside the pressure ring.

Use a pick or tweezers to pry out and remove the smaller washer sitting around the piston.

Use an angled pick or tweezers to pull out the larger washer sitting around the piston.

Use a 10 mm socket to remove the plunger bolt.

Your rebuild kit may not include the plunger bolt. If not, pull the bolt and the washer out of the plunger and transfer them to the new plunger.

Use an angled pick or tweezers to remove the inner-most washer.

Repeat the previous nine steps for the other two cylinders to replace the remaining seals, washers, and plungers.