Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number
Karcher K1800G power washer

Karcher K1800G power washer Parts

Here are the diagrams and repair parts for Karcher K1800G power washer, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for K1800G Pressure Washers

  • Spring for Karcher K1800G - Part 5.332-391.0

    Spring

    Part #5.332-391.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Exhaust for Karcher K1800G - Part 6.491-526.0

    3.2 motor - 1.133-114.0 /-122.0 diagram

    Exhaust

    Part #6.491-526.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Hexagonal Head Screw (4) for Karcher K1800G - Part 7.304-075.0

    2.5 cylinder head/pump set diagram

    Hexagonal Head Screw (4)

    Part #7.304-075.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Starter Rope for Karcher K1800G - Part 6.491-294.0

    3.2 motor - 1.133-114.0 /-122.0 diagram

    Starter Rope

    Part #6.491-294.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Pressure Washer Spill Valve for Karcher K1800G - Part 4.591-040.0

    Pressure Washer Spill Valve

    Part #4.591-040.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Plate for Karcher K1800G - Part 6.401-291.0

    Plate

    Part #6.401-291.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Cylinder Head for Karcher K1800G - Part 5.550-294.0

    2.5 cylinder head/pump set diagram

    Cylinder Head

    Part #5.550-294.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Coupler for Karcher K1800G - Part 9.154-009.0

    1.0 piece parts/wheel/cover diagram

    Coupler

    Part #9.154-009.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Toro High Pressure Hose for Karcher K1800G - Part 6.389-555.0

    4.1 trigger gun-version 1/piston diagram

    Toro High Pressure Hose

    Part #6.389-555.0

    The manufacturer no longer makes this part, and there's no substitute part

  • Screw (4) for Karcher K1800G - Part 9.196-022.0

    1.0 piece parts/wheel/cover diagram

    Screw (4)

    Part #9.196-022.0

    The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your pressure washers

Choose a symptom to see related pressure washer repairs.

Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine nee…

Main causes: using a high-pressure spray tip when applying detergent, clogged siphon tube, chemical injection system fai…

Main causes: dirty air filter, stale fuel, clogged or dirty carburetor, bad unloader valve…

Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston…

Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad re…

Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, ba…

Things to do: tune up the engine, inject pump saver into the water pump when storing the pressure washer for the winter…

Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stu…

Main causes: faulty unloader valve, bad pressure regulator…

Repair guides for gas pressure washers

These step-by-step repair guides will help you safely fix what’s broken on your pressure washer.

How to replace a pressure washer pump

How to replace a pressure washer pump

The pump can be damaged by air in the inlet water supply or by chemicals that remain in the pump body after using the ch…

Repair time and Difficulty

 15 minutes or less
How to install a pressure washer O-ring kit

How to install a pressure washer O-ring kit

O-rings seal fittings on the pressure washer pump. Damaged seals allow water to leak from the pump. Follow these steps t…

Repair time and Difficulty

 45 minutes or less
How to replace a pressure washer unloader valve

How to replace a pressure washer unloader valve

The unloader valve recirculates water to protect the pump from damage. If the unloader valve is defective, replace it us…

Repair time and Difficulty

 15 minutes or less

Effective articles & videos to help repair your pressure washers

Use the advice and tips in these articles and videos to get the most out of your pressure washer.

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Parts & More

Bottom-Mount Refrigerator
Dishwasher
Electric Cooktop
Front-Engine Lawn Tractor
Humidifier
Laundry Center
Microwave/Hood Combo
Parts
Power Pruner
Riding Mowers & Tractors
Room Air Conditioner
Television
Tool Cabinet