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Model # K1800G Official Karcher power washer
Here are the diagrams and repair parts for Official Karcher K1800G power washer, as well as links to manuals and error code tables, if available.
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K1800G Pressure Washers
#19
3.3 motor diagram
Screw
Part #9.194-459.0
The manufacturer no longer makes this part, and there's no substitute part
#17
3.2 motor - 1.133-114.0 /-122.0 diagram
Exhaust embellisher
Part #6.491-527.0
The manufacturer no longer makes this part, and there's no substitute part
#16
3.3 motor diagram
Flange
Part #9.144-002.0
The manufacturer no longer makes this part, and there's no substitute part
#8A
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
#1
3.1 motor/engine oil diagram
Motor
Part #9.194-030.0
The manufacturer no longer makes this part, and there's no substitute part
#14
2.1 cylinder head/pump set diagram
Plug
Part #4.132-010.0
The manufacturer no longer makes this part, and there's no substitute part
#18
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
#21
3.3 motor diagram
Filter cover
Part #9.194-580.0
The manufacturer no longer makes this part, and there's no substitute part
Ball bearing
Part #7.401-038.0
The manufacturer no longer makes this part, and there's no substitute part
#0
3.2 motor - 1.133-114.0 /-122.0 diagram
Motor / 1.133-114.0 / -122.0
Part #9.194-011.0
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for gas pressure washers
Choose a symptom to see related pressure washer repairs.
Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stu…
Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston…
Main causes: dirty air filter, stale fuel, clogged or dirty carburetor, bad unloader valve…
Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, ba…
Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine nee…
Things to do: tune up the engine, inject pump saver into the water pump when storing the pressure washer for the winter…
Main causes: faulty unloader valve, bad pressure regulator…
Main causes: broken recoil spring, damaged recoil starter…
Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad re…
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 install a pressure washer check valve kit
Air in the inlet water supply can damage the check valves. If the pump won’t build up pressure due to damaged check valv…
Repair difficulty
Time required
120 minutes or less

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 difficulty
Time required
45 minutes or less

How to install a pressure washer chemical injection kit
The chemical injection valve draws detergent into the pump. If it’s not drawing detergent, use a repair kit to replace t…
Repair difficulty
Time required
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.

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