Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Karcher
Gas Pressure Washer

Model # HD3500 Official Karcher power washer

Here are the diagrams and repair parts for Official Karcher HD3500 power washer, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

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

Search
ALL PARTS
Showing 10 of 158 parts  |
Oil 6.288-050.0
Oil

Part #6.288-050.0

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

Motor / 1.810-994.0 / -996.0 / -997.0 9.194-001.0
#0

3.1 motor diagram

Motor / 1.810-994.0 / -996.0 / -997.0

Part #9.194-001.0

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

Valve 4.580-329.0
#31

2.1 cylinder head diagram

Valve

Part #4.580-329.0

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

Cylinder Head 5.550-273.0
#8

2.1 cylinder head diagram

Cylinder head

Part #5.550-273.0

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

Closing Screw 5.411-062.0
#8

3.4 gear diagram

Closing screw

Part #5.411-062.0

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

Hose 6.388-216.0
#25

2.2 chemistry diagram

Hose

Part #6.388-216.0

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

Gasket 6.362-810.0
#3

3.4 gear diagram

Gasket

Part #6.362-810.0

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

Handle 5.321-307.0
#6

2.2 chemistry diagram

Handle

Part #5.321-307.0

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

Closing Screw 5.411-070.0
#2

2.1 cylinder head diagram

Closing screw

Part #5.411-070.0

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

Closing Screw 7.382-235.0
#36

2.1 cylinder head diagram

Closing screw

Part #7.382-235.0

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.

View all

Why does my pressure washer spray too hard?

Main causes: faulty unloader valve, bad pressure regulator…

Read more

Why won't my pressure washer engine start?

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

Read more

Why does my pressure washer's engine lose power?

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

Read more

Why won't the pressure washer starter rope retract?

Main causes: broken recoil spring, damaged recoil starter…

Read more

Why is smoke coming from the pressure washer's exhaust?

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

Read more

Why does water spray out of my pressure washer's pressure relief valve?

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

Read more

Why is the spray from my pressure washer weak?

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

Read more

Why won't my pressure washer mix in the detergent?

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

Read more

Why doesn't my pressure washer recoil starter work?

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

Read more

Repair guides for gas pressure washers

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

View all
How to install a pressure washer chemical injection kit

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…

Read more
Repair difficulty
Time required
 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…

Read more
Repair difficulty
Time required
 45 minutes or less
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…

Read more
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.

View all
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.…

Read more
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…

Read more
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.…

Read more

Parts & More