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Karcher K 3.99M-Plus (1.423-235.0) Pressure Washer

 Karcher K 3.99M-Plus (1.423-235.0) Pressure Washer Parts

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 Fig # Img Part Name Availability Price
A-1
Cover
Part #: 9.036-808.0
Ships in 7 - 10 business days
 $53.89
Add To Cart
A-3Bolt
Part #: 9.036-737.0
In stock
1 available
 $3.82
Add To Cart
A-4Screw
Part #: 9.086-173.0
In stock
4 available
 $1.13
Add To Cart
A-5Accessories Bracket
Part #: 9.037-038.0
In stock
3 available
 $7.05
Add To Cart
A-6Handle
Part #: 9.036-724.0
Ships in 7 - 10 business days
 $16.55
Add To Cart
A-7Plug
Part #: 9.036-727.0
Ships in 7 - 10 business days
 $1.29
Add To Cart
A-8Turning Knob
Part #: 9.036-738.0
In stock
2 available
 $4.15
Add To Cart
A-10
Cable
Part #: 9.084-087.0
Ships in 7 - 10 business days
 $153.89
Add To Cart
A-10Cable
Part #: 9.084-132.0
In stock
1 available
 $37.59
Add To Cart
A-12Cap-Tank
Part #: 9.048-067.0
Note: Version 1
In stock
2 available
 $5.79
Add To Cart
A-14
Filter
Part #: 9.036-729.0
Note: Version 1
Ships in 7 - 10 business days
 $2.52
Add To Cart
A-15
Moulded Part
Part #: 9.036-722.0
Ships in 7 - 10 business days
 $14.09
Add To Cart
A-16
Cover
Part #: 9.036-730.0
Ships in 7 - 10 business days
 $3.36
Add To Cart
A-17
Cover
Part #: 9.036-711.0
Note: Version 2
Ships in 7 - 10 business days
 $27.25
Add To Cart
A-18
Rm-Tank K3./4.9xmd
Part #: 9.036-893.0
Note: Version 2
Ships in 7 - 10 business days
 $16.66
Add To Cart
Fig #ImgPart NameAvailabilityPrice

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Pressure Washer Parts

Repair Articles

How to Winterize a Pressure Washer
How to Winterize a Pressure Washer

Learn how to properly winterize your pressure washer by adding antifreeze to the pump, draining the oil, and adding oil to the piston. Read the full article for a step-by-step guide.
How to Test a Small Engine for Spark
How to Test a Small Engine for Spark

If your small engine isn't starting, you'll need to diagnose many issues including the spark plug. This video walks you through the steps of how to test for a spark using a spark tester.
Quick Fix: How to Replace the Outlet Connector on a Karcher Electric Pressure Washer
Quick Fix: How to Replace the Outlet Connector on a Karcher Electric Pressure Washer

Learn how simple it is to replace the outlet connector on your Karcher electric pressure washer by reading this repair article.
A Quick Fix: How to Replace the Pump on a Pressure Washer
A Quick Fix: How to Replace the Pump on a Pressure Washer

This article outlines the steps to replace or service the pump on your pressure washer. Doing this repair yourself will save you money and time.
Discussion
Discussion for the Karcher K 3.99M-Plus (1.423-235.0) Pressure Washer

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tomnjo
Question: Shut Off

tomnjo

My pressure washer cycles on and off when the trigger is off. The motor is supposed to stop when you stop spraying and come on again when you start. Can't figure it out. No leaks anywhere. I've been into the pump many times and still don't completely understand all the features.
Wally
Question: On/off Switch

Wally

I have two K 3.99M pressure washers. Water is supplied and passes through the spray wand. #1, with power supplied, the manual switch will not start the pressure pump, and pops the GFCI. #2, with power supplied, the manual switch will not stop the pressure pump, nor will the pressure build up to stop it. Do I need 2 manual switches and at least 1 pressure cutoff switch? What are the part numbers? Thanks, Wally
Lynn K
Question: No Spray

Lynn K

My Karcher k 3.99 washer stopped spraying. There is weak spray from the gun. The motor doesn't come on and the hose pressure stays low.
fancyboxy