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Repair Parts Home    Lawn Equipment Parts    Karcher Parts    Karcher Pressure Washer Parts    Karcher K 3.99M-Plus (1.423-235.0) Pressure Washer Parts
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 # Part # Img Part Name Availability Price Qty
A-19.036-808.0
Cover
Ships in 6 - 8 business days
 $54.10
A-39.036-737.0
Bolt
In stock
2 available
 $3.84
A-49.086-173.0
Screw
In stock
12 available
 $1.13
A-59.037-038.0
Accessories Bracket
In stock
2 available
 $7.07
A-69.036-724.0
Handle
Ships in 6 - 8 business days
 $16.62
A-79.036-727.0
Plug
In stock
1 available
 $1.30
A-89.036-738.0
Turning Knob
In stock
2 available
 $4.16
A-109.084-087.0
Cable
Ships in 6 - 8 business days
 $154.49
A-109.084-132.0
Cable
Backorder:
No ETA.
 $37.73
A-129.048-067.0
Cap-Tank
Note: Version 1
In stock
2 available
 $5.81
A-149.036-729.0
Filter
Note: Version 1
Ships in 6 - 8 business days
 $2.53
A-159.036-722.0
Moulded Part
Ships in 6 - 8 business days
 $14.15
A-169.036-730.0
Cover
Ships in 6 - 8 business days
 $3.36
A-179.036-711.0
Cover
Note: Version 2
Ships in 6 - 8 business days
 $27.36
A-189.036-893.0
Rm-Tank K3./4.9xmd
Note: Version 2
Ships in 6 - 8 business days
 $16.72
Fig #Part #ImgPart NameAvailabilityPrice

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Pressure Washer Parts

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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