How to Fix a Pressure Washer (Part 1 of 2)
Вставка
- Опубліковано 28 лис 2024
- Watch how to diagnose low pressure issues in a pressure washer as Mark disassembles the washer's pump to find the problem.
Get replacement parts for your Karcher pressure washer here:
www.ereplacemen....
For replacement pressure washer parts from other brands, visit:
www.ereplacemen...
Read this video's repair article:
www.ereplacemen...
SUBSCRIBE AND NEVER MISS ANOTHER VIDEO!
www.youtube.com...
CONNECT WITH US!
Google+ ► plus.google.co...
Facebook ► / replacementparts
Twitter ► / toolparts
Linkedin ► / ereplacementparts.com
eReplacementParts ► www.ereplacemen...
THANKS FOR WATCHING!
Don't forget to LIKE and SHARE this video to help pass along helpful information to your friends! Your feedback and inquiries are also welcome so let us hear what you have to say with a comment below.
I am in debt to you guys. :) Thanks a ton.
I received a Karcher 2800OH from a co worker. It was not building any pressure, regardless of how much pressure was on the intake hose.
With this guide, I Tore down, cleaned and rebuilt the pump, and it works like a champ now. :)
Thanks Guys!!
@th19940305 Good question. Most pressure problems lead to the pump. If you've eliminated that the problem isn't located in the hose, gun, or nozzle, then you'll have to disassemble and clean the pump like in the video. If the cause is something more than just a dirty pump, then dismantling it and cleaning it should reveal what it is. As for what exactly might be causing the issue, it could be almost any part in the pump. Check each part for wear or damage and replace those that need replacing.
Sir, thank you very much for your detailed video. I JUST serviced my karcher pump after losing pressure, using your video as a guide. In fact, I paused the video a lot during the disassembly and reassembly. My unit is a year newer than the one in your video, so my repair was simple. Luckily my issue was only light valve and brass casing corrosion, no parts other than a few o rings and grease was needed for tighter seals. Thanks again!
@Spz03737 It is great to hear that you where able to fix your pressure washer yourself! I bet you saved a bunch of money doing it yourself and probably had a little fun in the process!
Thanks,
-Mark
@linked2gether It is possible but it would require some research. The most obvious issue is the mounting. You will need to make sure that the engine shaft is compatible and you might need to fabricate a mounting plate to mate the pump and engine together. The other issue is if the engine has enough power to run the new pump. The manufacture of the pump usually works closely with the engine manufacture to source an engine that will meet the requirements of the pump.
I hope this helps,
-Mark
Most pressure washers require the engine to spin at a constant 3400 RPM's. If the engine RPM's are even a few hundred RPM's too fast or too slow the pump will not pressurize or the pressure will surge and die. I would check the RPM's first. If that tests out OK then you will need to open the pump to see what has failed.
I hope this helps,
-Mark
@tudinerito Hi, the pressure washer will not pull water from the river on its own. It requires a pressurized water source that can provide the pump's specified CFM requirement. Using water directly from the river will also ruin the pressure washer's pump very quickly. The pump requires clean water, any sand or sediment in the water will wear the pump's components very quickly. Many pro's even filter house water before it enters the pump. I hope this helps and thanks for watching.
-Mark
I pulled the unloader valve, cleaned the corrosion in the aluminum casting and greased the o-rings. Works like a charm, no more low pressure and fooling with removing the tip. Thanks
@419Dmorrison The key to a stubborn bypass valve is a good pair of pliers. They must have teeth on them that are sharp and not worn. The more aggressive the tooth the better. I use SnapOn pliers with their Talon jaws. They seem to work great. Investing in a very good pair of pliers will still probably cost less than a shop will charge and you will have the pliers for future repairs.
Thanks for watching,
-Mark
This video is very helpful. I just happen to have the same exact pressure washer with little to know pressure. Do you happen to remember what parts were ordered for this pump? Is taking it apart the only way to change the oil in this pump? The pump is probably about 20 years old. Amazed that you chose the exact same machine for your demo. Thank you for your time.
Thanks for the video Mark. I took the pump apart, cleaned it, and replaced the unloaded valve I ordered from E Replacement Parts, great site by the way. I have a Karcher G 2600 VH. As soon as I run water through the washer the engine stalls and shuts off. I have to use a wrench to loosen the hose off the handle because there is so much pressure built up. I did replace the unloader valve and only added lubricant to the top O ring and seated it. I am at a loss for what is causing it.
Thanks for this detailed video. I have the exact same problem on a used Karcher exactly like this one. I had already disassembled the pump, cleaned and reassembled but I did not discover that unloader spill valve piston until watching this video. I am confident I will get mine working tomorrow after addressing that valve. Everything else looked fine on mine. Thanks a Lot for the tips.
@mrFoos54 It does sounds like the piston seals. Probably the three closest to the engine. When I rebuild a pump if I find evidence of one set of seals being worn I will replace both sets. I figure if one set is causing a problem the other can't be far behind.
Thanks,
-Mark
suggestion: remove the unloader valve BEFORE taking the pump assembly off the unit.
1) hook up the hose and turn on the water.
2) remove the cap, 2 torx screws, and white plastic housing.
3) pull the starter cord. The engine doesn't have to start, just needs to crank a few pressure waves to pop the valve out the top. :)
Great video! The best way to remove stubborn bypass valve is to remove the plastic housing and connect the pump to water hose as usual, turn on the water and start the motor. CAUTION: The valve will fly out so make sure no one and nothing is in its path. Also be sure to do it in an area when you will recover the valve.
i have a new washer 2600psi that i only used a few times. when i first start the engine, i put it to choke. but when i run the engine lean, the engine dies every time. is it the engine or the water pump assembly causing it? thanks.
Thanks for the great video, Mark. My Karcher pulsates the high pressure as you mention. I can see bands where the water hits the cement patio. What would cause this? Thanks.
I need this guy to fix my pressure washer
Suberb vid! I've been using this great tut to try and repair another brand of PW that uses the same valves but could you please let me know how you pulled the valves out without damaging them as the valves on the one I'm working on seem to be stuck fast with scale/corrosion.
some of the best DIY videos on you tube
Great video.....you did not indicate what type of oil to use upon reassembly. Can you please provide that information?
Also, is there a parts kit avalable for rebuild or do the parts have to be ordered separately?
Thank you for your help.
Outstanding video, this gives me the information and confidence to go orward with my repair on my Karcher. Thanks for your post.
I have a simpson pressure washer ps4033 with a AAA pump # 530004. After replacing the outlet valve, no pressure and the valves broke again. I then replaced the outlet valves a second time along with the unloader/bypass valve and a new boost valve bit (which appears some sort of relief valve). Still no pressure in fact, it is little more pressure than when the machine if off. What should I try next?
Hi Mark I have a question. I have a briggs N Stratton Engine, 11.5 HP with a 3300 PSI max water pump. I want to increase the max PSI. Is it possible to replace the pump with one that has a higher max PSI output without replacing the engine as well? I am hoping that I could just pop it off and put on a new one or just raplace the pump heads. thanks, Mike.
What kind of a puller do I need to remove the pump from the motor, Karcher 2400
what type of oil should i buy to replace the old oil?
I called ereplacementparts and we seem to be having trouble finding a part number or description. Bypass valve or unloader valve isn't recognized in their data base. It looks like I have the exact same pwr washer as in the video. Do you have anymore ways I can describe the bypass valve or get a part # ? Thanks
Michael,
You don't have an option for a direct reply so hopefully this gets to you. Replacing the unloader valve should have taken care of the problem. Were the Seals and Ball Bearing grease before installation? You may want to remove the valve and try flushing the system and reassemble the pump.
Looks like you've done a few of these...
I take it the zero maintenance pumps on the vertical engined washers can't be rebuilt??
This is fantastic.! Almost the same services with Pressure Washing Ashevile of Asheville Gutter Cleaning and Maintenance. They really do great pressure washing services in Asheville, NC.!
Is that the only way to change the oil? You have to remove pump and take it apart? Thanks
I have a Karcher G 2600 VH which has a 160 cc Honda motor, the problem I'm having is while operating (spraying) it's like I've cut the water off at the handle, I can hear the motor still running however there is little hesitation and then the pressure comes back and I can continue spraying. It's like something is cutting the water off and on again, I have plenty of water pressure coming into the pressure washer so I hoping you can give me something else to check.
Hi Al. You may want to replace the unloader (or spill valve). Here is a video that should help you replace it:
ua-cam.com/video/SAhiUyk3TIk/v-deo.html
If you need a new part, you can search your model number and find the right part for your pressure washer here:
www.ereplacementparts.com/karcher-pressure-washer-parts-c-33388_33389.html
I hope this has helped with your repair!
ahhhhhhh it's called a spill valve :) Pwr washer is fixed and working fine. Thanks Mark
If you can't get that spill valve out of the housing count on replacing the pump if you have a hex drive pump. The replacement housing superseded by a part that simply does not fit.
Great video for a specific problem with this Karcher model.
I have a greenworks 1700. it keeps shutting off and after a few trys it blows the breaker.any clue to what may cause this.? thanks
You Sir, are awesome for making this video and others. I'm ordering parts today for my pwr washer and compressor. Thank You Kindly
Hi and thank you for the video.
I have a G3050OH (Karsher) with a Honda GC190 engine. Last year I cleaned up the carburetor on it because the idle speed was always fluctuating up and down. So I tore the carburetor apart and cleaned it thouroughly and the idle speed of the engine was finally ok..
I did this at the end of last year before storage and I didn't think about it but I ran the engine and pump without a water supply. I don't know if I damaged the pump.
This year I wanted to clean my car. Took out the pressure washer, it had fresh gas in it with stabilizer (and no ethanol), plugged the water hose to it and it started perfectly.
I then pulled on the trigger and nothing happen other than the engine loosing a couple of rpm. No water pressure at the end of the hose. Looks like the trigger doesn't raise the RPM of the engine. But if I move the governor and raise the engine revolution, there is pressure in the water.
DID I KILLED THE UNLOADER VALVE last year by running it dry?
What should I do?
Thanks for the awsome video by the way, will use it as futur reference.
@th19940305 That being said, the problem is almost certainly caused the bypass valve ("unloader" valve), like in our video.
Thanks for the great comment and question! We'll do another pump disassembly when a different type of pump comes through the shop. The season is almost over and most of the pressure washers we see are Karcher machines like in the video, so it may be a while . . .
one of the best videos,, but what kind of oil did you put in it ?
My Karcher K2400HH uses Karcher 15W40 (Part #6.288-050.0),
but you should be able to use any brand Non-detergent Non-foaming 15W40 Pump Oil.
you'd mentioned rapid pressure cycling as one of the "big three" problems- that's what's happening to my karcher 3025. what's the usual cause of that?? advise me, my order to ereplacementparts goes in the same day! great video- muchas gracias!
The most common cause for this is weak or defective valves in the pump.
@rickylain It could be a bad unloader valve on the pump. It could also be engine related. My guess without actually seeing the machine would be an issue with the carburetor on the engine. I would clean the carburetor and see if that helps. Take a look at our video titled "How to Clean a 4-Cycle Engine Carburetor".
I hope this helps,
-Mark
I have a Champion CPW1800 (Red) which has exactly the same symptoms as your example here.
Being a domestic type, mine is powered by an electric motor so there are quite a few physical differences.
There are only a limited amount of parts available for my PW so I am hoping it will just be a clean and reassemble.
I don't really know where to start though! Will I have the same problems with oil etc?
Do you have any examples of my type?
I would really appreciate your help. I'm in the UK.
Hi Brian,
I have been unable to locate any information to accurately help you. This looks like a Canadian or European model? All of the manufacturers have their preferences for lubrication. Some require 10/30 Synthetic while others use 30wt Non detergent, but I am not familiar with the Champion pumps and don't want to give you incorrect information.
eReplacementParts.com
Mark , then , can we use any of them without causing damage to the machine ?
I have a pressure washer witch the engine is running fine, the pump kicks fine but I get water inside the engine oil, any idea what is the problem? it is a seal between the pump and engine or is just the housing?
Mark, Can’t quite figure out how to install the oil sealing seals on a karcher g2401oh. It’s part c-5 on the parts diagram. I don’t know if it supposed to be sandwiched between the 2 metal flanges or sit on top of it. Any info would be appreciated Thanks
Hi Jason, and thank you for your question. If you check out part 2 of this "How to Fix a Pressure Washer" video, Mark re-assembles the pressure washer, and I think you will be able to determine where your part goes in. You can find the video here:
ua-cam.com/video/q2c2uUlP13s/v-deo.html
After applying a little bit of silicone grease, Mark installs the seals that sit against the piston into one half (gold) of the casting, then later installs the spacers and the caps into the other side of the casting (silver). I hope this helps you with the repair, but Mark does a great job explaining in the video if not! Please don't hesitate to reach out if you have any more questions!
Can you use a synthetic oil in the pressure washer part of the motor assembly.
what type of oil should I use in my Karcher
I bought a Ridgid 3000, 2.7GPM three years ago. Never did anything to it since. Started it on first pull and thought "wow". Tried to use it with water attached. It ran for 30 seconds with very low pressure then quit running. Think it is time to change all fluids and clean or replace the carb.
It has at least 50 hours on it.
How do I replace the pump oil on this model k2400HH
@eReplacementParts Thanks for the advice. I'll check it out.
Great Job .. very well explained
I have a pressure washer and it has great pressures when there's no hose on it but soon as I hook up the hose it gets weak .can you help
You the man Mark.
I did what you told me in the video and now my engine stopped working it doesn't let me even pull the cord to start it like its stuck can you help me ?
I have a unloader 193126gs for my pressure washer. can I buy a kit for it and how do i break it down? is there a video on how to put it together?
+carl clark This Unloader splits in the middle and comes apart. Please note: if this is failing the manufacturer recommends total replacement. They don't offer any replacement parts for this.
I REPLACED THE UNLOADER VALVE ON MY KARCHER 2600. STILL NO PRESSURE. PLENTY OF WATER, MOTOR RUNNING WELL. ANY ADVICE.
This was a huge help. Thanks a ton...
thanks videos on breakdowns of other models would be helpful like how to get the cases off of some karcher models mine is a K260M 1890 just getting inside is a challenge without the proper tools and that would be heplful to have a tool list check out ifxit for their tutorials I think my problem is the same with water leaking by as an added diagnostic problem
I have a G4000OH Karcher pressure washer that is blowing water out of what the transmission valve disk (per the parts list). Is this something I can repair.
I have a 2006 Karcher Pressure Washer, Model G 2500 VH. I am experiencing rapid pulsating pressure. The repair video's showed how to fix a low pressure problem. What is the fix for a pulsating high/low pressure. Do I need to replace a single part or is it a larger problem. The pump does make some noise while it is pulsating. If I run the washer without the wand and hose connected I do get a constant pressurized stream from the pump outlet with no noise. Does a bad hose cause the pulsating pressure?
Informative. Just have to get the unloader valve out now. Stuck.
We're do you put the vales at I don't know how they went couldn't see in video need help
The spill valve broke in half and I need to know how to remove the bottom half. I've replaced a spill valve before by using water to blow it out. This did' work with the bottom half.
Where are you guys located?
my pressure washer is a troy built 3700 4.0 gmp thing, and when I turn it on, there no pressure so to speak. how would I solve this?
how to use the detergent hose from my Karcher GC 160 model K2400 H H
I'm having this problem and took out the pressure valve and greased it but I still have the same problem.
what size is the shaft on that model?
I have a Power Boss power washer by Briggs and Stratton 2600 with a Honda engine. When I pull the trigger on the sprayer, it gives a small blast of water and the pump seizes up and stops the engine. Does anyone have an answer why this is happening?
Great video! Very informative! Thanks
Good job
Hi, Ive been looking on here for a while to find a solution for my pressure washer issue and yours is the closest to it so maybe you can help me. I have a surging problem only when the gun is engaged. Once I start spraying the water comes out strong then gets weak, then strong again and weak again over and over. When I turn the idle higher it does the same thing just at a faster pace. Once i let go of the trigger, the idle is fine. Any ideas?
Cool thanks for the help!!
Thats not the pump. Thats the carborator. Get a can of carb spray, remove the carborator from the engine and take it apart. The jets are most likely clogged, and just need to shoot some carb spray through them to fix the issue. I used to manage 20 go karts, and we saw this issue frequently with our honda GX160 engines.
Hi that was very informative,but it seems to be very hard for me, I have the same pwer washer, I need to find somebody to repair or is it worth it? Do you think I just need to buy a new one instead. can you help me find a repair man, I live in Silver Spring maryland
I have a Honda gx390 that it starts and after a while it shuts down does anyone know a reason for this
low oil switch check engine oil if full just unhook switch good luck
do you know how to repair a high pressure hose!?, it leaks from one end.
janderro What is the model number on the hose you're working with?
I see this video..nice.model are the best
Thanks.
I bought a new unloader valve from eReplacementParts but that didnt fix the problem. The pump still pulsates and will not get enough pressure for wand to work correctly. Any ideas?
its a karcher g2301lt.
My Power washer turns on fine but it turns off after 10 min of use
Super !
karcher gives so much trouble.
First.....................dont buy the crapppy washer in this video.........get a honda gx-160 with a udor or a cat pump and you will NEVER have issues.....all you will ever need to do is oil change occasionaliy and valves every 5 years...........and you can do this yourself at home in 15 minutes
Need help on your video shooting anfd editing. I know i am a professional . Other then that great info.
Misleading video. Notice the camera change when he was trying to remove the unloader valve. These NEVER come out with needle nose pliers. I have two that I can not get the valve out. Follow the advice of others here, get another brand and steer clear of working on these pumps.
I had to get Long Nose Locking Pliers before I could get it out. I also had to file down the sides of the pliers so they'd fit down in the hole.