Common problems include low or no pressure after a few seconds use and soap not entering system properly. 2. Water supply must be at least 5 GPM @ 20 PSI (138 kPa). Q: Is the water inlet or filter screen blocked, clogged or damaged? Hi there! You can diagnose the problem in the pump by first checking the head of the pump. If screen is damaged, remove damaged screen, insert new screen. Magnetic tips on screwdrivers are a very underappreciated feature for tool sets, and you wouldnt believe how many times those have saved me from losing a tiny screw. 
You can remove this corrosion using a brush, and if it is widely spread, then replace the plug.
Besides these problems, using hot water in a cold water pump or a loosened or damaged spark plug can also lead to no pressure in your pressure washer. This warranty covers defects in material and workmanship. NOTICE: Risk of property damage Failure to do so could cause damage to the pump. If you dont already own all these hand tools and you plan on fixing your power washer on your own then this one of the better kits I could find. I had a hard time deciding to put hex keys or needle-nose pliers first because they are both used often. For steady low pressure, pump starvation and a loose belt could be the reason behind low pressure. 15 NOTICE: Risk of property damage. Worn or torn fill plug o-ring. Learn how to properly and safely use, troubleshoot and maintain your Briggs & Stratton equipment. Briggs & Stratton is Troy Bilts OEM (original equipment manufacturer) meaning Troy Bilt specifies certain things about the machine (eg. The first step for fixing the low pressure of your pressure washer is changing its oil and cleaning the filter. You need our DeWalt 3400 psi pressure washer manual to help you troubleshoot it for issues. Disconnect the hose from the inlet valve, and check if the supply is sufficient. If youre experiencing leaks, then there is a big chance that your spray gun is damaged. Steady low pressure basically happens when a pressure washer is producing a lower pressure than usual. you or others. Torx head screws are also used once you get to the engine block. If it is, remove the debris. We constantly update and improve this table. A gas engine has an oil filter to clean the oil when it is running. Adjust it in small steps to increase the pressure of the pressure washer. Also, ensure that there is no air entering the intake line from the chemical injector and that it is closed completely. Water will flow through the pump, now turn on the engine; the water flow should increase in pressure and length from where it exits the pump. There are pressure washers that can be used with cold water only. This nozzle delivers a less powerful stream of water and a wider spray pattern. Looking through my power washer logbooks over the last 8 years to see the most common issues. If your pressure washer produces low or minimum pressure, then it could mean that some components of your pressure washer are not working correctly. NEVER turn water supply off while pressure washer engine is running or damage to pump will result. Use high pressure hose under 100 feet (30m). If this does not happen there is an internal pump issue. 1. How We Test, Review and Recommend Pressure Washers, an AR Blue Clean electric pressure washer, 100% want to have silicone grease when you reinstall o-rings, Generac Pressure Washer Support Product Lookup, Troubleshooting Pressure Washer and Power Washer Problems, Ryobi 2000 PSI 1.2 GPM Electric Pressure Washer, Sun Joe SPX3000 Electric Pressure Washer Review, Unkink garden hose, ensure full water pressure coming from tap, use large enough diameter garden hose (see manual), Remove garden hose connection and remove debris, Adjust unloader screw, check for damaged seals/springs, Disassemble pump and replace/clean components of inlet manifold, Turn off machine (but not water supply) and release pressure by squeezing trigger gun, Obstructed nozzle, water inlet filter or gun/spray wand, Use needle to clear nozzle, fresh water to flush water inlet and vinegar to clear any deposits in gun/wand, Adjust unloader to proper pressure as per manual, Tighten bolts to ensure pump casing properly sealed together, Wait 5 minutes before using (it will de-activate once cool enough), Squeeze trigger gun to release pressure in system, Adjust RPM to engine specs with pump detached, Worn or broken pistons allowing water through, Check voltage is within motor specified range, Soap tube inlet filter clogged (hose end that sits in soap bottle), Soap inlet valve is clogged or blocked (pump side of tube), Remove hose and use small Allen key to push through hole to remove debris/unstick the ball valve, Worn or broken unloader valve seals, springs or other components, Remove and install correctly, properly seating the valve at the bottom of the pump housing, Replace worn or broken seals and re-install unloader valve to specification, Disassemble and check (if possible) and add oil, otherwise return under warranty, If comfortable disassemble to check, clean and replace, otherwise return under warranty. If you have an additional one, use that one and see if there is a difference. The unloader on the right is from an AR Blue Clean electric pressure washer. Reading300+ emails from pressure washer users asking for help to solve their machines issues and counting the occurrences of each fault in an Excel spreadsheet. FIG. Check engine oil level. Simpson Cleaning are some of the most popular residential gas machines because they offer great value for money and their pressure washers wheelbarrow stance is sturdy and much easier to move around compared to the common upright designs.
A paper air filter needs to be replaced. The main function of the unloader valve is to divert the water flow from the pump towards the bypass. As a result, your pressure washer runs with very low pressure. Another reason for the missing pressure in your pressure washer can be pump damage. Every tool set needs sockets & ratchet and wrenches despite them doing the same thing. The spray gun/wand is a powerful cleaning tool that could look like a toy to a child. Fill tank to 12.7 mm below bottom of filler neck to provide space for fuel expansion. Remove the air filter and check it. You will 100% want to have silicone grease when you reinstall o-rings,and WD-40, thread tape and grease cleaner will be useful, no doubt. 34 35 Incorrect oil used. For pulsating low pressure, check the pump for any visible damage. There can be many reasons behind this problem, and you can diagnose them by following the steps below mentioned. High pressure pump I A C B Engine Refer to the engine instruction manual for location and operation of other engine controls.
The first thing you need to do is replace the gas since old gas may be the problem.
Pump The manufacturer recommends using a pump guard product when storing the unit for more than 30 days and/or when freezing temperatures are expected. Nozzle obstructed. If your pressure washer produces high and low pressure, then your motor is fine. A:Replace the pressure washer spray gun with a new one. The pump brands they use are two in-house brands: OEM Technologies (axial cam) and AAA Pumps (triplex). The pressure may also suddenly change from low to high. We recommend you take it to a pressure washer repair centre to get fixed. Reconnect spray wand to gun then turn on water supply. When running really hot, it can lead to a worn pump. In general, a damaged pump, engine problem, and motor malfunction are the most common reasons behind your pressure washer having no pressure. After that, remove the spray tip and clean off any debris that may be clogging the system. Chemical injection system: Mixes cleaners or cleaning solvents with water to improve cleaning effectiveness. They are great help to troubleshoot faults because they make quick work removing the detergent hose and help wedge under tight fitting components to loosen them. (Guide 2020), Best AR Blue Clean Pressure Washer Reviews 2020, Best 1800 PSI Pressure Washer Reviews 2020, How To Run A Pressure Washer Off A Water Tank: Definitive Guide 2020, How To Winterize A Pressure Washer With Antifreeze (Quick Guide 2020), How Long After Power Washing Can You Paint A Deck? Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. AUST 1800 841 749 NZ 0800 467 813 www.dewaltpw. He has also worked as a commercial pressure washer at a rendering plant for 3 years and has been using commercial and residential pressure washers for 15+ years. So, without any further introduction, lets get started with our DeWalt 3400 psi pressure washer manual. They also use CAT Pumps brand on some of their premium residential and commercial machines. 
2. Please refresh and try again. To lower the pressure, follow these instructions. Reconnect water source to pump inlet and turn on water source. In a well-ventilated outdoor area, add fresh, high-quality, unleaded gasoline with a pump octane rating of 86 or higher. A:Shut off the engine; purge air from the pump; remove the orifice from the adjustable nozzle or remove the spray tip from the nozzle extension; clean the orifice or spray tip using the wire tool from the maintenance kit.
NOTICE: DO NOT attempt to increase pump pressure. In order to diagnose the reason behind this low water pressure, first, you need to check for any air leakage. My pressure washer troubleshooting experience told me it wasair in the pump causing the problem. See which pressure washer was awarded customer favorite and best seller! If there was no unloader valve then pressure would build inside the system (when not in use) so when you did pull the trigger it would stall the engine or explode a weak link part probably the pressure hose o-ring. Water enters at the bottom and by the time it reaches the top having circulated through all the coil around the flame exits at the top as hot water. English SAVE THESE INSTRUCTIONS WARNING: Do not operate this unit until you read this instruction manual and the engine instruction manual for safety, operation and maintenance instructions. Pressure washers will usually spray out detergent mixed with water. Move the fuel valve lever to the OPEN position. Wipe up spilled fuel before starting the engine. For those machines, you can not replace the oil. There can be many reasons for this problem. Now that we got that out of the way, we can move on to the DeWalt 3400 psi pressure washer troubleshooting guide. Stay alert at all times. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. Knowing the different parts of your machine is extremely important because this knowledge allows you to pinpoint which area might be affected. All my neighbors now know me as the power equipment and pressure washer troubleshooting & tune-up guy. CU: Cleaning Units. Heres the 5 step approach to solving 95% of water pressure issues in 10 minutes or less: Use a needle to clear the nozzle tip of any debris. From there the troubleshooting tips are broken down to 3 columns: Whats wrong, most likely cause and how to fix. Further information: Troy Bilt Support Center. To fix the low pressure of your washer, you should give proper attention to the maintenance of your engine and pump and for gas pressure washers also the engine. See Nozzle Cleaning paragraph in MAINTENANCE section for the correct procedure. 15 16 Choke lever in the CHOKE position. 36 Air filter filled with oil. My snips are sheet-metal snips and cut through tree branches, hoses, and thick plastic or rubber without issue. First time users of pressure washers may have a hard time figuring out how to fix their machine if theyve never handled pressure washer before. 2. Troy Bilt Pressure Washer Owners Manual, Introducing The Dewalt 3400 PSI Pressure Washer, DeWalt 3400 PSI Pressure Washer Manual (Troubleshooting Guide), How Much Water Does A Pressure Washer Use Per Minute? Also, remove dust and debris from the inside of the inlet filter. Sometimes, the nozzle becomes worn and this results in a unusual spraying pattern of water. However, you also need wrenches, especially the open-end side to get to bolts from the side when the top isnt in reach.
They have an OEM overseas to manufacture their pumps and engines then assemble them back in their factories in the USA. We did this all the time at a job I had as a 19 year old using a pressure washerto clean a factory parking lot and truck scale every-single-morning. These warranties pass through to the end user and are non-transferable. Also, check the inline filter because with time, dirt and debris gather inside the inline filter, and they increase to a significant level after a couple of washings. Get your outdoor cleaning projects back on track in no time with this Q&A approach to, Still having pressure washer problems? You can fix this problem by replacing the nozzle of your pressure washer. Choke control: Opens and closes carburetor choke valve. So when the oil is dirty, it needs to be replaced. A pressure washer works so well cleaning the exterior of your house because it uses much higher pressure than a regular hose. Become familiar with the operation and controls of the pressure washer. You ever helped a neighbor fix something? DeWalt 3400 PSI pressure washers are quite hard to operate if youre not used to handling pressure washers. If replacing the nozzle did not make a difference, we have to check the unloader valve. The further away you are, the less the pressure will be on the surface to be cleaned. Keep operating area clear of all persons, pets and obstacles. There are other specific parts that the pressure washer may have, but these are the most important ones to take note of. The Troy Bilt sticker is then placed on the power washer for sale. Over inflation of tires could result in serious injury and property damage. The majority of malfunctions of pressure washer could be diagnosed and repaired by the owner without difficulties. However, double check first where the leak is coming from. Refer to Storage for proper storage procedures. Never fill fuel tank when engine is running or hot. Check and clean the inlet filter of your washer regularly. STORAGE Engine ACCESSORIES Consult the engine instruction manual for the manufacturer's recommendations for storage. Unloader valves allow water to run through the pump when you are not holding down the trigger on the pressure gun. Theres no need to go into detail about these accessories. These would require several different wrenches if they didnt have hex head. The filter of your pressure washer can catch a lot of dust particles during cleaning. It was last updated July 11, 2020. Check the hose points for any cracks by giving them a firm shake. If it is, then you need to check if the spray tip is created for spraying out detergent. How To Adjust Pressure Washer Unloader Valve? I use them often when tearing down a pump to fix water pressure issues. 29 30 Oil seals worn. This worn out nozzle can also be the cause of the low pressure because of the holes in it that widen with time. Many times the nozzle of the pressure washer is worn out, which causes low pressure. Find how to fix your Lawnmower issue with our Lawnmower Troubleshooting tool. Check and replace. If it is dirty, the engine will work less optimally, resulting in less or no pressure. Pull trigger on spray gun to relieve any water pressure in hose or spray gun. And pressure washers have some tight spots. Take a look at two different disassembled unloader valve assemblies: The one on the left is from the Stanley gas pressure washer also shown in the above image on the left. A: Move the throttle control to the FAST. Bad gas is gas that has been stored for multiple months. Bring it out the next time you have a problem with your DeWalt 3400 psi pressure washer. Choke lever in the CHOKE position on a hot engine or an engine that has been exposed to thermal heat for a long period of time. English Your pressure washer operates at fluid pressures and velocities high enough to penetrate human and animal flesh which could result in amputation or other serious injury. FIG. Pressure builds up after two pulls on the recoil starter or after initial use. Do not aim spray directly at the joint between the tire and rim. Hot water pressure washers can suffer 3 faults: Theres 15 or so reasons why you may experience these faults and the same number of fixes. To reduce the risk of injury, close supervision is necessary when a product is used near children.
You really cant beat the price, and it has everything you need. Check and replace. If the washers pressure is still low with a inch diameter hose, check for any blockage in the hose. To decrease the risk of having major issues, take a look at the7 best for home use these are the best designed and least likely to fail. This can be due to a hose problem, leakage, or blockage.
In an electric pressure washer, the electric motor is the source that powers the pump works that generate the high water pressure. Turn water source off. While troubleshooting pressure cleaners they are used to free stubborn parts like the pump head valve plate. Have parts cleaned or replaced by Authorized Service Center. Q: Is the supply water pressure and flow rate adequate? It is a pressure actuated unloader. You need to make sure that the shut off valve is in the right position. If the sparkplug looks ok, but the engine does not run well, the carburetor could be the reason. Electric machines plastic covers which hide the pump and motor are held together with Philips head screws. However, there are some simple fixes. Water filter screen clogged. Reassemble the nozzle to the wand. Nozzles will wear over time with regular use, and will need to be replaced. And nearly exact replicas of the modern hammer have been found and dated to around 5,000 BC. If damaged, remove old O-ring with a small flathead screwdriver, and replace with new one. PressureWashr is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Reactive force of spray will cause gun/wand to kickback, and could cause the operator to slip or fall or misdirect the spray. The table includes the most common faults and repair methods. Did you know hammers are the oldest known hand tool? 6. Vent plug is clogged. First, we will discuss each element one by one and then the components that you need to check to diagnose the cause of low pressure.