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Our Frequently Asked Questions (FAQs) come straight from our customer service department and the customers they serve. We have answers to general questions, such as 'how do I do a return' or 'how late do you ship out each day'. We also have answers to questions for specific parts. Take a look here first to save some time!


How to Create an Account to be Able to Purchase Product Off of The ROP Shop Website What information do I need off of my product to ensure a part will fit properly?

We HIGHLY recommend cross-referencing with your OEM part number for most replacement parts. This is especially true for engine or electrical parts. If you can’t find it in your parts manual or on the part itself then please feel free to contact us directly and we’ll be happy to help. When applicable, please include the following information in your message:

  1. Model and/or Sub-model
  2. Spec and/or Type Number
  3. Code and/or Serial Number
  4. Year
  5. Engine Horsepower

There may be some instances where we aren’t able to find your part number either. In those cases, we recommend contacting a local dealer of the brand of your unit. But please keep in mind that most parts can’t be returned once they’ve been used. If they are the incorrect replacement for your unit, they aren’t eligible for the warranty, so if you aren’t sure please let us know. We’ll do our best to help!

I’m tax exempt, how do I order without being charged sales tax?

We just need a copy of your tax exemption form. Once we have that on file, we can refund the tax on an existing order or take away the tax on an order you still need to place.

In order to start the process, please contact us by emailing your information and tax exemption form to:

How do I add 'Tax Exempt' status to my orders?

OPTION 1: If you have already been charged tax on a current order, please contact our customer support team at to set up tax-exempt status and to get a refund for the tax you were charged.

OPTION 2: If you have not already placed an order, follow this link to our Tax Exempt page. There you will need to fill out the form and upload a copy of your tax exemption form for us to place on file. We will quickly add the exempt status to your active account for you to begin ordering. This can take up to 1 full business day to process. If you have any problems or questions, please contact one of the members of our customer support team at



Are gaskets included with the carburetors?

Only if gaskets are shown in the listing pictures. We do not carry Golf Cart Carburetors. If a gasket is not included, contact us and we will be happy to see if we carry the gasket you need.

Will your carburetor tools work for my carburetor?

With carburetor tools, we are not able to confirm what tools will work for specific models/manufacturers. We can only say that the tool will work for the specific ‘style’ carburetor. If you have any further questions, contact us, and we will help you however we can.


The clutch cross-references with my OEM part number, but the pulley is on the wrong side.

You can remove the spacer that’s in the shaft and put it on the other side. It’s a tight fit, mainly to keep the vibrations from shaking it out, so you’ll need a little bit of elbow grease to get it out and put it back in.

Please note: We would NOT recommend using a spacer that is handmade or that came off of a different machine. This would void the warranty. If you have any further questions, contact us, and we will help you out.

How do I know if my lawnmower solenoid is bad?

To begin, place the ignition key to "On". On the solenoid, look for the wide terminal posts where the thick red wires connect to the solenoid. At the same time, place the metal shaft of a screwdriver on each of the big terminals. The solenoid is bad and can be replaced if the engine turns over and starts up. You shop our selection of replacement solenoid parts in our shop section.

How often do you change spark plugs in lawn mower?

It is recommended that spark plugs be changed every 50 hours, at the most, on most small engines. You can refer to our shop section to see if we carry your type of replacement spark plugs.

How do you test a lawnmower starter?

To test the starting ignition switch, connect one end of a jumper wire to the battery's positive terminal and the other end to the small lug on the engine starter solenoid labeled S. The starter ignition switch is bad and has to be changed out if the motor turns over and starts. Visit our shop section to check for your replacement starter from our inventory.

Why does my lawn mower only run for a few seconds then dies?

It may be caused by a variety of things. It is best to repair the more affordable and easy parts first. Faulty parts that cause this kind of problem include a dirty carburetor, a faulty spark plug, a lack of gas supply to the engine, or a clogged air filter. However, if the lawnmower starts and then ceases running, the causes may be the same. A carburetor failure is the most common explanation why a lawnmower starts and then fails. Visit our shop section to check for your replacement lawn mower parts from our inventory.

How often should you sharpen mower blades?

A mower blade should be sharpened every 20 to 25 hours of use, on average. Depending on how much you mow and how long it takes, these can vary slightly. If at some point it is better to replace the mower blade, visit our shop section to check for your replacement lawn mower parts from our inventory.

Is it OK to tip a lawn mower on its side?

The carb and air filter should be faced up to best prevent leakage. The oil will flow from the cap if you tip it back with the spark plug face forward. When you turn the mower over to its side, the oil crankcase/oil dipstick/oil cap should be on the downward side.

How often should you change the oil in a push mower?

Taking good care of your lawnmower will guarantee that it operates well for several years. One part of lawnmower upkeep that is often ignored is how often the oil should be changed. Engine oil and oil filters should be changed at least once a year, or after 50 hours of service, whichever comes first.

How do you service a lawn mower?
  1. Replace the oil in your engine.
  2. If the mower will not be used for longer than 30 days, add a fuel stabilizer to the fuel system or drain all fuel from the mower.
  3. Remove the spark plug and install new ones.
  4. Clean and replace the air filter.
  5. Sharpen the blades on your lawnmower.
  6. The lawnmower blades must be aligned.
  7. Keep the mower in decent working condition.

Visit our shop section to check for your replacement lawn mower parts from our inventory.

What is included in a lawn mower tune up?

The air filter, spark plug, and oil are the three primary components of any mower tune-up, and they all need to be replaced. Parts and materials for this project can be found by visiting our shop section to check for your replacement lawn mower parts from our inventory. Begin by replacing the oil. Heat up the oil by running the engine for a few minutes to let it drain more easily.

Should I run my lawn mower out of gas for winter?

Over the winter, unused gas in a mower will become stale, clogging the carburetor and inviting rust. To run the fuel stabilizer through the machine, first, add it to the current tank of gas and then drive the mower. Switch off the mower and let the engine cool before siphoning the excess gas into a clean can.

How long does fuel stabilizer last?

The stabilizer will extend the shelf life of gasoline by one to three years, depending on the product. Stabilizers perform well when combined with new gasoline; they're useless at slowing down the oxidation of old fuel and can't restore the functionality of old gas.

Should you run the gas out of your lawn mower?

Although running a fuel tank dry may seem to be a smart move, it may cause damage to the engine. When it is time to pull a lawnmower out of storage, running it dry will make it more difficult for it to start right up. This applies to all of your outside tools and appliances, from lawnmowers and blowers to trimmers and chainsaws. This is why running a stabilizer through it and simply siphoning the gas is a better option.


How do I know if my pressure washer pump is bad?

There are a few troubleshooting steps which can help you figure out whether it's time to find a replacement pump. We've created a step-by-step walkthrough video to make the process easy and painless, which we will be publishing soon!

Are pressure washer pumps interchangeable?

Yes, many models are. However, compatible replacement options do vary depending on your pressure washer engine shaft diameter, engine orientation, original pump bolt pattern, and your engine's horsepower. For more information, check out our detailed guide to finding the correct replacement pump.

Why does my thermal valve look different than the product shown in the picture?

The thermal valve comes already installed in the pump, in the opposite end of the garden hose inlet. If you have any further questions, contact us, and we will help you out.

Do I need a keyway for installation, and do your pumps come with one?

Yes! Our pumps are installed onto the shaft of the engine with a keyway. If a keyway is pictured in the listing, then it will come with one. You may also purchase a keyway from our shop here.

How do I find the best replacement pump for my pressure washer?

We have a detailed guide which includes all the information you'll need to find the perfect replacement. Check out the article and fitment chart here.

If you need any help finding the right pump to fit your needs, please reach out to us at:

How do I know my pressure hose will fit?

The thread that comes on our Himore pumps is a male 22 mm thread, which will not work for certain pressure hoses. If you need a quick-connect fitting or an adapter, you can remove the brass outlet tube to reveal a 3/8" female thread into the pump housing. That thread is much easier to find adapters for if needed. We carry other adapters as well, so if you need help finding one let us know!

Which replacement pump head do I need for my unit?

Our pump heads ONLY fit AR (Annovi Reverberi) brand pumps, we would need the model number that is located on the leg of the pump in order to verify fitment. If you have any further questions, contact us. We will be happy to help you.

I’m not getting pressure, is my pump faulty?

Most likely not. Most pressure issues can be solved with a little bit of trouble-shooting. First and foremost, make sure your keyway is inserted properly. If the pump is making a metal-on-metal grinding noise and giving no pressure then that is most likely the problem. This can cause internal damage so make sure you fix it fast!

Check your spray kit! A lot of pressure issues originate somewhere between the pressure hose and the nozzle. Nozzles do wear out so make sure you are replacing worn or broken ones. Obstructions in the gun or wand or even tears in the hose can cause low pressure.

Specific to Himore pumps (at this point in trouble-shooting if it’s an AR pump we recommend contacting AR directly), the unloader valve may be stuck. You can remove the valve by taking out the U-clip and pulling the valve out of the pump. There is a stem that comes out the back and you should be able to push it in and have it spring back out. If it’s stuck then just tap the stem against a hard surface to free it.

(Note: These tips are just for if you are getting NO pressure, they won't do much if you are just not getting enough pressure. For that, you'll need to make adjustments. Contact us, check the insert that came with your pump, or look at the FAQ pertaining to pressure adjustments to find out how to do that.)v

My original pump uses a throttle cable, how do I hook that up to the new on?

Replacement pumps don't come with throttle cables because the pump manufacturer doesn't make them that way. Pumps only come with a throttle cable when the pressure washer manufacturer puts it on themselves, but they aren't necessary for the pump to function. All that does is increase the RPMs on the engine when you squeeze the handle and bring them down when you release it. It's supposed to extend the life of the engine, but you'll only notice a difference if the recommended scheduled maintenance for that engine is kept up with, and even then, it's pretty minimal.

Do I need to change the oil in my pump?

Unless otherwise instructed in the literature provided with the pump, then no. Most of our pumps are sealed units that don’t require oil maintenance. However, some do need oil changes so always check the emailed directions for AR pumps and the slip inserts for Himore pumps.

Why aren’t the mounting holes of the replacement pump sitting flush with the bolt holes of the engine?

Some models used pumps with slightly thicker feet, so the replacements don’t quite reach the same. You can use spacers and longer bolts to fill the gap. Also, if your original had a hole in one of the legs for the oil reservoir the replacement will still work just fine for it, you’ll just need spacers and longer bolts to mount it. The longer bolts will allow it to lift above that reservoir, and the spacers give the legs the support they need so they don’t break from the vibrations of the engine. Most people just use metal washers for spacers.

My engine is stalling. Is the pump bad?

It's most likely your engine is just having issues supporting the PSI. You can adjust the pressure of the pump down by holding the HEX head bolt on the unloader valve, loosening the 10 mm nut, then loosening the 17 mm nut ¼ turn. Tighten the 10 mm nut to hold the larger one in place and check your pressure. If it still stalls, you can repeat this up to two full turns. Beyond that, it’s most likely an engine problem, or you need a pump with a lower max PSI rating.

There’s a spline on my shaft, not a keyway. What pump do I need?

If you have a spline or gear on your shaft then your original pump was a strap-style (or bow tie) pump and they no longer manufacture them that way. You can remove that extra piece to free up the shaft and use your model number to find the correct replacement. You’ll install the replacement directly onto the shaft with a keyway.

Why isn’t my chemical injector working?

You’ll want to make sure you’re using either a low pressure or soap tip. The injector won’t pick up if you’re using a high pressure tip. If you are using the proper tip and it’s still not working then you can remove the brass nozzle and make sure the internal components are in the correct order. Going into the pump it should be spring, then ball, then nozzle.

There’s a gap between the pump and the engine. Won’t that cause a problem?

No. As long as there’s plenty of contact between the shaft of the engine and the pump for the keyway, then a little space there won’t be problem. However, if there is a gap between the engine and the bolt flange, it is important to use spacers to close that gap. It is also important to use the same number of spacers for each bolt when installing the pump.

If you have any further questions, contact us. We will be happy to help you.

How to adjust my Annovi Reverberi Minimatic Unloader SRMW - SRM (AR-AR42118 - 100246) How to adjust my Annovi Reverberi Gymatic Unloader Valve (AR-AR20242 - 100226, AR-AR20400 - 100227, AR-AR22287 - 100233) How to adjust my Annovi Reverberi Minimatic 4-B Unloader (AR-AR21039 - 100228) My pressure washer pump came with a threaded water outlet, but I need a quick-disconnect. Can I install one on this pump?

Yes, most of our pumps can accept a quick-disconnect fitting. Please contact us with your order number so we can give you directions specific to your pump.

Are pressure washer pumps interchangeable?

There are replacement pumps on the market that can be purchased to replace the pump on your pressure washer. These replaceable pumps can be found in our Rugged U blog: "Pressure Power Washer Pumps - All You Need to Know to Find Your Correct Replacement"

How long do pressure washer pumps last?

The majority of low-cost pressure washers use low-quality pumps. Those pumps can be expected to last between 60 and 100 hours of use. The life expectancy of pumps that are in better quality pressure washers can last 300 - 500 hours. Households use their pressure washer for about 50 hours per year on average.

What are the Best Pressure Washer Pumps

You will always want to pick the pump that best fits your unit.

  • Best and Recommended by professional reviewers: AR or Annovi Reverberi Pump
  • Best for Overall: Homelite Vertical Pump

Be sure to visit our replacement pump chart to figure out which one is right for you.

Can you repair a pressure washer pump?

Typically you can replace the whole pump with one of The ROP Shop's replacement pumps, or simply replace the damaged or worn out parts of the pump, with one of the parts on our website. Even after replacing the pump, it will still require regular servicing, including using pumpsaver in the off-season. See our Rugged U blog section for instructions on replacing a pressure washer pump.

Why do pressure washer pumps fail?

Pump cavitation and overheating from too much time in the by-pass are the two most common causes of pressure washer pump failure. Pump cavitation occurs when the pump is not provided with enough water. The supply to your unit must be greater than the pump's gallons per minute rating.

What is the difference between axial and triplex pumps?

Axial cam pumps are direct drive, which means they rotate at the same rate as the motor. They can wear out more quickly than a triplex pump, but they will have a lot of pressure and efficiency. Triplex plunger pumps are the best pressure washer pumps on the market, with a longer lifespan and improved performance.

How often should you change pressure washer pump oil?

Most of our pumps are sealed units that don’t require oil maintenance. However, some do need oil changes so always check the emailed directions for AR pumps and the slip inserts for Himore pumps. If you just bought a new pressure washer, it's a good idea to change the pump oil after 10 hours of use. If you intend to use your pressure washer regularly, you can do scheduled maintenance and change the oil every three months at the very least, but always follow manufacturer recommendations to help keep from voiding any warranty.

Is my pressure washer pump bad?

Low nozzle pressure may be caused by a pump failure. If the pump doesn't build up enough spraying pressure, fix the check valves or purchase one of our replacements to change out the whole pump. Low pressure at the nozzle may also be caused by a jammed unloader valve. If the unloader valve is stuck open and repeatedly recirculates water back to the pump inlet, it should be replaced. Check out our Rugged U blog for more troubleshooting your pressure washer pump.

How do you service a pressure washer pump?

Some pressure washer pumps require oil changes, and some do not, so be sure to check the owners manual to find out for sure. It is most important to treat your pressure washer pump with pump saver before storing away the unit for the season. this is especially vital if there is any chance the pressure washer or pump will be exposed to or near elements like cold or heat. You can pick up The ROP Shop's pump saver on our website.

Why is my pressure washer pump leaking oil?

A cracked or worn-out seal is the most common source of a pressure washer pump leaking oil. The pressure washer comes with a variety of seals to avoid water and oil leaks. A leak can be caused by a minor kink in these seals, particularly after repeated use. See our Pressure Washer category to find your pressure washer replacement seals.

How much oil goes in a pressure washer pump?

First of all, follow all recommendations from the manufacturer. Check your owner's manual to see if your unit requires oil changes. Add non-detergent pump oil into the pump. You don't want to top-off the oil tank. Only fill it about 3/4 full. Replace the fill bolt on the pump and tighten it. Clean up the region with your pressure washer. Do NOT test your pressure washer without water actively moving through the pump.

What is the difference between a power washer and a pressure washer?

The main difference between power washing vs. pressure washing is heat. The jet wash in a power washing machine uses heated water, whereas the water in a pressure washer is not heated. However, these terms tend to be interchangeable to the average consumer. It is not recommended to use heated water with your pressure washer. Using hot water with a unit that is not built for it can cause internal damage and part failure. Please follow your owner's manual instructions to prevent voiding your manufacturer's warranty.

How many PSI Do I need to clean concrete?

In order to effectively clean concrete, use a pressure washer with a rating of at least 3000 psi and a flow rate of at least 4 gallons per minute (gpm). Pumps with lower ratings than this will still clean concrete, but results could be less effective or require multiple cleanings.

How do I adjust the pressure on my pressure washer pump?

You can adjust the pressure on your pressure washer, one way is adjusting the unloader valve. If you are having problems with the pressure levels on your pressure washer, visit our Rugged U troubleshooting blog, "Having Pressure Washer Pump Issues? Start Trouble Shooting Here." for more details.

Why does my power washer keep surging?

When the pressure or water stream is fine and then weakens or pulsates, it's called surging. It happens when the water source can no longer sustain the pump's flow rate. Water flow may be restricted to the pressure washer. Check that all hoses are free of kinks, leaks, or blockage. If the nozzle has even a little bit of dirt in the tip, it may cause enough obstruction for the pressure washer to pulsate. If your pressure washer came with a nozzle cleaner, use it to clean the tip. This could also be a sign that your pressure washer pump may need parts replaced or replacement of the whole pump itself. Please visit our Rugged U troubleshooting blog, "Having Pressure Washer Pump Issues? Start Trouble Shooting Here." for more details.

Why does my pressure washer dies when trigger released?

If a pressure washer stalls when the trigger on the gun is released, this could indicate a problem in the unloader valve. It is a simple process to remove and replace the unloader. Please visit our Rugged U troubleshooting blog, "Having Pressure Washer Pump Issues? Start Trouble Shooting Here." for more details.

Should you pressure wash your house?

Pressure washing your home can be immensely helpful. Pressure washing, when done correctly, will remove grime, bird droppings, and unsightly stains from your home. Mold and mildew, which are detrimental to both your home and your family's wellbeing, are eliminated by pressure washing.

Can you pressure wash an engine?

It is recommended to take great care when pressure washing anything mechanical like an engine. You also want to be sure to not do so when the engine is hot from running. If you wish to pressure wash your engine, follow all safety guidelines in your owner's manual. Reduce the load on the pressure washer to stop water blasting into the electrical parts. If you're having trouble adjusting the pressure, shift the wand away from the engine. Using a spray bottle, remove all of the cleaner and residue from the engine until it is as clear as possible.

Can I put a bigger pump on my pressure washer?

To protect your engine and your new pump from damage or underperformance, be sure to check out our blog "Pressure Power Washer Pumps - All You Need to Know to Find Your Correct Replacement" to see what the proper replacement pump is for your unit. This can sometimes be a stronger pump if it is compatible.

Where are AR pumps made?

AR North America (ARNA) is an independently operated division of Annovi Reverberi (AR), the world's largest manufacturer of pressure washer pumps. AR, based in northern Italy, is a privately owned company since 1958.


How do I figure out what size tire chains/tubes I need?

You would go by the size of the tire you’re purchasing it for. Keep in mind that tire chains are made to fit multiple sizes. As long as your exact size is listed in the title or the listing description tab, our chains will fit. However, if your size is ½” off on any measurement, then our tire chains will not work for that tire.

If you have any further questions, contact us. We will be happy to help you.

My tires aren’t turf tires, will your chains still work?

Unfortunately, no, we don’t recommend using our tire chains on anything other than turf tires. Ag and Industrial tires have deep grooves that our chains tend to get pressed down into, which means they aren’t really doing much at that point. We recommend looking for net or diamond style chains.

How do I know what size tire tube I need?

You can just go by the size of the tire. Keep in mind that our tire tubes are made to fit multiple sizes. There is a size that is stamped into the tire tube, but it’s just a reference size. If it seems like too big of a difference from your tire, let us know and we’ll be happy to double check for you.


Will your blade extensions work on my snow plow?

Pro-wings aren't recommended for Meyer 2 meter, Western 8 1/2", or any brand 9' or 10' plows, except Meyer 9'. They’re also not recommended for polymer plows.

How do I find the right snow shoes for my snow plow?

If you can’t verify with your OEM part number, then you can also check with the shaft length and diameter. Those will need to match your original to fit.

How do I know if these angling cylinder rams will fit my snow plow?

First, we recommend cross-referencing with your OEM part number. If you can’t find that then you can double check with the size of the stroke and the bore of your original. You can find a replacement with those numbers and if they match then they'll fit.

Will your snowplow light kit work for my plow?

Our light kit can be used on any manufacturer brand of plow, but you may need to fabricate brackets to accept the dual studded mounts. Also, you may need to cut the connection ends and hardwire the lights to the plow harness. Unfortunately, we do not have a way to verify what specific snowplows these will work on. The mounting system is universal, it's just the wiring harness connectors you need to check to make sure it will connect to your original. If the connections don't match, you can splice the wires and connect them that way. However, doing so would void the one-year warranty against manufacturer defects.

If you have any further questions, contact us, and we will help you out.


Can I get my order shipped faster?

Sure! Our standard shipping is always free within the lower 48 states, but we’re happy to expedite your item for a nominal fee. Just choose the option you need at checkout and it will tell you how much it will cost.

For more information on our shipping options, please see our Shipping page.

What shipping methods do you use?

We mainly use USPS and UPS, depending on the size of the item. In some cases (e.g. bulk quantities, larger used parts, etc.) we can also ship freight. For international orders, we also use Globegistics.

For more information on shipping, please see our Shipping page.

Where is my order?

If you have any questions or concerns regarding your order, you are always welcome to contact us via the marketplace you purchased from. You’re also welcome to e-mail us at or live chat with us on our website.

If your item shows delivered but you do not have the item, please first check with other members of your household and your neighbors to see if one of them might have accepted the delivery. Then if you are still unable to locate the item, call the postal carrier and give them your tracking number. They should have GPS positioning on all delivery scans, so they will be able to tell exactly where the order was delivered and will be able to help you track down the package. If you need further assistance, please contact us!

My international order has not been delivered yet. Why is there a delay?

Unfortunately, our international shipments may take up to eight weeks for delivery, depending on the region the order is being delivered to, customs, and local postal carriers. If your order does not arrive within eight weeks, please contact us and we would be happy to assist you.

My order is missing pieces. How can I get replacements?

Please contact us! We will need your order number and a picture of the packaging your order arrived in to best assist you.


Turns out I don’t need this part, can I return it?

As long as the part has not been installed, absolutely! If it’s an electrical or engine part that has been installed, then no, we cannot accept it back as a return. Some parts can be sent back after they’ve been installed, but that’s a case by case situation. In some instances, we may not be able to issue a full refund. Please contact us directly with your info and we’ll be happy to see what we can do!

For more information on returns, see our Warranty & Returns page.

How do I make a return?

If you purchased through our website, please follow this link to begin the return process.

If you purchased from our store on Amazon, please use your order history on Amazon to request a return authorization.

If you purchased through our eBay or Walmart store, you may call us at 1-844- My ROP Shop (1-844-697-6774) or email us through or contact us via the marketplace through which you made the purchase. We can then issue a return authorization for your order. We will need your order number and the reason for the return in order to best assist you.

Please note: refunds for orders placed outside of (eBay,, Amazon) are processed and reflected in the marketplace in which it was purchased.


Do you have a warranty?

Yes, we have a 1-year warranty against manufacturer defects on all of our items. For most of our items, we have to verify the correct replacement was purchased for your unit. If you can provide the information of the unit it was installed on when inquiring about the warranty, that will speed up the process. Some of our items are warrantied by the manufacturer, so for those items we’ll provide you with the contact information.

For more warranty related questions, please see our Warranty Information page.

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