This is a review of the Simpson model MSH3125-S with the Honda GC190 engine.
The short of it is the unit’s easy to setup and use, starts easy (really, it’s just one pull) and has great cleaning power. The container of engine oil provided with the unit is just the right size, pour it all in the crank case, add gas to the large fuel tank and you’re ready to go. The Honda engine has tons for power and the unit is a blast (pun intended) to use. I’ve already used it to clean my patio, the eaves and house siding. I also purchased a soap lance to use while washing my cars which worked great. My wife was a bit skeptical when I told her I was buying a power washer but after seeing the result with the patio and eaves she’s sold.
Definitely 5 stars, if you want to know why read on…
I shopped around beforehand and looked a multiple brands, size units and features before deciding on this model. Boy, am I glad I did.
If you plan to do any heavy cleaning of decks or prepping a house for painting stay away from the electric units or lower (2000) PSI gas units, you’ll want the 3000+ PSI this size engine puts out.
I would also like to note that I read the reviews for this unit and saw a lot of complaints about poor customer service. I figured I’d take the chance since I was purchasing through Amazon and if there was a problem with the unit when received Amazon is good about accepting returns. When I received my washer the plastic spray wand was broken. The unit had shifted in the box and the front bumper on the unit pushed against the wand cracking it and breaking a chunk out of the handle. I called Simpsons customer service the next day and a nice lady took my name and confirmed the model and serial number on my unit and then shipped me a replacement spray wand. The whole ordeal took about 5 minutes, done.
While trying to decide on a power washer I went to two of the big chain hardware stores and looked at power washers they had on hand. I was looking at the craftsmanship, features and materials the various units were made from.
1) One of the first things that attracted me to this unit was the Honda engine. Honda is well known for their small engine reliability. I love Honda engines; my car, motorcycle, lawn mower are all Honda.
2) All the other high PSI units costing about the same as this unit had plastic bumpers and plastic hose and spray wand mounts. They were pretty colors and looked nice but almost all the display models had their plastic spray wand mounts broken off. Obviously no plastic parts was top of my list. This Simpson unit is all heavy gauge metal that will hold up to abuse.
3) The units with vertical crank shaft engines had the water pump mounted underneath. This made the units taller, less stable, and made it difficult to reach down and connect hoses. This Simpson unit has a horizontal engine shaft with the pump mounted in the rear where it’s easy to get at.
4) Another big plus is that the metal frame on this unit completely surrounds the engine and pump housing protecting them from accidental damage. Units with the pumps on the bottom are susceptible to being damaged when pulling them up stairs or across rough terrain.
5) One unit I looked at had the muffler mounted next to the hose storage and water pump. There were numerous complaints in the review section about melted hoses. This Simpson unit has the hose storage and pump in the back and the muffler up front. The muffler also has a head shield around it. Definitely no problem there.
6) The majority of units I saw had aluminum pump heads. This unit, like the larger more expensive units, has a brass pump head which will hold up much better than the aluminum units. A harder metal means no soft threads to strip and brass, unlike aluminum does not oxidize.
Add to your order
Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
24/7 support when you need it.
Quick, easy, and frustration-free claims.
Cover this product:
3-Year Protection $57.99
2-Year Protection $43.99
Select a plan
Add to your order
Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
24/7 support when you need it.
Quick, easy, and frustration-free claims.
Cover this product:
Select a plan
Enjoy fast, FREE delivery, exclusive deals and award-winning movies & TV shows with Prime
Try Prime
and start saving today with Fast, FREE Delivery
From the brand
-
RESIDENTIAL PRESSURE WASHERS
Whether you want to renew the look of patios and decks, wash your car, or clean sidewalks, SIMPSON’s lineup of equipment can help
-
-
PREMIUM RESIDENTIAL MACHINES
For the DIY-er that needs more out of a residential pressure washer, our premium machines are ready to take on tough home projects.
-
-
COMMERCIAL PRESSURE WASHERS
Our commercial pressure washers are perfect for professionals who take on jobs a bit larger than the ones found around the house.
-
-
PRESSURE WASHER TRAILERS
With up to 200 liters capacity, these pressure washing trailers give contractors and pros the ability to have powerful cleanup anywhere
-
-
The SIMPSON Advantage
Driven by Performance for more than 50 years, SIMPSON continues to provide the advantage you need to get the job done right every time. We design, engineer and manufacture products that are reliable, durable, and built to perform every time you need them. Whether you are a DIYer or an industry pro, SIMPSON offers an enhanced experience with professional results guaranteed.
Join the historic journey and take the ADVANTAGE!
From the manufacturer
With over 60 years of industry-leading experience built into each of our products, it is easy to see why backyard heroes and job site champions everywhere prefer the SIMPSON Advantage.
- 60 years of innovation and technology breakthroughs
- Solutions for every shopper, from DIY to large industry
- Accessories to expand the uses
- Replacement parts to extend the life of your machines
MSH3125 MegaShot Gas Pressure Washer Powered by Honda
The SIMPSON MegaShot Series is perfect for the “Do-it-Yourselfer” looking for maximum performance with minimal investment. Simple to use and great for cleaning decks, patios, outdoor furniture, house siding, and prepping home exteriors for painting. Its compact design is lightweight and small enough to be easily transported by one person. Equipped with a premium HONDA engine built with high-quality components, designed for optimum performance and renowned for being easy to start.
- Maintenance-free OEM Technologies axial cam pump
- Welded steel construction frame.
- Pump/Hose Connection: Threaded M22 connection
- 5 Quick connect nozzle tips: 0°, 15°, 25°, 40° and soap
|
|
|
|
|
|---|---|---|---|
Powered by HONDAHONDA GC190 premium residential engine is easy to start and operate |
3200 PSI at 2.5 GPMThe OEM Technologies pump features a maintenance-free crankcase so you never have to change the oil. It is manufactured from fully anodized die-cast aluminum for durability. |
Convenient hose storage to ensure durabilityMorFlex ¼-in. x 25-ft. the high-pressure hose is non-marring, flexible and abrasion-resistant |
10'' Premium pneumatic wheelsWith 10 in. Premium pneumatic tires, the MSH3125 easily goes where you need it for any residential cleaning need |
|
|
|
|
|
|---|---|---|---|
Clean garage doors, fences, and walls |
Renew steps and sidewalks |
Specifications
|
Shop Amazon for Genuine Simpson ProductsAlways make sure the product says these two things to get the highest quality Simpson products on Amazon:
|
|
|
|
|
|
|
|---|---|---|---|---|---|
| MegaShot | PowerShot | Aluminum Series | Clean Machine | Water Blaster | |
| PSI | 3200 | 3300 | 3600 | 3400 | 4200 |
| GPM | 2.5 | 2.5 | 2.5 | 2.5 | 4.0 |
| Pneumatic Tires | ✓ | ✓ | ✓ | ✓ | ✓ |
| Accessory Bundle Options | ✓ | ✓ | ✓ | ||
| Engine | Honda | Honda | Honda | CRX | Honda |
| Best for | Residential Use | Commercial Use | Commercial Use | Residential Use | Commercial Use |
Featured items you may like
Page 1 of 1 Start overPage 1 of 1
Compare with similar items
I purchased this MSH3125 MegaShot Gas Pressure Washer because I needed a washer that can reach the second level of my house from the ground. The pressure washer arrived on time and in excellent condition (clean and undamaged). The unit was packed well with pillows made of expandable foam that filled the box interior… well done! I didn’t use the included 10W30 oil. Instead, I used MaxxOil Pro-Max full synthetic 10W30 oil in the Honda engine, because I use it in my Honda lawn mower and snow blower and really like it for small engines (it has a VERY good high temp performance).I have read many reviews where people had excessive vibrations that would literally shake the pressure washer apart. So I also ordered a Briggs & Stratton 195294GS Engine Mounting Hardware Kit. This engine mounting kit is a nice vibration isolation mounting kit. I only had to slightly open the mounting holes with a 25/64” (0.39”) drill bit to get the isolator mount studs to fit. It was simple to do and now my pressure washer has rubber isolation between the engine/pump and frame like many of the other pressure washers in this class. Much of the excessive vibrations are now gone.There are also several reviews where people say the oil drain on the engine is too close to the frame and that makes it difficult and a mess when draining the oil. The frame engine mounting plate has an opening below the drain plug on the unit I received, making the oil change fairly easy to do.I have only run this pressure washer for about 20 minutes washing 2 cars. It performed very well. The only thing that needs to be pointed out to someone new to operating gas pressure washers is that the high-temp/pressure relief valve on the pump will expel very hot water if the pump/engine is left idling for periods of time. My 30 year old son learned that the painful way while he was standing near the washer when it expelled hot water onto his leg. Even though we feed the pump cool tap water, it will continue to gather heat when being continuously cycled thru the high pressure pump… a squeeze of the trigger on the wand occasionally will keep the relief valve from “relieving” because of the cool water entering the pump.I am giving it 4 stars because it doesn’t come with the isolation engine mounts like many of the other pressure washers in this class.EDIT 7/11/2019: I used the pressure washer for 5 tank-fulls of gas yesterday (all day) without it overheating or any other issues while cleaning the front of my house, driveway and stripping the 15 year old mildew stains from my wooden porch. This pressure washer has met or exceeded all of my expectations. My porch was in such rough shape with mildew stains that I was dreading the expense to replace it. 3200 psi and a few tanks of gas and the porch now looks new again! The washer has already paid for itself 3x over in just the first few days of owning it!EDIT 1/23/2020: Since my last edit on July 11, 2019 I have run this pressure washer to restore a 20 year old cedar fence, washed three porches, washed two houses and used weekly washing our vehicles. The cedar fence took me two full weeks of running the pressure washer 6-8 hours a day. So, I estimate that I have over over 100 hours on the pump and engine now. I winterized the pump by filling the pump with the more expensive pink RV antifreeze (Absolute Zero) which is good to -100 degF. I have changed the oil in the Honda engine twice and I will change it again this spring when I get it ready for another season of cleaning. I only wish that the pump was able to have its oil changed, because that pump really works very hard and fresh oil is NEVER a bad thing to do.
Images in this review
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
Reviewed in the United States on June 11, 2016
Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Reviewed in the United States on June 12, 2023
Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Reviewed in the United States on July 31, 2023
Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Reviewed in the United States on April 17, 2023
Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Reviewed in the United States on July 10, 2023
Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Top reviews from other countries
Chunky lover
What's not to love?
Reviewed in Canada on July 8, 2023Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
DW
Present Day Residential Honda Small Engines
Reviewed in Canada on July 14, 2015Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Jason B.
Great machine.
Reviewed in Canada on May 16, 2019Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Jon C.
After reading countless bad reviews, I still went ahead and purchased this ...
Reviewed in Canada on May 6, 2018Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
Greg M
Started leaking after only one season of use. Difficult to find a local service agent
Reviewed in Canada on August 5, 2019Style: 3200 PSI Pressure WasherPattern Name: WasherVerified Purchase
