Generac 5997 4,000 PSI 4.0 GPM 420cc OHV Gas Powered Commercial Pressure Washer (Discontinued by Manufacturer)
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- Commercial-grade power washer with 4,000 PSI and 4.0 gallon per minute (GPM)
- Powerful Generac 420cc OHV engine with low oil shutdown and integrated unloader valve for easy engine startup
- Professional-grade spray gun with an adjustable side handle
- Professional-grade triplex pumps with ceramic-coated pistons are designed for long life
- Non-CARB Compliant/Not For Sale In California
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|Item Dimensions||32 x 28 x 28 inches|
|Item Weight||165 pounds|
|Manufacturer Part Number||5997|
|Manufacturer Warranty Description||3 Year limited warranty|
|Shipping Weight||166 pounds|
Power wash your deck, prep for painting, remove tough concrete stains and more with this powerful pressure washer from Generac. Long been known for their quality engines, this model is no exception, equipped with a powerful 420cc Generac OHV engine. Also included are five Quick-Click nozzle tips (0-degree Blast, 15-degree Strip, 25-degree Clean, 40-degree Wash, Soap), and a 50 foot hose. Generac's power washers are carefully engineered for longevity and ease of use, with well thought-out features not found on competitive models. Easy to maneuver, the welded frame is designed for durability, with a built-in step for easy starting and an integrated gun holster. The easily accessible high-performance axial cam pump provides maximum heat dissipation for extended life and the easy to pull trigger reduces fatigue. The pump is located well above the ground, eliminating the need to kneel down to make hose connections. Backed with a 3 year limited warranty. Founded in 1959, Generac has earned a reputation as the company home and business owners turn to when the power goes out. The first to engineer affordable home standby generators, along with the first engine developed specifically for the rigors of generator use, Generac now sells more home standby generators than all of our competitors combined. We have brought this same level of commitment and quality to our pressure washer products. Our customer research has led us to engineer our pressure washers from the ground up, to meet your specific demands. Generac manufactures the widest range of power products in the marketplace including portable, RV, residential, commercial and industrial generators. Generac also operates three large factories which employs thousands of workers in the American Midwest.
Long known for its portable generator design, Generac introduces its lineup of commercial-grade pressure washers, enabling you to power wash your deck, prep for painting, remove tough concrete stains, and more at home and on the job site. The Generac 5997 provides 4,000 PSI of power and 4.0 gallons per minute (GPM) for a cleaning power rating of 16000.
It's powered by a Generac overhead valve (OHV) horizontal-shaft engine, the largest available for its respective pressure rating. Generac OHV engines come standard with low-oil shutdown to protect and prolong the life of the engine. Both the engine and pump are perfectly balanced over the axle and wheels for almost effortless maneuverability, regardless of terrain. Generac pro models also offer durable, welded roll-cage style frames that protect both the engine and pump from damage.
It comes with an ergonomically designed professional-grade spray gun, which features a unique cushion grip that reduces fatigue by minimizing vibration. The innovative easy-to-pull spray trigger can be held with a minimum of effort, and the Quick-Click nozzle tips are easy to replace. Additionally, this pressure washer's gun comes with an adjustable side handle for additional comfort and control when cleaning up high, down low, or anywhere in between.
This power washer is backed by a three-year limited warranty.
Note for California residents: This model is not CARB-compliant. Units sold to California must be CARB-compliant.
What Is PSI and GPM?
Short for "pounds per square inch," PSI is a measure of the water pressure coming out of the power washer. A typical garden hose dispenses water at about 30-40 PSI, and a coin-operated car wash provides about 700 PSI. A power washer, by contrast, typically dispenses water at several thousand PSI. Another important factor in power washers is GPM, which stands for "gallons per minute" and describes how much water is flowing through the pressure washer.
Together, they provide your power washer's cleaning power. Multiply PSI (which gives you the power to lift dirt and grime) by GPM (which provides the necessary quantity of water to wash it away) to get the cleaning power rating. The higher the number, the greater the cleaning power.
Here are some application examples with how much cleaning power (PSI and GPM) you'll need to get the job done.
|Compliance||49 State||49 State||49 State||49 State||49 State|
|Cleaning power rating||8400||10560||16000||5750||6210|
|Spray gun||Professional grade||Professional grade||Professional grade||Ergonomic||Ergonomic|
|Hose||3/8-inch x 35-foot steel reinforced, non-marring rubber||3/8-inch x 35-foot steel reinforced, non-marring rubber||3/8-inch x 50-foot steel reinforced, non-marring rubber||1/4-inch x 25-foot PVC/plastic||1/4-inch x 25-foot PVC/plastic|
|Quick-Click Nozzle Tips||(5) 0°, 15°, 25°, 40°, soap||(5) 0°, 15°, 25°, 40°, soap||(5) 0°, 15°, 25°, 40°, soap||(3) 0°, 25°, soap||(4) 0°, 25°, 40°, soap|
|Wheels||10-inch Never Flat||10-inch Never Flat||12-inch pneumatic||Plastic||10-inch solid|
|Dimensions (LxWxH, inches)||25 x 26 x 30||28 x 28 x 33||28 x 28 x 33||17 x 27 x 21||17 x 27 x 21|
|Weight||113 pounds||145 pounds||165 pounds||82 pounds||83 pounds|
Top Customer Reviews
Cons: Generac's quality assurance/control for assembly was poor when they assembled this particular item. There were essentially two errors in the assembly process which required me to troubleshoot outside of the troubleshooting guide (one was minor, but the other was not simple and could have created a major headache). The minor miss was the plastic sleeve on the left of the cart (it serves to hold the nozzle rack as well as the hose support bracket). It was installed upside down and resulted in the hose bracket not fitting into the handle slots as designed. It required quick removal and reinstall (no big deal). The bigger issue was much more troubling. After assembling the washer and following all the easy to read instructions, I could not get any pressure out of the washer that was greater than the pressure supplied by the incoming hose. There is a pressure adjustment knob, but turning it did not make a difference. Following the troubleshooting guide, I checked the faucet pressure (68 psi vs. a minimum requirement of 30 psi), flow (6.5 GPM versus a min of 4.0 GPM), and checked all hoses for kinks (none were found) - nor were the hose, wand or nozzle plugged. The last option, according to the troubleshooting guide, was a faulty pump. I checked the pump oil (filled at the factory) and it was good, but decided to change it out anyway even though the pump oil was clean. I then decided to look at the pressure valve since the pressure would build very slightly if the wand was not activated for 20-30 seconds. Upon removing the adjustment knob cap, the problem became obvious - the 10MM nut that secures the knob to the valve stem was not attached and was wedged between the knob and the stem. Consequently, it was creating just enough friction between the inside wall of the knob and the valve stem to make it feel like the knob was turning the valve, when in fact it wasn't. Also, the valve was factory set at the lowest pressure (which was essentially the pressure of the incoming water). After tightening the nut, and putting the cap back on the knob, the washer worked exactly as it was supposed to. Unfortunately, the troubleshooting guide did not lead me to the root cause. In fact, had I stuck to the troubleshooting guide, it indicated the pump was faulty and I should take it to the nearest dealer. What a hassle that would have been. The unit probably weighs close to 200 lbs and it is not small. I ordered this through Amazon for a reason: to get home delivery! Otherwise I could have gone down to the local big box store and gotten a comparable pressure washer in the same day. Having to find a way to haul it to the dealer for repair woud have been a real challenge in and of itself - not to mention the added delay before I could use the washer for its intended purpose. This is not a typical 'defect,' but it is indicative of bad process control at the assembly plant. It certainly isn't something that would come apart in shipping. For someone who is not mechanically inclined, this could have been a big and aggravating issue.
Tip: when you start the engine, make sure the valve is turned fully counterclockwise (lowest pressure setting) and trigger the wand between pulls. If you do this, you're won't be working against the pump when you pull the recoil start rope - saving your arm and shoulder a lot of agony. If you follow the starting instructions for choke and throttle, you shouldn't have to pull the recoil rope more than a could of times to get it to start.
Summary: the washer is a good and robust design and performs well. The cart and storage features are excellent and it is very mobile. The only criticism I have is on Generac's in-process quality control. As I am making this criticism on only one data point, it may be unfair since I don't know what their defect rate actually is; however, to have two careless assembly misses on one item leads me to believe that they need to improve their process if they want to compete with other name brand units. An item that costs about $1000 needs to work right out of the box. This unit fell short.
Now after 2+ uses, my "window" to return the unit expired yesterday and I am now stuck dealing with a 150# + power washer I have to bring to a service center?????
Does not seem to be a good customer service position to put the burden on me for a new $1,000 power washer.
Good Unit (when it worked) Bad EXPERIENCE overall.
I would strongly suggest that you but this from a center where you can see the device run prior to taking it home and can return it to the place of purchase if there is a problem!
Mine never started with choke on. What I found works is to first engage the choke lever, modestly pull ~5 times to prime it (it won't start at this time anyway, why sweat it), then turn off choke and give it a hard pull. Starts every time. I wish it had a chuck for using an electric drill to start it (like those on craftsman's garden tools).