I’m about to install this k7 on my 8gpm. I searched around Here and YT, think I’ve learned enough to set it up from this video. Will this work ?
[ThoroughClean - Adjusting K7 Bypass Valve Tutorial - YouTube](- YouTube
Yes that’ll do.
Awesome Thanks
Finally got my k7 hooked up. I set it up per video. Question I have is, I adjusted it with the md5 adjustable nozzle it was around 2000psi, then I adjusted it for the white nozzle it went up to around 3400+ or -
So I set it back to the adjustable nozzle what I use 99. % of the time
I love how easy the trigger pull is and how it ramps up slow. I hope it works out. Don’t want to go back.
Can I expect my DS ratio to be the same? Didn’t have time to test it.
That’s normal. You set it with the high pressure tips that came with the machine.
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Great, will do.
Ok I set it to the green tip got 4000psi ???
I thought the pump only made 3500psi
Are these gauges not accurate??
First pic is green tip second M5
Put your m5 in the darn toolbox and don’t pull it out till you’re ready to do a job. It is not for adjusting as previously told you. Adjust your unloader using the green or white tip and leave it alone. I literally have not touched mine in 2 years.
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Washed a house today, night and day, Thanks
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I have the same setup as @316, a GX690 on a 8 GPM 3,500 PSI Udor 3024 on a poly drive, except mine didn’t come with the colored tips. I am trying to set the K7 unloader just like this. A rookie question, do I need the #8.0 green tip or #9.0 green tip to do this? I imagine #8.0 green tip, but then again the nozzle size chart says 8 GPM @ 3,000 PSI is #9.0 tip…
I guess another way to ask this question is, do the size of the high pressure colored tips that come with the machines basically correspond to the GPM of the unit (e.g. #4.0 for 4 GPM, #5.5 for 5.5 GPM, and #8.0 for 8 GPM) or do they go by the nozzle chart taking the PSI of the unit into the consideration?
You want to set your machine with an 8.5 nozzle. Reason being is your machine is a 3500 psi and 8 gpm. An 8.5 nozzle should give you 3500 psi and 7.95 gpm or basically 8 gpm. When setting an unloader you want to use the nozzle that gives you the max specs of the pump.
The colored tips that come with the machine don’t correspond with gpm but rather psi . The larger the orifice the lower the psi. Each colored nozzle should have a number size somewhere on it. You have to look that number up on a nozzle chart and use your specs to figure out how much psi it will put out. I’m sure you already know this but the first two numbers is the degree or fan of the spray.
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I ordered the colored high pressure tips and used them to set my K7 on my 8 gpm, 3k psi. Before I got them I just guessed. My 3k psi pump was pushing 4k psi. If your getting higher psi than your pump is designed your also getting less gpm. Probably not good for the pump either.
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Very interesting. Thanks for the explanation. One more question. Does it matter that the engine is not able to max out on the specs of the pump? For example, it’s been brought out that GX690 is not able to push 8 GPM and 3,500 PSI at the same time, only about 8 GPM @ 3,000 PSI. And, of course there are many that are running 5.5 @ 2,500 or even 2,000 when the pump might be spec’d at 5.5 GPM @ 3,500 PSI.
Based on the quote, I presume I’d still go with the 8.5 nozzle rather than the 9.0 which would be for 8 @ 3,000?
Precisely what I wanted to avoid. Did a lot of search but there was no answer on the forum or on the net, so I decided to ask and I am glad I did!
I imagine having the 8.5 nozzle designed for the max spec of the pump would allow me to either max out on GPM or PSI depending on how I set the unloader…
Go with what your setup can produce. The common formula is gpm x psi / 1100 = HP requirement. 21.8 is 8 gpm at 3000 psi. Honda GX690 = 22.1 horsepower. Set the unloader with an 8 gpm 3000 psi tip.
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I agree with @fhpressurewashing. If your machine isn’t actually producing both the 8 gpm and 3500 psi that’s not the true specs. Go with the nozzle for 8 gpm and 3000 psi. Going with the #8 nozzle will prevent you from giving up gpm to reach max psi.
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