Question about FAIP Vertical Shaft Pump MTPV90480

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HOW DO i ADJUST THE UNLOADER ON MY faip MTPV90480 PRESSURE WASHER PUMP?

CRAFTSMAN 2400 PSI PRESSURE WASHER

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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brado83
  • 106 Answers

SOURCE: Where can I get seal rings and o rings for my

Hello,

Alot of people have tried doing this as the genuine o-ring and seal kits are so expensive and sometimes hard to source, but many companies make orings and seals that are unique and cannot be found aftermarket,
If you are lucky you may find some but the only way of doing so would be to take the actual seal and orings down to your local bearing and seal supplier and they will measure it up and do their best to find some for you...

Regards
Brad

Posted on Jan 02, 2010

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SOURCE: Where can I get seal rings and o rings for my

MSC industrial www.mscdirect.com sells metric O-rings by the bag. If you measure what you've got, you can make an educated guess what to replace with.

Posted on Oct 12, 2013

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1 Answer

How to adjust the unloader valve.


With a pressure gauge. If it's a home duty model it can usually be turned all the way in without damaging anything. Try turning it all the way in and fire it up. If the engine/motor doesn't groan or stop, you're probably okay. If the unit stops or slows down when gun is closed, immediately open gun, then shut down. With unit off, back off on unloader setting and set with pressure gauge, or have it done by a professional.

Aug 23, 2014 | Craftsman 3000 PSI 27 GPM Briggs ...

1 Answer

How to set a high pressure unloader valve on a FAIP 1500 H120 washer


Are you talking about the electric switch that shuts off the motor when the trigger is released?
If so, there is an arm that comes out of the high pressure side of the manifold and is connected to a spring loaded piston. The piston extends under high pressure (spray trigger released) and retracts when spraying. At the opposite end of the arm is an allen screw and locknut. The allen screw bears on the microswitch arm to control the electric motor. When properly adjusted, the motor should turn off when the trigger is released. If it doesn't, loosen the locknut and adjust the allen screw slightly outwards toward the switch. Pull the trigger a few times and verify the motor starts up and shuts down when you release it. Tighten locknut.
Hope that helps.

Jul 11, 2014 | FAIP 1500 PSI Electric Power Washer

1 Answer

Do the spring end caps inside the 315747GS unloader valve face the spring or the ends of the valve


This parts diagram for the pump should answer your question http://lawnandgarden.manualsonline.com/manuals/mfg/craftsman/580751651.html?p=22

Jun 08, 2014 | Craftsman 2500 PSI Briggs & Stratton...

1 Answer

Adjust water pump pressure


pressure control valves are non adjustable
They operate to unload the pump when the trigger is released
What can vary pressure is the jet size at the end of the wand
The screw and nut on the valve is only to regulate the stop/start pressure as the trigger is pressed/ released
low pressure at the wand jet can be from low water supply to the pump or pump internal problems

Feb 13, 2018 | Coleman Garden

2 Answers

Power washer not spraying hard


Hi Mike
You could have one are two problems with the pressure washer.
1...pump for pressure washer worn and needs washer/seal replacement.
2...Need to adjust the pressure discharge relief valve to the needed pressure.
Please take time to rate me
Bud

Mar 28, 2013 | FAIP Powerwasher Universal Pressure Washer...

1 Answer

I have a 4,000 psi, 4.5 gpm 45G cat pump powered by a 13 hp honda engine I can not seem to be able to adjust the unloader valve to give me pressure over 950 psi and even at lower pressures, the pump...


I would just purchase a new unloader valve, they usually aren't worth rebuilding. I would like to have a picture of the set up that you have, if you can send me a picture of the unloader region of the pump I can get you are price on a new one. email is justin@wmpcs.com

Oct 22, 2010 | Honda Pressure Washer PSI 3000

1 Answer

After removing the unloader valve and cleaning i


If you have pulsating usually you have at least one of the six check valves stuck open, so you're only running on two cylinders. You might have got some of your plumbers " grease" in the check valve. (Do you mean pipe dope?) three of the check valves shold be accessable from the outside of your pump but the other three are inside. You can get parts for your unit from www.pressure-washer-parts.com


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Jul 19, 2010 | Alfred Karcher K2400HH 5 Hp 2.5 Gpm @ 2400...

1 Answer

Pump on my pressure washer will not pressuerize


there is a loader and unloader valve on your pump bolted to it. if it frozen in the open position it will never build press. most of the time this is caused by leaving cleaning solutions in system after use and let set up for a long period. it causes the aluminum case to corrode.;you will have to dissassemble and clean if not to bad. if not your going to have to replace.

Apr 08, 2009 | Karcher 2500 PSI Pressure Washer

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