I have a Craftsmen 1800 PSI Electric Pressure Washer, Model 580.752020 and it keeps tripping.

Several sold in the last two years are not available now.

Might be able to offer to purchase a copy of the manual only from a seller of the the power washer.

https://www.granstore.xyz/pressure-washers-c-1_2_970_978/hyper-tough-1800-psi-electric-pressure-washer-model-5100219-new-p-6931.htm?language=en

Does the electric motor keep running? If it does continue to run with the trigger in the spraying position, then your pressure switch and motor are OK. If the motor is running and the water is not coming out with pressure, then either your check valves are not closing properly or the pumping mechanism is in need of repair. I think those little electrics have a simple wobble plate design. Basically not worth the effort to fix them

For the Campbell Hausfeld 1800 PSI model (PW182500AV), the garden hose connects to the pump inlet on the lower back of the pressure washer. The high pressure hose connects to the high pressure outlet on the lower front of the pressure washer. Here is the operator's manual that will show both connections. http://www.mowersatjacks.com/images/campbell-hausfeld/manuals/pw1825.pdf

when it cuts out check for spark the coil might be bad

you will have to take the cover off & look for melted wires or a fuse.
if there is no fuse the capacitor may have been cooked.
it should be a white cylinder.if it has been damaged it will have burn marks and may be swollen.
replace the capacitor and it should start.

Try at eReplacementParts.com : Power Tool Parts and Tool Repair Diagrams.

If you need more help come back.Post / thumbs / testimonial are welcome!

general mdse...hardware stores

Maybe just the pressure switch is stuck or you have trapped pressure in the lance. Try without the high pressure hose and then activate the pressure switch on the side of the pump as this may not be letting the machine to statr if its stuck.

If you have used an extension cord with it you have destroyed the motor. If not, the bypass valve is stuck. On THIS diagram, section 2.1, part number 1 needs lubrication with a good waterproof grease.

I have owned four of those units. Every one of them did what you are experiencing or just wouldn't give me any pressure after only a few uses. The company was certainly no help. I gave up after four and bought a heavier gas model from Lowes. Hope this info helps.