SOURCE: Karcher Pressure washer surging/pulsing
here is a troubleshooting link for Karcher products
http://www.the-power-washer-advisor.com/electric-pressure-washer-troubleshooting.html
SOURCE: Cant change the high pressure hose on a Karcher
On the Kärcher, you have a bayonet mount at the base of the tip end of the pistol grip. This is where you attach different types of nozzles and gadgets after having removed the existing sprayer tube. Just push in and turn a quarter of a turn, then you pull it off the pistol grip. The hose is possible to remove from the machine as well, an ordinary threaded mount but since you need the pistol grip to regulate on/off this is probably not what you want to do. If the telescopic wand is made by Kärcher it should be very easy to snap it into place just like when you removed the sprayer tube/nozzle. If the attachment was made to fit Alto washers there is an inexpensive adapter that works very well. Good luck!
SOURCE: Unloader Valve - Karcher Pressure Washer
where is the unloader valve locaed on a Briggs Stratton pressure washer?
SOURCE: I have karcher 620m pressure
Try this. While pushing the trigger of the gun, turn lance fully anticlockwise and then turn back fully clockwise.
SOURCE: Karcher dirtblaster does not oscerlate the water.
Stripped down the head of the dirt blaster by unscrewing the shaft from the end nozzle(it was quite tight). Removed the white disc from the nozzle using pliers and then cleaned out the 4 holes in the disc. Under the disc is an assembly which houses a ball bearing. I noticed that the ball bearing did not protude beyond the recess which houses it. I PUT TWO SMALL FIBRE WASHERS IN THE RECESS THEN REPLACED THE BALL BEARING. THEN REPLACED THE WHITE DICSC. Noting that the ball bearing protrude by approx 1/16th of an inch.
Re-assembled and the dirt blaster now works perfectly
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