Extension cables must always be 13 amp constant rating and no longer than 10 metres. The family-owned company, Kärcher is today the world's leading provider of efficient, resource-conserving cleaning systems. My Karcher pressure washer has developed the common "pulsing" fault, which is normally attributable to one of 4 things:-Input pressure too low from supply [not the case] Dirty/clogged up filter inside input connector [not the case] Split/damaged high pressure hose [could be, mine's got a bad kink in it, but not leaking] G 2600 OR Pressure Washer pdf manual download. Pressure washer troubleshooting in depth ner s how to repair a karcher pressure washer keeps pulsing fixya grumpy gits and useful karcher lost pressure karcher pressure washer spares in didsbury manchester gumtree grumpy gits and useful karcher lost pressure Karcher Pressure Washer Manual 5 4 Co   Mon Pressure Washer Repair Problems Cleaned   Pressure Cannot say enough about this item. I have a Karcher K3.97M 1600psi pressure washer that surges or pulsates when you turn on the switch. Kärcher makes a difference through top performance, innovation and quality. 13 comments on “ “How do I fix my pulsing & leaking Karcher pressure washer?” ” A robertson March 4, 2015 at 8:03 pm. Welcome to the official online help resource for Kärcher Home & Garden products sold in the US and Canada. Do all karcher electric machines have the same cylinder head. Set up is a Karcher PW with a 9.0 HP Robin (Subaru) engine, 3100 psi max. Excellent video -really helpful. It is list as a universal fit but not specific to actual pressure washers, so I took a chance it would fit my Karcher 1750 psi Electric pressure washer and it did! I had gone as far as I could with the 3/4" hose #1 connected to the front hose bib of my house. I shut the washer off, turn off the water, removed the hand sprayer from hose #2 going to the rear of my house and connected that 3/4" hose to the pressure washer. Foam cannon attached via quick connect at the end of the wand, filled to the top with 1 inch of Mr. Do all karcher electric machines have the same cylinder head. We make fixing things easier! Below are several channels of support including how to buy spare parts, locate a service center in your area, download owner’s manuals or contact our customer care team online.You also can find answers to many common issues by typing your question below or clicking the Knowledgebase link.