Here is the one that I have:
http://www.karcher-usa.com/showproducts.php?op=view_prod&param1=232&param2=&param3=

when i turn the water hose on water comes out from the trigger area and it won’t stop. i made sure that there is a washer where the hose plugs into the unit also.

YOU HAVE A SEAL/RUBBER WASHER THT IS Terrible

I bought a HDS 500 pressure washer that I believe burns diesel. I plug it in and the motor that pumps the water seems to blast at the first pull of the handle then slows alittle and I dont know how the igniter works to light the diesel, its 110 volt, I cant find anyone who works on these in my area. Springfield Missouri, anyone HELP!

Karcher is a excellent name brand. Go online to their website and on the contact us tell them what you need. Many that I have seen run on propane, but if you reckon it suns on diesel, then you would be better off getting Kerosene. It burns a lot cleaner. My neighbor cleans professionally and he has a huge propane tank in the back of his truck that he uses to heat the water. I worked for a propane company and the ones we had run on propane too. If you have a tank on it though and are having problems with it igniting then I would change to kerosene. I write to many companies and I don’t have distress getting help from them or manuals.

It is hard to say, Sears buys from so many different companies who place their name on the product.

No problem as long as you protect them with a spray on oil before you use it again

i checked the briggs and stratton main website but i didnt find any thing any other thoughts

on the engine look at the base area look for a pipe plug or a knob
[thumb screw] or a square type plug unscrew it drain the oil replace and refill
the pump does not need oil it is lubricated by the water