I recently bought a North Star Washer, 3200 psi with a 9 Hp Honda Engine and a Cat Pump. The manual that came with it is very incomplete in explaining the use of the machine. I have used it for some small jobs it seems very well made. I have some questions though. I want to wash my deck with a deck cleaning solution, mine is an oxalate solution. The bottle has several dilutions it recommends but says to refer to your users manual. The manual only says what nozzle to use and to put the siphon hose in the solution. I take that to mean undiluted solution but am not sure. The injector appears to be after the qwater passes through the pump so I am not to worried about damaging the pump itself.
There is also on the top of the pump a "pressure adjustment knob". The manual makes no mention of how this is used. Do any of you North Star owners have advice.
I asked if there was a better manual somwhere and the customer service rep while very nice said wysiwyg.