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.