Hi Guys

Hope your all well and business is good, need some help please, I recently picked up an electric Northstar 1700 psi 1.5gpm pressure washer with heater. I had a few issues with the burner that I fixed but it keeps spitting out grains of rust that are clogging the tips. I have tried running it through but its still doing it so I am thinking maybe an acid wash would help but I am not sure how to feed it into the heater, anyone done this before or can help please?

This is the link to the I washer I have https://www.northerntool.com/shop/to...1855_200321855

Thank you