In hindsight, in experience or lack of knowledge tells you that u can do pressure washing with a small machine, and in theory you can, but the difference in performance is a lot and the difference in price in not much to push up from 13-16 up to 21 lpm.
How much would you be prepared to pay for a machine giving 13 lpm.
I wouldn't want to pay more than £500 personally
Now don't get me wrong am not telling u wots wot as I have not used a 13 lpm before.
But I do know that if you have a bar with 2 jets on the very most u will get out of each jet is 6.5 lpm, which is what I can pee after drinking tea all day 😄😄
Used honda gx390 21 lpm - about a grand give it take 50p,
Brand new with warranty gx390 21 lpm - about £1500 give it take 50p
We all want to save as much as pos but for the sake of a third of the price u mays well buy new.
Warranty = ££££ saved.
IMO