Jenny hot water pressure washer

Just bought an older Jenny hot water machine.
It heats and has pressure but still needs a little work on it.
Purchased it for $250.

Do any of you pros run one of these. I have a few questions I would like to ask you.
Ultra Wash USA

I don’t have a Jenny but I stripped down an older Karcher hds 1200 to every last nut and bolt and restored it. I know it inside and out now including the electrical system. My heater wouldn’t fire at first so had to learn how it all worked. No guarantees but I may be able to help with repair questions if they are a little bit alike.