Buddy mechanic uses Muriatic acid, a tad aggressive but it sure looks clean.
Clean is good!
Hmm I have some citric acid still I've used for wine making and lantern parts cleaning... Milder perhaps but doable. We'll see after I remove the diesel.
The motor can be run off the onboard it tank , or a portable tank. The portable Dad had with it has about a pound of yuck in it still after I dumped the former fuel. The float for the gauge on the fill cap disintegrated. The metal frame it ran on so rusted it couldn't ride it anyways. Why the tank doesn't have holes in it. Must be the crud lining it.
Eased Tecumseh carb apart ; and oh my.
Getting the float released from the crud welding it to the body and having the carb in two pieces without a pile of broken parts felt like a major accomplishment.
Extracted a couple grams of varied crud before using the last 1/3 can of carb cleaner.
Added a slight dent to top of float adjusting the tab the umpteenth time to set it level.
Put it on the motor and surprise , it raced. I'm still laughing about it at times.
I haven't frogged with it at low idle. Air cooled but it has an exhaust cooling pipe for when underway so I shut it down. It seemed alright mid range on the way to stopping it. ( I had dumped my water test tank earlier. It was getting nasty from bugs ect.).