Had a Marvel that sat untouched outside for 35+ documented years.
For all intentional purposes it should have gone on the scrap pile. (actually it was on a scrap pile when I got it)
Could not even get 1 screw to turn, broke 2 trying.
Put it in a big pot outside on a hotplate and cooked at a slow boil for an hour in a water and rad cleaning solution (oxalic acid)
Pulled it out and rinsed it in a baking soda and water bath to neutralize the acid then rinsed in clean water.
It cleaned up great, all the screws came out like they were put in yesterday.
The two I broke the heads off of unscrewed with a pair of pliers and no effort.
I was dealing with brass, steel and aluminum and contrary to what others say there was no problem with the solution eating anything away, granted this carb was built well to begin with.
Proceed at your own risk, just sharing what worked for me.
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Today's Featured Article - Picking Corn - by Rick Nikolich. It was the day before Christmas shutdown at work and I asked our lead engineering expert Scott Andrzejewski what he was going to do over the holidays. He said that he had some corn that he still needed to pick with an antique one-row New Idea corn picker. Scott has a nice farm about an hour north of Lansing in St. Johns, MI. He wanted to get the rest of his corn in by the next day (Christmas Eve). We had about an inch of new snow on the ground and single digit temperatures. So in the bac
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