A few years-ago I bought a Harbor Freight motorcycle ******** craigslist. Given the shape it was in and etc, though it worked, it didn't leak, and wasn't visibly 'tweaked' out-of shape, I think I got them to get rid of it for $25. They didn't want it, I was willing to give 'em that-much, and give it a place of storage. After that I bought a Handy-Lift, so I didn't really have a burning use for it. It sat there, waiting to be used. It appeared that it had been stored outside much of its life, the paint was Florida-sun-faded to pink from the HFT red. In COVID-lockdown, I decided to do-something about it.
I disassembled it, and used a 'mule-skinner' heavy twisted-wire cup on a DeWalt side-grinder to get-rid of the rust, most of-which turned out to be surface rust. Smaller parts were bead-blasted, I'd just finished refurbishing my free Harbor Freight benchtop blasting cabinet, which works great, using glass beads. I did all the nuts, bolts and miscellaneous small parts. I wasn't going for a spray-gun finish, I used an oil-based paint from Ace Hardware that I already had. It got brushed-on. The wheels and the foot pedal pump for the 4 ton bottle jack it uses, were given a rattle-can black, two coats.
It went back together, I used flat washers where the OEM split washers would have torn-up my new paint, so the split-washers bear-upon the flat washers.
Harbor Freight has black rubber glue-backed diamond-plate treads I used to cut-to-size for the bike-lifting saddle. I tried to pop-rivet them on, but with the jack assembled, it seemed the bottom of the pop-rivet interfered with the full lowering of the mechanism. I drilled out the pop-rivets and took a pop-rivet, removed the frangible nail/stud leaving the pop-rivet. I cut a slot in the rivet tube with a Dremel cut-off disc, and the I flattened the split-side with a circular flat punch, after inserting the rivet into the rubber tread and the steel saddle it sat-upon.
It was somewhat labor-intensive, but about the only thing I spent any $ on were the rubber diamond-plate patter treads. The paint, the fasteners, the surface prep pieces, all were things I already had on-hand. A good COVID-era project, cheap to-do, and the jack functions perfectly, and has a better appearance.