I expect I'm not the only one. It seems that most 'normal people' buy new, or nice used lawn mowing equipment, then use it until it needs a repair and then buy new again. I'm the guy that can't walk past a pile of broken junk without saying to myself, "I can take parts from all those and make a good one." Last year I bought a couple beaters for under $100 each and both could be coaxed into mowing part of the yard. This year the two are becoming one.
The Montgomery Ward Signature 2000 mower is probably a 1993 model. I bought it from a Facebook ad. When I got to the seller's place it was an old mobile home that had been enlarged with 2x4s and plastic sheeting to double the living space. It had the kind of yard sale that looks like it is always in business. I approached the two middle aged women that were watching over the stuff and mentioned that I was there for the mower. They spoke to each other in Spanish then called Maria over. Maria looked to be about 10 years old, but had the demeanor of a sharp used car salesman. The mower was rough looking with two flat tires and no battery, but started right up when I jumped it. I haggled with Maria for a moment and got the mower for $75. She took the money and pocketed it. Her 6 year old brother helped me load it on the trailer.
The Craftsman mower was also a Facebook purchase. It had been abandoned by a tenant who had suddenly departed, owing a couple months rent. The seller was just asking $50 with two flat tires and no idea if it ran.
Both mowers wintered outside with no attempt to prepare them for storage. My plan was to just buy another used one this season, but I walked past the pile of junk and said to myself, "I can take parts from those and make a good one." The Signature 2000 is in better shape, but needed parts. Both have B&S 18 HP twins, so I traded the starter between them. It ran poorly, but good enough that I bought some newer tires off eBay and ordered new spindles for the deck from Amazon. I have the seat from the Craftsman rigged to fit, but just finished re-upholstering the original seat.
Over the weekend I installed the new spindles and thought I'd mow. The Signature 2000 looked ready, but died out after running for a moment. Air, Fuel, Spark.... It seemed to be a carburetor problem - the cylinders were filling with gas, making it hard to crank. I swapped carbs from the Craftsman. Somewhere along the process I noticed that the gas tank had gone from 3/4 full to about 1/3. Wow, I didn't think I had it running that long? Finally back together, still not running right. It seems rich and dies after a minute. Will not start with any choke applied. Eventually it was beer:30 and time for the mower to rest.
Today, I felt really stupid. All that gas in the cylinders? It had ran past the rings and filled the crankcase, mixing with the oil. When I was trying to run it yesterday, it had been blowing a gas-oil mix out the crankcase vent into the air filter. The oil level was pretty much at the top of the dipstick. Lets just call that a good flush of the engine.... I have done an oil change, drain and another fill. It looks like it's going to run okay. Worst case? I still have the Craftsman engine and I think that just needs a voltage regulator....