Small yard, no need for a rider/tractor.
When we moved in to our house, it came with a Craftsman front drive walk-behind, that had the cover off of the drive mechanism, probably so he could more easily spray belt dressing on the belt (as opposed to changing the worn out belt). The spark plug was probably original, I'm sure the oil was.
I had previously owned a really nice self propelled Honda, but had given it to my practice manager when she bought her first house (we had been in rentals for 5 years, someone needed to be using it).
After the Honda, it really sucked to go through the first year with that Craftsman. In the summer here the grass grows so fast that after more than 5 days, I would have to limit myself to 1/3 of the uncut section on each pass. Cured the hard-start with an air cleaner and spark plug at least.
The second year, I spotted a Husqvarna rear drive in clearance at the Lowe's, and while it doesn't compare to the Honda, the BS motor started every time, and it got the job done. Then my wife tried to mow the cast iron pipe next to the fire hydrant, and bent the crank.
I wasn't really ready to pay $700 for another Honda, but then one my veterinary assistants said that she had a mower that she didn't use, and I could have it. Same model, exactly, thirty minutes of use. The carb was gummed up from sitting for a few years with ethanol. Swapped the carb, back in business with a parts mower to boot.
The teenage son finally got old enough to take over the mowing, and now I don't have to listen to my wife complain how much she misses the Honda.