Since I can't cut the grass (too wet and it is pouring - again), I just
did a D&C on my little lawn tractor. I haven't done work like this in
years. It was running fine, but who knows what you can bust with
preventive maintenance? :)

Any, after powerwashing under the hood, I

Replaced the two NGK plugs for a $1.50 each

Replaced the Kawasaki air filter elements for $20

Replaced the Kawasaki fuel filter for $5

Replaced the Kawasaki oil filter for $7 (from John Deere, which uses Kaw
engines in some models)

Replaced the three blades on the deck for $12

Greased a few fittings

Pulled and cleaned the carb, found a piece of grass near the jet

Put in a quart of fresh oil

Used a couple of dabs of dielectric grease

Amazingly, after five years of hard use, the drive and deck belts were
in fine shape, visibly

Reassembled, no parts left over. Starts, runs. Amazing.

I do need a new battery.

I mention this because, believe it or not, you used to be able to work
on outboard motors this casually, without a great deal of
engine/electronic knowledge, and with simple tools. Those were the days.