Probably - most ride ons are 12v the same as cars. Just check it is not an older 6v battery first - pull it out and read the label. If it is 12v, connect those leads and fire it up!
yes.
NO You have to many AMPS from a car, you can jump start it butdon't charge it.
i dont see why not.
a rider will or an electric start will.
yes as long as it is a 12volt battery - i have done it many times.
Yes. Just make sure to use a battery of the same voltage.
No for your lawn mower you will just need regular lawn mower oil.
Magnetos
probably
the magneto
Zero turn lawn mowers can be either a riding lawn mower or a push lawn mower, depending on you're preference. Push lawn mowers start around three hundred dollars.
replace it