Thanks, guys.
It is an older machine. The solenoid is located beside the battery, under the seat with a plate between the battery and solenoid. Getting to it is a nightmare. The mower was in the repair shop because (this is what the repair shop said, not me) the blade belt broke and bent the PTO lever so that it would not contact the switch. All was well before the brake. After I replaced the belt, the mower would not crank. It was sent to shop for repair. Mower ran great for a couple weeks after returning from shop, then suddenly would not crank. Do not know if solenoid clicked prior as when key was turned, mower cranked immediately. I can see the solenoid but getting to it, nightmare.