Small Engines (Lawn Mowers, etc.): Craftsman Riding Mower Not Starting, craftsman riding mower, battery cables

Question
Last year my Mother-in-Law gave us her Craftsman Riding Mower (Model # 536.270112) which she had bought used and couldn't use since her yard was too small.

It worked great last year.

This year, when I first went to use it, I could not get it to start.  My first thought was the battery was dead, but we proved beyond doubt it is fully charged and ready to go.

When I turn the key in the ignition, I get nothing.

As it was a used purchase, it did not come with an owners manual.  The data sheet on the mower shows it was built in 1989.  She had it serviced by a local lawn-mower person the first year after she owned it.

Any thoughts?

Answer
Hiya Bruce- first, do the headlights work?  If no- then check the battery cables.  If yes- then look at the safety start switch for the clutch/brake unde the motor.  A large paperclip will jump out the switch for a test.  Theres also a switch under the seat (it is a frequent troublespot).  Lemme know what you find!