A separate question has to do with the PARKING BRAKE.  The beeper stays on while I'm mowing.  I figure it's a cable adjustment.  I'm on pp 14-5 in the Manual.  Maybe it's the PARKING BRAKE SWITCH.  After all, this puppy was bought new back in '91 and I have my fair share of aches and pains at my age.  How should I approach this issue?