Service Bulletin

Improper seat and switch operation could cause unsafe conditions which may
prevent your machine from operating correctly, or could prevent your equipment
operator from being protected by that system/function. The safety interlock
system is used on most machines to prevent personal injury due to unintentional
operation when an operator leaves the seat. When a seat is vacant, the engine
should stop if the traction pedal or implement control is engaged. The system
also prevents the engine from starting unless the traction pedal is in neutral and
implement controls are disengaged. On some units, the safety interlock system
also prevents the machine from moving unless the parking brake is off, and the
operator is seated. The seat and safety switch should be checked for proper
operation on a daily basis. Refer to the following pages for illustrations and
preventive maintenance services and suggestions.
The following is a list of conditions that could cause the seat or its safety switch
to malfunction:
• Seat adjustment lever inoperable.
• Seat slides dirty or not lubricated.
• Debris under and around seat.
• Seat components (e.g. frame, arm rest, etc.) damaged, loose, or broken.
• Wiring or switch damage, disconnected wires, misadjusted switch, or
“jumped” circuitry.
• Broken or worn rivets/fasteners.
If safety interlock switches are disconnected or damaged the machine could
operate unexpectedly causing personal injury. If the interlock system is not
working properly, Do Not Operate the unit until it is properly repaired. Check
your operator’s manual for proper operating procedures for your specific
equipment. Contact your Toro distributor for assistance as necessary to assure
correct operation of the seat and its safety interlock system.
Cleaning Seat Slide
When cleaning machinery, the seat slide areas often get overlooked. When dirt
and debris get in the slide areas, they can cause binding or poor operation of the
seat slide. The arrows below point to slide adjustment areas, these areas should
be inspected daily, cleaned, and lubricated on a regular basis to insure proper
operation of the seat adjustment.
Seat Slides