Husqvarna OEM part 5391010-80 on ride-on mowers. The safety interlock switch is a vital component that ensures the engine will only start or continue running when safety conditions are met (e.g., brake engaged, operator presence detected).
Built to OEM specifications, this replacement switch delivers reliable performance and long service life.
OEM Part:
• Husqvarna: 5391010-80
Fits:
• Selected Husqvarna ride-on mower models that use part 5391010-80 (check your model’s parts list/diagram before ordering)
Function:
• Safety interlock — prevents engine start/run when conditions are unsafe
• Ensures operator and machine safety