Gecko M-Class Spa Replacement Control [3 Pump] [4.0kW] (3-74-7036) circuitboards A spring is one of

A spring is one of the internal parts that helps a dial valve feel responsive and mechanically complete

That keeps the repair efficient while restoring cleaner control behavior and internal function

Grid pack for compatible Sta-Rite S7D75 37 square foot systems

and more efficient maintenance

Gecko M-Class Spa Replacement Control [3 Pump] [4.0kW] (3-74-7036) circuitboards A spring is one ofA replacement spa control helps restore coordinated equipment management in a compatible M Class setup, and this Gecko version is designed for 3 pump applications with a 4. 0kW heater using the 3 74 7036 reference. When a main control pack becomes unreliable, the spa can lose synchronized management across pumps, heating, and related features. The 3 pump design gives this unit practical value because replacement control packs work best when they match