On my L3240, the throttle works with the cruise control. Generally I use cruise while bush-hogging, so I set the throttle around 540 PTO RPM, and use the cruise for my ground speed. I also use the cruise to creep while blading the driveway. I have not found any connection between the HST pedal and the cruise lever. The cruise allows me to keep implements spinning at rated speed (540) and yet still creep over the ground. I use cruise a lot.