The Hunter MPTOOL is a compact adjustment key for MP Rotator nozzles, designed to quickly change spray arc and reduce radius for precise irrigation coverage. Arc adjustment: Rotate the Arc Adjustment Ring clockwise to increase arc and counterclockwise to decrease it while the nozzle is operating in the pop-up position. Radius control: Turn the Radius Adjustment Screw clockwise (4 full turns) to decrease radius or counterclockwise (4 full turns) to increase radius; up to 25% reduction is possible. Slip-clutch protection: Built-in slip clutch prevents over-reduction and protects the nozzle from damage during adjustment. Simple compatibility: Works with all MP Rotator nozzle models; can also be used in place of a small flat-head screwdriver for adjustments. Field-ready design: Lightweight, hand-held tool that makes zone tuning faster and keeps irrigation uniform and efficient. Use the MPTOOL as part of routine system tuning: adjust all rotators on a zone for consistent precipitation rates, set proper run times, and avoid sustained pressures above 55 PSI to preserve nozzle life.
