Hunter 172000 PGP Rotor Adjustment Tool Brand: Hunter Industries | SKU: 172000 Product Overview The Hunter 172000 rotor adjustment tool, commonly called the Hunter wrench or PGP adjustment key, is used to make field adjustments on compatible Hunter gear-driven sprinkler rotors. Its compact two-ended design supports common setup and maintenance tasks without requiring the sprinkler to be removed from the system. Installers, maintenance teams, and property owners can use the tool to adjust the watering arc and turn the radius-reduction screw on supported rotor models. It is useful during initial installation, after landscape changes, and when seasonal inspection shows overspray, dry areas, or a pattern that no longer follows the intended boundary. Adjustment procedures vary by rotor family. Confirm the exact sprinkler model and follow the current Hunter instructions before turning either adjustment point. The 172000 tool does not include replacement nozzles and is not intended to remove or repair internal gear-drive components. Key Features: Genuine Hunter rotor adjustment tool Supports arc adjustment on compatible Hunter rotors Turns the radius-reduction screw on supported models Compact size for irrigation tool bags and service vehicles Useful for installation, inspection, and seasonal maintenance Common Uses: Adjusting part-circle rotor coverage Reducing or fine-tuning the watering radius Correcting overspray near pavement, walls, or property lines Servicing residential and commercial rotor zones Technical Specifications: Shopify SKU / manufacturer part number: 172000 Accessory type: Rotor adjustment tool Adjustment functions: Arc and radius on compatible models Replacement nozzles included: No Rotor included: No Compatibility and Use Notes: Use only with compatible Hunter adjustable rotors. Compatibility and the correct adjustment procedure depend on the rotor model. Do not force an adjustment beyond the sprinkler’s designed range. Operate the irrigation zone when the applicable Hunter procedure requires live pattern observation. FAQ Does the Hunter 172000 tool adjust both arc and radius? Yes, on compatible Hunter rotor models it supports common arc and radius-adjustment functions. Does it include replacement nozzles? No. This listing is for the adjustment tool only. Will it fit every Hunter sprinkler? No. Confirm the exact rotor model and its adjustment instructions before use. Why Buy the Hunter 172000 From Big Frog Supply? Big Frog Supply identifies the exact tool SKU, supported adjustment functions, package contents, and compatibility limitation so customers can order the correct service tool without mistaking it for a nozzle kit or universal sprinkler wrench.