Hayward Max-Flo II Pump Diagram The Hayward Max-Flo II� is a series of high technology self-priming pumps that combines performance, dependability and value with durable corrosion-proof construction. Designed for pools of all types and sizes, Max-Flo II features a Tri-Lock cam and ramp strainer cover with a extra leaf-holding capacity strainer basket. Max-Flo II also features 2-inch threaded ports, a heavy-duty motor designed to operate in environments up to 122 degrees F, an elevated base for improved motor cooling and to prevent flooding. The Max-Flo II is an ideal choice for both new construction or as a replacement pump. Self-priming. Tri-Lock cam and ramp strainer cover are designed to seal with less than quarter turn. Clear strainer cover lets you see when the basket needs cleaning. Pressure testable to 50 psi MAXIMUM. Large leaf holding capacity strainer basket extends time between cleanings. Heavy-duty, high performance motor is designed to operate in environments up to 122� F. Elevated base insures better air circulation for cooler running and prevents flooding. All components molded of corrosion-proof reinforced engineered plastic for extra durability and long life. Service-Ease Design provides easy access to all internal components by just removing 4 bolts.