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2. Connect POL fitting on hose/regulator assembly to propane tank(s). Turn POL fitting counterclockwise into threads on tank. Tighten firmly using 7/8" wrench. IMPORTANT:Tighten regulator with vent pointing down. Pointing vent down protects regulator from weather damage. Supply Valve Propane Tank POL Fitting Hose Regulator Vent (pointing down) Figure 2 - Regulator With Vent Pointing Down 3. Connect hose to the inlet connector. Tighten firmly using 9/16" wrench. IMPORTANT:Use extra hose or piping