The Stanley pump sprayer is sold through the Stanley Black & Decker Division, and is licensed for production through Chapin Manufacturing International Inc. The Stanley pump sprayer is a convenient and comfortable backpack sprayer, useful for delivering liquid treatments of herbicides, pesticides, fertilizers and more. With a 4 gallon capacity, the sprayer allows for extended applications without refilling. The hose attachment accepts several different nozzles so spraying patterns may be wide or narrow, and the rate of flow can be adjusted to anything from a light mist all the way to a stream.
Inspect the sprayer before filling it with solution. Make sure the hose is tightly attached to the spray wand; tighten the spray wand hose nut finger tight as necessary. Check to make sure the hose is securely attached to the main tank, and tighten the hose clamp if necessary using a slotted screwdriver.
Attach the shoulder straps on both sides of the tank by snapping each strap to the base of the unit. Adjust the straps by pulling up on the strapping material to tighten, or releasing the strapping material to loosen.
Adjust the pressure regulator before filling the tank with solution. This regulator controls the pressure of the solution coming from the spray nozzle. Remove the tank cap from the unit by twisting it counterclockwise. Remove the filter basket that resides below the tank cap. Look into the top of the tank to view the pressure regulator. You will see four fingers on the regulator knob as well as an alignment pin. When a finger is directly aligned with an alignment pin, that is the pressure the tank is set to operate with. Finger 1 regulates fluid pressure to 30 psi (pounds per square inch), fingers 2, 3 and 4 regulate the tanks pressure to 45, 60 and 80 psi respectively. Twist the regulator knob to attain the pressure setting you desire. Higher pressure means more fluid dispensed per minute.
Replace the tank filter basket. Add the spray solution you wish to use into the tank. Pour it through the filter basket to strain the solution, in order to prevent debris from entering the tank. If you wish to use a diluted solution, add the appropriate amount of water after first adding the undiluted solution. There are gradient lines on the outside of the tank to assist in specific mixing ratios desired. Stir the solution if it does not readily mix; remove the filter basket and stir the solution with a paint stick. Replace the filter basket, then replace the tank cap. Tighten the tank cap securely by twisting it clockwise.
Strap the backpack onto your back, then pull the adjustment straps so that it fits tight, yet comfortably. Hold the sprayer nozzle in your hand and pump the hand-held pump lever rapidly to build pressure within the tank. Repeated strokes are required to build initial tank pressure, but are required less frequently as fluid is dispensed.
Pump the lever several more times to prime it fully. When you feel resistance, the sprayer is ready. Aim the spray nozzle in the proper direction and depress the spray handle. As fluid is released, continue to pump the lever occasionally to maintain a consistent pressure and steady flow.
Empty the contents of the tank before adding a different formula. Remove the cap and filter basket from the tank. Upend the tank, allowing contents to flow out of the opening. Rinse the tank with fresh water and add the new formula. When you are finished spraying, empty the contents of the tank, then release all the pressure from the hose and tank by depressing the spray handle momentarily.