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Backpack Backpack Sprayer Sprayer Use and Care Manual Use and Care Manual Model MS-41BP 4G/ 15L WARNING Carefully Read These Instructions Before Use 013529 R0514...
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WARNING WARNING: Improper use or failure to follow instructions can result in explosive failure causing serious eye or other injury. For safe use of this product you must read and follow all instructions. Do not leave a pressurized sprayer in the hot sun. Heat can cause pressure build-up resulting in possible explosion.
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APPLICATIONS & USE FOR YOUR SPRAYER Avoid using a sprayer for general cleaning purposes if plant protection or herbicide chemicals have already been used in the sprayer. If a sprayer has been used for plant protection or as an herbicide, clean the sprayer completely (see cleaning section) before using.
SPRAYER COMPONENTS & USE INFORMATION, Continued WAND ASSEMBLY 1. Make sure the o-ring is installed on the end of the wand. Insert the wand into shut-off valve. 2. Turn and tighten the retaining nut clock-wise onto the shut-off valve. O-ring Retaining Nut Shut-off Wand...
STOWAWAY PUMP HANDLE into Rotate Pull slot 180º INSTALLING THE SHOULDER STRAP The top of the shoulder straps are attached to the tank. Attach the lower end of the straps by clipping the strap hooks to the metal frame between where the frame exits the tank and curves around.
SPRAYER COMPONENTS & USE INFORMATION, Continued 3 STAGE FILTERING SYSTEM This backpack sprayer is equipped with a 3 stage filtering system (see figure Stage 1 Figure 1 (Filter 1). Stage 1 is a filter basket incorporated into the tank opening where fluid is basket) added.
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SPRAYER COMPONENTS & USE INFORMATION, Continued HELPFUL SPRAYING INFORMATION Use RAPID pump strokes to prime the pump. You will know the pressure chamber is filling with liquid when you feel firm resistance from the pump. The air in the pressure chamber is compressed from repeated strokes.
STORING / MAINTAINING YOUR SPRAYER • The sprayer should be stored out of direct sunlight in a cool dry space. • Before freezing weather make sure to drain all liquid in the tank, pump, pressure cylinder, hose, shut-off valve, wand and nozzle, to avoid liquid expansion and cracking in the sprayer components (See “Cleaning”...
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DISASSEMBLING AND REPAIRING THE PISTON PUMP 1) Remove the cotter pin and pump handle. With the pump facing towards you lay the unit on its back (Figure 1). Loosen the hose clamp and remove the sprayer hose. Caution: There could be residual liquid in the hose and pressure cylinder.
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7) Apply Petroleum jelly to the inside of the piston cylinder wall and on the collar, and reinstall the piston assembly into the piston cylinder. Figure 7 8) Insert the piston at an angle with the leading edge of the collar placed over the slot in the piston cylinder.
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8. The pressure chamber o-ring can also be replaced. DO NOT stretch Tank tab the o-ring over the bottom flange. Assemble the o-ring over the top of the chamber. Apply petroleum jelly to the o-ring before reinstalling pump asembly into the tank (fig. 3b). 9.
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