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OPERATOR’S MANUAL

MS-4 BACKPACK SPRAYER

Thank you for choosing the ECHO Backpack Sprayer. This sprayer is powered by retained air pressure and is 

made of materials highly resistant to corrosion and commonly used chemicals. The ECHO Backpack Sprayer 

is easy to maintain, easy to repair. No special tools are required. These and other features make this sprayer 

very functional, lightweight and economical.

RULES FOR SAFE OPERATION

Read and understand this entire manual before using the sprayer to avoid potentially serious situation.
•  Always inspect your sprayer thoroughly before and after each use. Check to be sure hose is securely at-

tached and in good condition before pressurizing tank.

•  Use special care when spraying near electrical installations.
•  Keep the work area clear of people and animals.
•  Never use the sprayer during windy conditions.
•  Always wear goggles when filling, using or cleaning the sprayer.
•  Always wear a mask or respirator when filling, using and cleaning sprayer if recommended by the spray 

material manufacturer.

•  Wear protective gear and clothing when filling, using and cleaning the sprayer.
•  Always release pressure in the pump prior to filling, cleaning or servicing the sprayer.
•  Before opening a container of pesticide or other spray material carefully read, understand and follow all 

instructions on the label.

•  Do not use flamables in the sprayer. They can ignite or explode, causing serious injury.
•  Never use caustic or corrosive materials in sprayer, which could result in damage to unit.
•  In case of personal contamination, remove contaminated clothing, remain upright, do not consume liquids 

or cause vomiting, get professional help immediately.

•  Never attempt to pressurize unit by any other method than with the pump module provided. Never over 

pressurize unit.

•  Do not eat, drink or smoke while spraying.
•  Wash face and hands with soap and water after spraying.
•  Clean and rinse tank and spraying assembly after each use to prevent crystallization, which would later 

cause clogging and chemical damage to the unit.

•  Do not store sprayer under pressure or with spray solution in tank.
•  Do not transfer spray materials to other containers, especially food and/or drink containers.
•  Keep spray materials locked up and out of reach of children and animals.
•  Use only original manufacture’s replacement parts.

Summary of Contents for MS-4

Page 1: ...tive gear and clothing when filling using and cleaning the sprayer Always release pressure in the pump prior to filling cleaning or servicing the sprayer Before opening a container of pesticide or other spray material carefully read understand and follow all instructions on the label Do not use flamables in the sprayer They can ignite or explode causing serious injury Never use caustic or corrosiv...

Page 2: ...de backrest toward you metal stand to the right 2 Set flat washer A on handle shaft sleeve and insert handle shaft B 3 Pull pump actuator lever C away from pump backrest 4 Turn sprayer so metal stand is up 2 lockwashers 1 adjustable brass nozzle 1 110 blue plastic nozzle 1 brown plastic wide fan nozzle 1 wrench A B C ...

Page 3: ...n water 2 Leaving approximately 1 2 gallon of fresh water in tank pressurize and flush pumping system by depressing trigger at least 2 minutes then drain all remaining water 3 Always store tank clean and empty in a dry I shaded location 4 Place sprayer on back and pressurize tank by pumping approximately 5 to 11 times 5 You will need to pump occasionally to maintain the desired spraying pressure 6...

Page 4: ...estions concerning the application operation or maintenance of this product you may call the ECHO Consumer Product Support Department at 1 800 673 1558 from 8 30 am to 4 30 pm Central Standard Time Monday through Friday Before calling please know the model and serial number of your unit to help your Consumer Product Support Representative ...

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