Back Pack Sprayer
Operator's Manual
MODELS MS - 40
MS - 50
99922202847
10/01
WARNING DANGER
Read rules for safe operation and all instructions carefully. ECHO provides this
Operator's Manual which must be read and understood for proper and safe operation.
2
TABLE OF CONTENTS
Introduction .......................................................................................................................................2
- The Operator's Manual ...............................................................................................................2
Operator Safety ..................................................................................................................................3
Specifications..................................................................................................................................... 4
Contents ............................................................................................................................................4
Assembly ........................................................................................................................................... 5
Pre-Operation .....................................................................................................................................6
Maintenance, Storage ........................................................................................................................6
Troubleshooting ................................................................................................................................7
Servicing Information.........................................................................................................................8
- Parts............................................................................................................................................8
- Service ........................................................................................................................................8
- ECHO Consumer Product Support.............................................................................................. 8
- Warranty Card ............................................................................................................................ 8
- Additional or Replacement Manuals ..........................................................................................8
Specifications, descriptions and illustrative material in this literature are as accurate as known at the time of publication,
but are subject to change without notice. Illustrations may include optional equipment and accessories, and may not
include all standard equipment.
INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job
dependability. Read and understand this manual. You will find it easy to use and full of helpful operating tips and
SAFETY messages.
THE OPERATOR'S MANUAL
Contains specifications and information for safety, assembly, operation,
maintenance, storage, troubleshooting, and service specific to this
product.
Copyright© 2001 By Echo, Incorporated
All Rights Reserved.
3
MS-40/MS-50 BACKPACK SPRAYER
OPERATOR'S MANUAL
WARNING DANGER
• Carefully read and understand the Operator’s
Manual supplied with this unit prior to filling
using, and/or cleaning this sprayer .
• DO NOT use flammables in the sprayer. They can
ignite or explode causing serious injury .
• Always wear splash goggles and protective gear
and clothing when filling, using and/or cleaning
the sprayer.
• Oil the rubber cap gasket prior to first usage so
the gasket will seal properly.
• Tighten all connections before using the sprayer.
Some may not be properly secured and must be
tightened to prevent leakage.
WARNING DANGER
BEFORE USING: Oil cap gasket, oil check valve,
and maintain breather hole clear of debris.
Your failure to oil and to clean check valve, and to
maintain breather hole open to allow air into tank,
can cause tank to collapse and crack due to vacuum
created by the pump.
Read and understand this entire manual before using the sprayer, to avoid a potentially serious situation.
• Always inspect your sprayer thoroughly before and after each use. Check to be sure hose is securely attached and in
good condition before pressurizing the tank.
• Do not spray on or 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 and 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 flammable materials in the sprayer; they can ignite and/or explode, causing serious injury .
• Never use caustic or corrosive materials in the sprayer, which could result in damage to the unit.
• In case of personal contamination: remove contaminated clothing, remain upright, do not consume liquids or cause
vomiting, and get professional help immediately.
• Never attempt to pressurize the unit by any other method than with the pump module provided. Never over-pressurize
the 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 crystallizing, 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 manufacturer’s replacement parts.
OPERATOR SAFETY
4
SPECIFICATIONS
MODEL
MS-40
MS-50
SPRAYER TYPE
Back pack
Back pack
TANK CAPACITY
4
5.4
WEIGHT
1 0 .6 lb s .
1 2 .2 lb s .
SEALS
S p e c ia l V i to n
S p e c ia l V i to n
TAN K M O U T H
6"
6"
PUMP TYPE
Internal Piston
Internal Piston
PRESSURE CHAMBER
CAPACITY
25.4 oz.
27.4 oz.
WAND TYPE
16" Brass
20" Brass
FLOW C APACITY AT NOZZLE
0.49 GPM
0.49 GPM
STANDARD NOZZLE
Fan
Fan
PRESSURE RATING
15 TO 168 PSI
15 to 168 PS I
RECOMMENDED APPLICATIONS
CHLORINE BASE
XXF E R TILIZ E R S
XXHER B IC ID ES
XXIN SE C T IC ID E S
XXPESTICIDES
XXOIL-BASED SPRAY
XXSOLVENT-BASED SPRAY
XXSTAINS/SEALERS
XXDISSOLVABLE POWDERS
X
X
CONTENTS
_____ Pump Handle and Pump Lever
_____ Tank Assembly
_____ Spray Wand
_____ Parts bag (includes: snap pins and washers)
_____ Operator’s Manual
_____ Echo Limited Warranty and Warranty Registration forms
5
MS-40/MS-50 BACKPACK SPRAYER
OPERATOR'S MANUAL
ASSEMBLY AND MAINTENANCE
1 . Remove all contents from box.
IMPORTANT
Lubricate felt washer assembly, gasket inside cap, and check valve
before initial use, and after each use.
2 . Unscrew tank cap and remove strainer. Apply a coating of 5 or 10
weight oil to the tank cap O-ring and check valve.
3 . With tank cap removed, disconnect the agitator (F) from the pump
module (D) inside the tank.
4 . Unscrew pump module cap (A) from the top of the tank.
5 . Lift pump module/cap out of tank.
6 . Slide cap off pump assembly. - Fig. 1
7 . Remove felt washer (B) from cap, and liberally oil by dipping in 5
or 10 weight oil. - Fig. 1
8 . Reassemble felt washer to inside of cap, and reinstall on tank.
When first contact of felt is made with tank lip, tighten one
additional half turn. Do not completely tighten at this time.
9 . Install pump module into tank through pump module cap assem-
bly, and tighten cap securely.
10. Snap agitator into pump module groove, with paddle up.
11. Locate the pump lever (C) - Fig. 2 There are two (2) bends on one
end of the pump lever. This end is installed on the pump module.
- Fig. 3
1 2. Place one small washer on pump lever before installing on pump
module.
13. Insert pump lever through opening on top of pump module.
14. Place second small washer on pump lever and secure lever
assembly with snap pin.
15. Insert pump handle through hole at base of the sprayer on pump
module side. Before installing handle completely, insert pump
lever (C) into bracket on pump handle (E). - Fig. 4
16. Insert pump handle completely. Install small washer and snap pin
to secure pump handle to pump lever.
17. Install large washer and snap pin to secure the pump handle at the
base. (The pump handle assembly is now complete.)
18. Hook the plastic clips attached to the shoulder straps into the
openings at the base of the unit.
19. Attach spray wand to spray gun and firmly tighten.
B
A
C
D
E
F
C
Fig. 1
Fig. 2
Fig. 3
Fig. 4
EC
6
PRE-OPERATION
IMPORTANT
Before using, oil cap gasket, felt pump washer, and check valve, and maintain breather hole clear of
debris. Your failure to oil, clean check valve, and maintain breather hole open to allow air into
the tank, can cause the tank to collapse and crack, due to vacuum created by pump.
1 . Remove cap.
2 . Mix solution in a separate container, following the manufacturers’ directions.
3 . Pour pre-mixed solution through strainer into tank. Reinstall cap tightly.
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 . Always oil the gasket on the cap of the unit, as well as the check valve. This will extend the life of the seal and is
important for obtaining a proper seal with no leaks.
7. A unit that has been used with herbicides should never be used to spray insecticides, unless the sprayer has been
properly cleaned and all other chemicals neutralized. Failure to do this could cause you to kill plants that have been
sprayed. Consult with the manufacturer of the chemicals in use to obtain proper instructions.
MAINTENANCE, STORAGE
1 . Remove cap and pour out remaining solution, then rinse all parts thoroughly with clean water.
2 . Add 1/2 gallon of fresh water in tank. Pressurize, and flush pumping system by depressing trigger for at least two
minutes; then drain all remaining water.
3. Always store tank clean and empty in a dry, shaded location.
7
MS-40/MS-50 BACKPACK SPRAYER
OPERATOR'S MANUAL
SOLUTION :
Replace O-rings in spray pistol and on brass spindle
inside the spray gun. If these O-rings have deteriorated, you should also replace all other O-rings and
seals in your sprayer before leaks or other problems
occur.
Unscrew cap on bottom of spray pistol. Push up
brass spindle and replace the O-rings and washer .
1 . Empty sprayer of spraying solution. Unscrew
cap (nut) from the top of pump module and
remove. Turn sprayer upside down in order to
empty pump module. Be careful not to lose the
plastic ball inside the pump module. Once pump
module is empty, place ball back inside pump
module and place siphon tube back in pump
module, tighten cap (nut) with wrench. Make
sure it is very tight. Unit should be ready to
operate.
2. Tighten the nut at the bottom of the pump
module with a small wrench.
3 . If cap is tightened, replace seal and screw P/N
4017000.
4 . If pump module is cracked, replace with spare
parts through your Echo dealer.
Cap may be loose. Oil the gasket (any type of 5 - 10
weight oil); this will stop the passage of fluid.
Pull check valve out. If deteriorated, replace. If not,
clean out. Place small drop of oil and reinstall.
Take a small wire and push it through the vent hole.
This will allow air into the tank and release the
vacuum. Take the cap off, clean vent hole, clean the
check valve, oil valve and re-install.
TROUBLESHOOTING
PROBLEM:
When you squeeze the
trigger on the spray gun, it
sticks and is slow in returning
to the shut off position when
you release the trigger.
The pin in the spray pistol
sticks when pushed. When
you release the trigger, the
pin does not come back up to
shut off the flow.
The sprayer will not pressurize. You pump, but no
pressure is built up, the unit
only sprays when you pump.
Fluid is leaking from cap
where it screws into the tank
and should seal with
the tank.
Unit falls onto its side and
leaks through the center of
the cap where the check
valve is.
Unit works properly, but the
tank starts to collapse. You
can’t unscrew tank cap due
to vacuum.
CAUSE:
The O-rings have been under
chemical attack and have
deteriorated.
The O-rings and washer on
the spindle inside the spray
pistol have deteriorated from
age or chemical attack.
1 . The pump module (tube)
has lost the air pressure
head. All the air has
escaped from the top of
the pump module, due to
improperly tightened
siphon, nut, hose
assembly. The washer
that comes with the
siphon, nut, hose
assembly has deteriorated and is no longer
sealing properly.
2 . Split or cracked pump
module.
Because of capillary action,
fluid is being pulled through
by pressure.
Deteriorated check valve, or
could be dusty or have some
dirt or foreign matter.
The vent hole in the cap has
become clogged with dirt and
is not allowing air into the
tank.
ECHO, INCORPORATED
400 Oakwood Road
Lake Zurich, IL 60047
www.echo-usa.com
SERVICING INFORMA TION
P ARTS
Genuine ECHO Parts and ECHO REPOWER™ Parts and Assemblies for
your ECHO products are available only from an Authorized ECHO
Dealer. When you do need to buy parts, always have the Model
Number of the unit with you. You can find this number on the tank. For
future reference, write the model number in the space provided below.
Model No. ______ ______
SERVICE
Service of this product during the warranty period must be performed
by an Authorized ECHO Service Dealer. For the name and address of
the Authorized ECHO Service Dealer nearest you, ask your retailer or
call: 1-800-432-ECHO (3246). Dealer information is also available on our
Web Site. When presenting your unit for Warranty service/repairs,
proof of purchase is required.
ECHO CONSUMER PRODUCT SUPPORT
If you require assistance or have questions 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.
WARRANTY REGISTRATION
You may register your Echo equipment using the warranty registration
card or register on-line at www.echo-usa.com. Registering provides a
direct link between you and ECHO if we find it necessary to contact
you.
ADDITIONAL OR REPLACEMENT MANUALS
Operator's and Parts Manuals are available by:
• Downloading free from www.echo-usa.com
• Purchasing from your Echo Dealer.
• Sending a check or money order for $2.00 per Parts Catalog or $1.50
per Operator's Manual made payable to ECHO, INCORPORATED.
State on a sheet of paper the model number of the ECHO unit you
have, part number of the manual (if known), your name and address,
and mail to the address below.
Available Parts Catalog
MS-40 Part Number 99922202861
MS-50 Part Number 99922203481
DEALER?
Call
1-800-432-ECHO
or
www.echo-usa.com
CONSUMER PRODUCT
SUPPORT
1-800-673-1558
8:30 - 4:30 Mon - Fri C.S.T.
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